JP4515273B2 - Condensation separation purification agent and purification method of polluted waste water - Google Patents
Condensation separation purification agent and purification method of polluted waste water Download PDFInfo
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- JP4515273B2 JP4515273B2 JP2005020339A JP2005020339A JP4515273B2 JP 4515273 B2 JP4515273 B2 JP 4515273B2 JP 2005020339 A JP2005020339 A JP 2005020339A JP 2005020339 A JP2005020339 A JP 2005020339A JP 4515273 B2 JP4515273 B2 JP 4515273B2
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- 239000002351 wastewater Substances 0.000 title claims description 99
- 238000000746 purification Methods 0.000 title claims description 88
- 238000000926 separation method Methods 0.000 title claims description 68
- 239000003795 chemical substances by application Substances 0.000 title claims description 65
- 238000000034 method Methods 0.000 title claims description 27
- 238000009833 condensation Methods 0.000 title 1
- 230000005494 condensation Effects 0.000 title 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 44
- 239000000843 powder Substances 0.000 claims description 40
- 238000005345 coagulation Methods 0.000 claims description 34
- 230000015271 coagulation Effects 0.000 claims description 34
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 32
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 25
- 239000011707 mineral Substances 0.000 claims description 25
- 235000010755 mineral Nutrition 0.000 claims description 25
- 229920000642 polymer Polymers 0.000 claims description 24
- 235000019738 Limestone Nutrition 0.000 claims description 22
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 22
- 239000004927 clay Substances 0.000 claims description 22
- 239000010440 gypsum Substances 0.000 claims description 22
- 229910052602 gypsum Inorganic materials 0.000 claims description 22
- 239000006028 limestone Substances 0.000 claims description 22
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 21
- RRHXZLALVWBDKH-UHFFFAOYSA-M trimethyl-[2-(2-methylprop-2-enoyloxy)ethyl]azanium;chloride Chemical compound [Cl-].CC(=C)C(=O)OCC[N+](C)(C)C RRHXZLALVWBDKH-UHFFFAOYSA-M 0.000 claims description 21
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 20
- PQUXFUBNSYCQAL-UHFFFAOYSA-N 1-(2,3-difluorophenyl)ethanone Chemical compound CC(=O)C1=CC=CC(F)=C1F PQUXFUBNSYCQAL-UHFFFAOYSA-N 0.000 claims description 18
- 229940047670 sodium acrylate Drugs 0.000 claims description 18
- 239000000377 silicon dioxide Substances 0.000 claims description 16
- 229920001577 copolymer Polymers 0.000 claims description 14
- -1 alkaline earth metal carbonate Chemical class 0.000 claims description 13
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- 229910052570 clay Inorganic materials 0.000 claims description 12
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 9
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 239000011790 ferrous sulphate Substances 0.000 claims description 8
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 8
- 229910001701 hydrotalcite Inorganic materials 0.000 claims description 8
- 229960001545 hydrotalcite Drugs 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 8
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 8
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- WYFUZXBQKVIPQF-UHFFFAOYSA-N (prop-2-enoylamino)methyl propane-1-sulfonate;sodium Chemical compound [Na].CCCS(=O)(=O)OCNC(=O)C=C WYFUZXBQKVIPQF-UHFFFAOYSA-N 0.000 claims description 7
- 229910000288 alkali metal carbonate Inorganic materials 0.000 claims description 7
- 150000008041 alkali metal carbonates Chemical class 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- 230000004931 aggregating effect Effects 0.000 claims description 5
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 4
- 239000000920 calcium hydroxide Substances 0.000 claims description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 4
- 239000011777 magnesium Substances 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000292 calcium oxide Substances 0.000 claims description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 3
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 3
- 239000001095 magnesium carbonate Substances 0.000 claims description 3
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 3
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 3
- 239000000347 magnesium hydroxide Substances 0.000 claims description 3
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 3
- 239000012629 purifying agent Substances 0.000 claims description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims 2
- 239000003513 alkali Substances 0.000 claims 2
- 229910052938 sodium sulfate Inorganic materials 0.000 claims 2
- 235000011152 sodium sulphate Nutrition 0.000 claims 2
- 239000000126 substance Substances 0.000 description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 37
- 239000010802 sludge Substances 0.000 description 22
- 239000000047 product Substances 0.000 description 17
- 238000006243 chemical reaction Methods 0.000 description 16
- 230000006870 function Effects 0.000 description 15
- 230000002776 aggregation Effects 0.000 description 14
- 229910001385 heavy metal Inorganic materials 0.000 description 14
- 239000006228 supernatant Substances 0.000 description 11
- 238000005054 agglomeration Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 10
- 238000005189 flocculation Methods 0.000 description 10
- 230000016615 flocculation Effects 0.000 description 10
- 238000001179 sorption measurement Methods 0.000 description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- 238000010828 elution Methods 0.000 description 8
- 238000004062 sedimentation Methods 0.000 description 7
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 7
- 235000019345 sodium thiosulphate Nutrition 0.000 description 7
- 239000002689 soil Substances 0.000 description 7
- 230000002378 acidificating effect Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000008394 flocculating agent Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000011044 quartzite Substances 0.000 description 6
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 5
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 5
- 230000018044 dehydration Effects 0.000 description 5
- 238000006297 dehydration reaction Methods 0.000 description 5
- 229910052731 fluorine Inorganic materials 0.000 description 5
- 239000011737 fluorine Substances 0.000 description 5
- 229910052736 halogen Inorganic materials 0.000 description 5
- 150000002367 halogens Chemical class 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 230000003472 neutralizing effect Effects 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 238000004220 aggregation Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- 238000006386 neutralization reaction Methods 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 235000019645 odor Nutrition 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 235000011116 calcium hydroxide Nutrition 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010494 dissociation reaction Methods 0.000 description 2
- 230000005593 dissociations Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000000383 hazardous chemical Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 2
- 239000008235 industrial water Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 238000010979 pH adjustment Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000013076 target substance Substances 0.000 description 2
- YLZOPXRUQYQQID-UHFFFAOYSA-N 3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]propan-1-one Chemical compound N1N=NC=2CN(CCC=21)CCC(=O)N1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F YLZOPXRUQYQQID-UHFFFAOYSA-N 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 235000014653 Carica parviflora Nutrition 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 241000243321 Cnidaria Species 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- LISYCWMGWAORRH-UHFFFAOYSA-N [Na].[Th] Chemical compound [Na].[Th] LISYCWMGWAORRH-UHFFFAOYSA-N 0.000 description 1
- 238000005349 anion exchange Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 125000005587 carbonate group Chemical group 0.000 description 1
- 125000005586 carbonic acid group Chemical group 0.000 description 1
- 230000005591 charge neutralization Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 150000001805 chlorine compounds Chemical group 0.000 description 1
- 229910001430 chromium ion Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000007857 degradation product Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- UXYBXUYUKHUNOM-UHFFFAOYSA-M ethyl(trimethyl)azanium;chloride Chemical compound [Cl-].CC[N+](C)(C)C UXYBXUYUKHUNOM-UHFFFAOYSA-M 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 230000001089 mineralizing effect Effects 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000036299 sexual function Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Description
本発明は、汚濁排水の凝集分離浄化剤及び浄化方法に関し、詳しくは、汚濁排水中に溶存している有害物質、特には重金属等第二種特定有害物質による汚濁物質と浮遊懸濁物質（ＳＳ）とを同時に吸着、或いは収着し、凝集分離するとともに、凝集汚泥の性状を変換し重金属類やハロゲン物質等も再溶出することのない極めて安定した固形物として分離することができる凝集分離浄化剤及び浄化方法に関するものである。 The present invention relates to a coagulation separation purification agent and purification method for polluted wastewater, and more specifically, polluted substances and suspended suspended substances (SS) due to hazardous substances dissolved in the polluted wastewater, in particular, heavy metals such as heavy metals. ) Can be adsorbed or sorbed at the same time and agglomerated and separated, and the properties of the agglomerated sludge can be converted and separated as a very stable solid material without re-elution of heavy metals and halogen substances. The present invention relates to agents and purification methods.
従来、無機系・有機系を問わず汚濁排水の処理は、当該汚濁排水に無機系又は有機系の凝集剤を添加し、汚濁排水中の浮遊懸濁物質（ＳＳ）を凝集分離し、所定の水質基準を満たすよう調整（例えば、水素イオン濃度ｐＨ、色度、透視度等）して放流され、分離汚泥は脱水して固形化し、更には必要に応じて重金属類等は別途不溶出化処理等をして廃棄されている。 Conventionally, the treatment of polluted wastewater regardless of whether it is inorganic or organic, an inorganic or organic flocculant is added to the polluted wastewater, and the suspended suspended solids (SS) in the polluted wastewater are coagulated and separated. Adjusted to meet water quality standards (for example, hydrogen ion concentration pH, chromaticity, transparency, etc.) and discharged, separated sludge is dehydrated and solidified, and heavy metals etc. are separately made non-eluting if necessary It has been discarded.
当該汚濁排水処理に使用される従来の凝集剤は分類上無機系と有機系に大別される。無機系凝集剤はアルミニウム塩が主体で汚濁物の分離機能はあるが、有機系に比べ凝集力が弱く形成されるフロックも小さいため沈降性が悪い（遅い）ため浄化処理に長時間かかる。また、当該アルミニウム塩は塩化物や硫酸塩のため水に溶けて酸性を呈するので放水時に中和処理を要する。一方、有機系凝集剤は一般的に電荷を持った鎖状高分子が用いられ、これらは帯電懸濁粒子の電荷中和作用に加えて架橋吸着作用を併せ持つことにより大きなフロックが形成されるが、無機系に比べ処理水及び沈降フロックともに粘性が強く脱水効率が劣り、処理水のｐＨ調整をするために別途調整機器と薬剤費かかる。また、汚濁水の種類によってはフロックが中間点に浮遊して完全に水と分離しない現象が生じ、そのまま放水できない状態になる場合がある。更に使用量が適正値を超えるとフロックが過大となり内部に水分を抱き込むため回収汚泥の含水比も高くなり非効率となる。また、生分解性が低いので環境汚染の恐れも生じる。 Conventional flocculants used in the polluted wastewater treatment are broadly classified into inorganic and organic types. The inorganic coagulant is mainly composed of an aluminum salt and has a function of separating contaminants. However, since the flocs formed are weaker than the organic system and the flocs formed are small, the sedimentation property is poor (slow), and therefore the purification process takes a long time. Moreover, since the said aluminum salt melts | dissolves in water and exhibits acidity because it is a chloride or a sulfate, the neutralization process is required at the time of water discharge. On the other hand, the organic flocculant is generally a chain polymer having a charge, and these have a cross-adsorption action in addition to the charge neutralization action of the charged suspended particles, but a large floc is formed. Compared to inorganic systems, both the treated water and the precipitated floc are strong in viscosity and inferior in dehydration efficiency, and additional adjustment equipment and chemicals are required to adjust the pH of the treated water. In addition, depending on the type of polluted water, a phenomenon may occur in which the flocs float at an intermediate point and are not completely separated from the water, and the water cannot be discharged as it is. Furthermore, if the amount of use exceeds an appropriate value, the floc becomes excessive and water is contained in the interior, so that the water content ratio of the recovered sludge increases and becomes inefficient. Moreover, since biodegradability is low, there is a risk of environmental pollution.
当該汚濁廃水処理に使用されている従来の凝集剤は、排水中の浮遊懸濁物質（ＳＳ）を有効に凝集させることが主目的となっている。従って、当該汚濁排水中に溶存している金属やハロゲン物質等の一部は、凝集時に浮遊懸濁物質（ＳＳ）に取り込まれた状態で分離沈降するとはいえ水溶性物質を除去するには不十分で、特に法令で非常に厳しい基準値が定められている特定化学物質である重金属やフッ素に関しては不可能というのが現状である。更に従来の凝集剤自体には前記特定化学物質を捕捉固定する機能は備えていないので分離したフロックが廃棄された場合、再溶出して土壌を汚染する大きな要因となる。 The conventional flocculant used for the treatment of the contaminated wastewater has a main purpose of effectively aggregating suspended suspended solids (SS) in the waste water. Therefore, some of the metals and halogen substances dissolved in the polluted wastewater are separated and settled in the state of being incorporated into the suspended suspended solids (SS) at the time of agglomeration. At present, it is not possible for heavy metals and fluorine, which are specific chemical substances that are sufficient, and in particular, very strict standard values are stipulated by laws and regulations. Furthermore, since the conventional flocculant itself does not have a function of capturing and fixing the specific chemical substance, when the separated floc is discarded, it becomes a major factor for re-elution and soiling the soil.
上記現状に鑑み、本出願人はこの課題を解決すべく鋭意検討し、金属類（重金属類を含む）の固定と不溶化及び自然土壌に近似した土質への変換を目的とした特許文献１に係る無機系泥質変換凝集剤を開示した。
しかしながら、この技術も水溶性から不溶性物質への変換機能と、当該不溶性物質を捕捉固定するための凝集力及び形成フロックの大きさ、強靭さの面で十分ではなく、また、フッ素等ハロゲン物質の捕捉固定機能が弱いということで更なる改良が望まれた。
However, this technique is not sufficient in terms of the conversion function from water-soluble to insoluble substances, the cohesive force for capturing and fixing the insoluble substances, the size of flocs formed, and the toughness. Further improvement was desired due to the weak capture and fixation function.
本発明の目的は、広範囲な汚濁排水の浄化に際して、凝集処理時に煩雑なｐＨ調整工程を要さずとも、適正な大きさと強さを持ち且つ短時間で沈降するフロックを形成し、処理水及びフロックともに弱粘性で脱水効率が上がり、更に当該フロックの含水比を下げることで顕著な経済効果をもたらすとともに、併せて環境リスクの低減をも図ることができる汚濁排水の凝集分離浄化剤及び浄化方法を提供することにある。 The purpose of the present invention is to form flocs that have an appropriate size and strength and settle in a short time without requiring a complicated pH adjustment step during agglomeration treatment when purifying a wide range of polluted wastewater. Frozen wastewater agglomerated separation and purification agent and purification method capable of producing a remarkable economic effect by lowering the water content ratio of the flocs with a weak viscosity, and further reducing the environmental risk. Is to provide.
上記の目的を達成するために、請求項１記載の発明に係る汚濁排水の凝集分離浄化剤は、無水石膏を主体とする天然鉱物に対して石灰石、珪石、酸化鉄、粘土からなるクリンカーに石膏を加えた微粉砕物及び微粉硫酸アルミニウムを配合したものから成る主成分１００重量部に対し、必須成分として微粉の２−（メタクリロイルオキシ）−エチルトリメチルアンモニウム＝クロリド重合体及び微粉のアクリルアミド・アクリル酸ナトリウム・アクリロイルアミノメチルプロパンスルホン酸ナトリウム共重合物から成る微粉体０．５〜１５重量部が配合されていることを最も主要な特徴とするものである。
また、請求項２記載の発明に係る汚濁排水の浄化方法は、請求項１記載の発明に係る凝集分離浄化剤を、汚濁排水に添加し、撹拌して汚濁排水の浄化を行うことを特徴とするものである。
In order to achieve the above-mentioned object, the coagulation / separation purification agent for polluted wastewater according to the first aspect of the invention is a gypsum on a clinker made of limestone, quartzite, iron oxide and clay with respect to a natural mineral mainly composed of anhydrous gypsum. To 100 parts by weight of the main component consisting of a finely pulverized product and a mixture of finely divided aluminum sulfate, finely divided 2- (methacryloyloxy) -ethyltrimethylammonium chloride polymer and finely divided acrylamide / acrylic acid as essential components The main feature is that 0.5 to 15 parts by weight of fine powder composed of sodium acryloylaminomethylpropane sodium sulfonate copolymer is blended.
In addition, the method for purifying polluted wastewater according to the invention described in claim 2 is characterized in that the flocculent separation purification agent according to the invention according to claim 1 is added to the polluted wastewater and stirred to purify the polluted wastewater. To do.
更に、請求項３記載の発明に係る汚濁排水の凝集分離浄化剤は、無水石膏を主体とする天然鉱物に対して石灰石、珪石、酸化鉄、粘土からなるクリンカーに石膏を加えた微粉砕物及び微粉硫酸アルミニウムを配合したものから成る主成分１００重量部に対し、必須成分として微粉の２−（メタクリロイルオキシ）−エチルトリメチルアンモニウム＝クロリド重合体及び微粉のアクリルアミド・アクリル酸ナトリウム・アクリロイルアミノメチルプロパンスルホン酸ナトリウム共重合物から成る微粉体０．５〜１５重量部と、アルカリ金属炭酸塩及び／又はアルカリ土類金属の炭酸塩及び／又は水酸化物、酸化物７〜３０重量部とが配合されていることを特徴とするものである。
また、請求項５記載の発明に係る汚濁排水の浄化方法は、請求項３記載の発明に係る凝集分離浄化剤を、汚濁排水に添加し、撹拌して汚濁排水の浄化を行うことを特徴とするものである。
Furthermore, the coagulation separation and purification agent for polluted wastewater according to the invention of claim 3 is a finely pulverized product obtained by adding gypsum to a clinker made of limestone, quartzite, iron oxide, clay with respect to a natural mineral mainly composed of anhydrous gypsum, and For 100 parts by weight of the main component composed of a mixture of finely divided aluminum sulfate, as essential components, fine 2- (methacryloyloxy) -ethyltrimethylammonium chloride polymer and finely divided acrylamide / sodium acrylate / acryloylaminomethylpropanesulfone 0.5 to 15 parts by weight of fine powder made of sodium acid copolymer and 7 to 30 parts by weight of alkali metal carbonate and / or alkaline earth metal carbonate and / or hydroxide, oxide It is characterized by that.
A method for purifying polluted wastewater according to the invention described in claim 5 is characterized in that the flocculant separation purification agent according to the invention according to claim 3 is added to the polluted wastewater and stirred to purify the polluted wastewater. To do.
請求項３記載の発明に係る汚濁排水の凝集分離浄化剤及び請求項５記載の発明に係る汚濁排水の浄化方法において、前記アルカリ金属炭酸塩及び／又はアルカリ土類金属の炭酸塩及び／又は水酸化物、酸化物は、請求項４又は請求項６記載の発明のように、炭酸ナトリウム、炭酸カルシウム、炭酸マグネシウム、水酸化カルシウム、水酸化マグネシウム、酸化カルシウムの群から選ばれる少なくとも１種であることを特徴とするものである。 In the method for aggregating and separating polluted wastewater according to the invention described in claim 3 and the method for purifying the polluted wastewater according to claim 5, the alkali metal carbonate and / or alkaline earth metal carbonate and / or water are used. The oxide is an at least one selected from the group consisting of sodium carbonate, calcium carbonate, magnesium carbonate, calcium hydroxide, magnesium hydroxide, and calcium oxide as in the invention of claim 4 or claim 6. It is characterized by this.
請求項７記載の発明に係る汚濁排水の凝集分離浄化剤は、無水石膏を主体とする天然鉱物に対して石灰石、珪石、酸化鉄、粘土からなるクリンカーに石膏を加えた微粉砕物及び微粉硫酸アルミニウムを配合したものから成る主成分１００重量部に対し、必須成分として微粉の２−（メタクリロイルオキシ）−エチルトリメチルアンモニウム＝クロリド重合体及び微粉のエチルトリメチルアンモニウム＝クロリド重合体及びアクリルアミド・アクリル酸ナトリウム・アクリロイルアミノメチルプロパンスルホン酸ナトリウム共重合物から成る微粉体０．５〜１５重量部と、チオ硫酸ナトリウム及び／又は硫酸第一鉄２〜６０重量部とが配合されていることを特徴とするものである。
また、請求項８記載の発明に係る汚濁排水の浄化方法は、請求項７記載の発明に係る凝集分離浄化剤を、汚濁排水に添加し、撹拌して汚濁排水の浄化を行うことを特徴とするものである。
The flocculation / separation purification agent for polluted waste water according to the invention of claim 7 is a finely pulverized product obtained by adding gypsum to a clinker made of limestone, silica, iron oxide and clay to a natural mineral mainly composed of anhydrous gypsum, and finely divided sulfuric acid. For 100 parts by weight of the main component comprising aluminum, fine 2- (methacryloyloxy) -ethyltrimethylammonium chloride polymer and fine ethyltrimethylammonium chloride polymer and acrylamide / sodium acrylate as essential components -0.5-15 parts by weight of fine powder composed of sodium acryloylaminomethylpropane sulfonate copolymer and 2-60 parts by weight of sodium thiosulfate and / or ferrous sulfate are blended Is.
Moreover, the purification method of the polluted waste water which concerns on invention of Claim 8 is characterized by adding the aggregation isolation | separation purification agent which concerns on invention of Claim 7 to polluted waste water, and purifying polluted waste water by stirring. To do.
請求項９記載の発明に係る汚濁排水の凝集分離浄化剤は、無水石膏を主体とする天然鉱物に対して石灰石、珪石、酸化鉄、粘土からなるクリンカーに石膏を加えた微粉砕物及び微粉硫酸アルミニウムを配合したものから成る主成分１００重量部に対し、必須成分として微粉の２−（メタクリロイルオキシ）−エチルトリメチルアンモニウム＝クロリド重合体及び微粉のアクリルアミド・アクリル酸ナトリウム・アクリロイルアミノメチルプロパンスルホン酸ナトリウム共重合物から成る微粉体０．５〜１５重量部と、合成ハイドロタルサイト５０〜１５００重量部とが配合されていることを特徴とするものである。
また、請求項１１記載の発明に係る汚濁排水の浄化方法は、請求項９記載の発明に係る凝集分離浄化剤を、汚濁排水に添加し、撹拌して汚濁排水の浄化を行うことを特徴とするものである。
The flocculation / separation purification agent for polluted waste water according to the invention of claim 9 is a finely pulverized product obtained by adding gypsum to a clinker made of limestone, quartzite, iron oxide, clay to a natural mineral mainly composed of anhydrous gypsum, and finely divided sulfuric acid. For 100 parts by weight of the main component composed of aluminum, fine 2- (methacryloyloxy) -ethyltrimethylammonium chloride polymer as essential components and fine acrylamide / sodium acrylate / acryloylaminomethylpropane sulfonate sodium It is characterized in that 0.5 to 15 parts by weight of fine powder made of a copolymer and 50 to 1500 parts by weight of synthetic hydrotalcite are blended.
In addition, the method for purifying polluted wastewater according to the invention described in claim 11 is characterized in that the flocculent separation purification agent according to the invention according to claim 9 is added to the polluted wastewater and stirred to purify the polluted wastewater. To do.
請求項９記載の発明に係る汚濁排水の凝集分離浄化剤及び請求項１１記載の発明に係る汚濁排水の浄化方法において、前記合成ハイドロタルサイトは、請求項１０又は請求項１２記載の発明のように、Ｍｇ6Ａｌ2（ＯＨ）16ＣＯ3・４Ｈ2Ｏで示される塩基性炭酸塩であることを特徴とするものである。 In the polluted waste water flocculation / separation purification agent according to claim 9 and the polluted waste water purification method according to claim 11, the synthetic hydrotalcite is as in the invention according to claim 10 or claim 12. Further, it is a basic carbonate represented by Mg 6 Al 2 (OH) 16 CO 3 .4H 2 O.
上述した請求項１記載の発明に係る無水石膏を主体とする天然鉱物に対して石灰石、珪石、酸化鉄、粘土からなるクリンカーに石膏を加えた微粉砕物及び微粉硫酸アルミニウムを配合したものから成る主成分と前記必須成分とを配合した構成からなる汚濁排水の凝集分離浄化剤を使用し、この凝集分離浄化剤を請求項２記載の発明のように汚濁排水に添加し、撹拌することにより、汚濁排水が酸性又はアルカリ性（ｐＨ４〜１０の範囲）であっても、極めて迅速に汚濁物質（溶存物質も含む）を物理的・化学的に凝集分離・沈降して、清浄且つ中性の処理水が得られ、しかも凝集分離・沈降した汚泥は極めて安定な難溶性の物質に変換され、粘性が無く脱水性の優れた性状となる。 Composed of a natural mineral mainly composed of anhydrous gypsum according to the first aspect of the invention described above, blended with a finely pulverized product obtained by adding gypsum to a clinker made of limestone, quartzite, iron oxide and clay, and finely divided aluminum sulfate. By using an agglomerated separation and purification agent for polluted wastewater composed of a composition in which the main component and the essential component are blended, the agglomerated separation and purification agent is added to the contaminated wastewater as in the invention of claim 2 and stirred. Even if the polluted wastewater is acidic or alkaline (in the range of pH 4 to 10), the polluted substances (including dissolved substances) are coherently separated and settled physically and chemically to clean and neutral treated water. In addition, sludge that has been flocculated and separated and settled is converted into a very stable and hardly soluble substance, and has no viscosity and excellent dewatering properties.
前記請求項３及び請求項４記載の発明に係る汚濁排水の凝集分離浄化剤を使用し、この凝集分離浄化剤を請求項５及び請求項６記載の発明のように汚濁排水に添加し、撹拌することにより、汚濁排水中の遊離酸性物質の中和と凝集性能が高く、酸性度の強い汚濁排水にも対応できる。 The aggregated separation and purification agent for polluted wastewater according to the inventions of claim 3 and claim 4 is used, and this aggregated separation and purification agent is added to the contaminated wastewater as in the inventions of claims 5 and 6 and stirred. By doing so, the neutralization and coagulation performance of the free acidic substances in the polluted wastewater is high, and it is possible to deal with polluted wastewater with strong acidity.
請求項７記載の発明の汚濁排水の凝集分離浄化剤を使用し、この凝集分離浄化剤を請求項８記載の発明のように汚濁排水に添加し、撹拌することにより、汚濁排水中の懸濁物質のみならず溶存する重金属類等をも化学的に捕捉し不溶性物質に変換すると同時に強い凝集作用により速やかに分離・沈降するので、上澄み水は連続的に放流することが可能となる。また、分離、脱水した汚泥（フロック）は極めて安定で土壌汚染対策法施行規則に定める基準値の対象物質である第二種特定有害物質（重金属等）の再溶出による環境汚染も防止できる。 The flocculation separation purification agent of the polluted waste water of the invention according to claim 7 is used, and the flocculation separation purification agent is added to the pollution waste water as in the invention of claim 8 and stirred to suspend in the waste water. Since not only substances but also dissolved heavy metals are chemically captured and converted into insoluble substances, and at the same time, they are quickly separated and settled by a strong coagulation action, so that the supernatant water can be discharged continuously. In addition, the separated and dewatered sludge (floc) is extremely stable and can prevent environmental pollution caused by re-elution of type 2 specified hazardous substances (heavy metals, etc.), which are the target substances of the standard values stipulated in the enforcement regulations of the Soil Contamination Countermeasures Law.
請求項９及び請求項１０記載の発明に係る汚濁排水の凝集分離浄化剤を使用し、この凝集分離浄化剤を請求項１１及び請求項１２記載の発明のように汚濁排水に添加し、撹拌することにより、工場排水等の汚濁排水中に水溶性のフッ化水素酸等のハロゲン化物が溶存している場合において、中和剤を使わずとも化学的、物理的に捕捉し不溶性物質に変換させることができる。そして、これら不溶性物質は短時間で凝集・分離・沈降する。一方、消石灰等の中和剤によってフッ化カルシウム等に変換された懸濁物質が共存する場合においても、当該発明の強い凝集作用により速やかに分離沈降するので、上澄み水を放流することが可能になる。また、沈降、脱水後の汚泥（フロック）は極めて安定なのでフッ素等ハロゲン物質が再溶出することはない。 The coagulation / separation purification agent for polluted wastewater according to the inventions of claims 9 and 10 is used, and the coagulation / separation purification agent is added to the pollution wastewater as in the inventions of claims 11 and 12 and stirred. Therefore, when water-soluble hydrofluoric acid and other halides are dissolved in polluted wastewater such as factory wastewater, it can be chemically and physically captured and converted to insoluble substances without using a neutralizing agent. be able to. These insoluble substances aggregate, separate and settle in a short time. On the other hand, even when a suspended substance converted into calcium fluoride or the like by a neutralizing agent such as slaked lime coexists, it can be separated and settled quickly by the strong aggregating action of the invention, so that the supernatant water can be discharged. Become. In addition, sludge (floc) after sedimentation and dehydration is extremely stable, so that halogen substances such as fluorine do not re-elute.
以下に本発明について更に詳述する。
本発明に係る凝集分離浄化剤は、無水石膏を主体とする天然鉱物に対して石灰石、珪石、酸化鉄、粘土からなるクリンカーに石膏を加えた微粉砕物及び微粉硫酸アルミニウムを配合したものが主要成分となり、これに必須成分として、微粉の２−（メタクリロイルオキシ）−エチルトリメチルアンモニウム＝クロリド重合体及び微粉のアクリルアミド・アクリル酸ナトリウム・アクリロイルアミノメチルプロパンスルホン酸ナトリウム共重合物）から成る微粉体とアルカリ金属炭酸塩及び／又はアルカリ土類金属の炭酸塩及び／又は水酸化物、酸化物とチオ硫酸ナトリウム及び／又は硫酸第一鉄と合成ハイドロタルサイトとが配合されて構成されている。
The present invention is described in further detail below.
The main component of the flocculation / separation purification agent according to the present invention is a blend of a finely pulverized product obtained by adding gypsum to a clinker made of limestone, quartzite, iron oxide, clay, and finely divided aluminum sulfate to a natural mineral mainly composed of anhydrous gypsum. A fine powder consisting of fine powder of 2- (methacryloyloxy) -ethyltrimethylammonium chloride polymer and fine powder of acrylamide / sodium acrylate / acryloylaminomethylpropane sulfonate copolymer) as essential components Alkali metal carbonate and / or alkaline earth metal carbonate and / or hydroxide, oxide, sodium thiosulfate and / or ferrous sulfate and synthetic hydrotalcite are blended.
前記無水石膏を主体とする天然鉱物の汚濁排水に対する作用、効果については以下の通りである。
すなわち、天然鉱物には、多種多様の鉱物性微量元素（ミネラル成分）が含有されているので、当該汚濁排水中に経時的に溶出し、排水中の溶存酸素や解離酸イオンと相乗的に作用して、汚濁物質中の有機物（溶存物質も含む）を還元又は酸化・分解等の反応により水に難溶性の凝固体として分離させる機能がある。また、主体となる無水石膏は、当該汚濁排水中で懸濁しその一部が溶解し、後述する微粉硫酸アルミニウムの解離により生成する酸の中和剤としての機能を発揮すると同時に、凝集・固化反応の助剤としても寄与する。
微粉硫酸アルミニウムは、当該汚濁排水に容易に溶解し、加水分解反応により酸化アルミニウムＡｌ2Ｏ3と硫酸Ｈ2ＳＯ4に解離する。酸化アルミニウムは更にコロイド状の水酸化アルミニウムＡｌ（ＯＨ）3とイオン化した水酸化アルミニウム〔Ａｌm（ＯＨ）n +〕からなる重縮合水酸化アルミニウムに転化する。この重縮合水酸化アルミニウムは、当該汚濁排水中の浮遊懸濁物質の粒子間の電位を低下させる。そのために、浮遊懸濁物質（ＳＳ）の粒子間のバランスは崩壊し微粒子化されるが、新たに微粒子は整理されて凝集することになる。また、有機金属類の無機化の機能と金属類（重金属類も含む）イオンの収着・固定・分離及び酸化触媒機能があり、これらの機能によって反応は更に促進される。
もう一つの主要成分である石灰石、珪石、酸化鉄、粘土からなるクリンカーに石膏を加えた微粉砕物は、凝集体の沈降を促進すると同時に中和剤としても働き、微量含まれる酸化鉄は汚濁物質の凝集・固定・変換等のそれぞれの反応における触媒として相乗効果を促す作用がある。
About the effect | action with respect to the polluted waste water of the natural mineral which has the said anhydrous gypsum as a main, it is as follows.
In other words, since natural minerals contain a wide variety of mineral trace elements (mineral components), they elute over time into the contaminated wastewater and act synergistically with dissolved oxygen and dissociated acid ions in the wastewater. Thus, there is a function of separating organic substances (including dissolved substances) in pollutants as a hardly-soluble solidified substance in water by a reaction such as reduction or oxidation / decomposition. The main anhydrous gypsum is suspended in the polluted wastewater and part of it dissolves, and it functions as a neutralizing agent for the acid produced by the dissociation of finely divided aluminum sulfate described later, and at the same time, agglomeration and solidification reaction It also contributes as an auxiliary.
The finely divided aluminum sulfate is easily dissolved in the polluted waste water and dissociated into aluminum oxide Al 2 O 3 and sulfuric acid H 2 SO 4 by a hydrolysis reaction. The aluminum oxide is further converted into polycondensed aluminum hydroxide composed of colloidal aluminum hydroxide Al (OH) 3 and ionized aluminum hydroxide [Al m (OH) n + ]. This polycondensed aluminum hydroxide lowers the potential between particles of suspended suspended solids in the polluted waste water. For this reason, the balance between the suspended suspended matter (SS) particles collapses and becomes fine particles, but the fine particles are newly arranged and aggregated. In addition, there are functions of mineralizing organic metals and sorption / fixation / separation of metals (including heavy metals) ions and oxidation catalyst functions, and these functions further promote the reaction.
The finely pulverized product in which gypsum is added to clinker consisting of limestone, silica, iron oxide, and clay, which are the other main components, promotes sedimentation of aggregates and at the same time acts as a neutralizing agent. As a catalyst in each reaction such as aggregation, fixation, and conversion of substances, it has a function of promoting a synergistic effect.
本発明に係る凝集分離浄化剤は、前述した主要成分と、後述する必須成分とから構成され、主要成分に対する必須成分の配合比を定めているので、更に説明する。 The agglomeration separation and purification agent according to the present invention is composed of the main components described above and the essential components described below, and further defines the composition ratio of the essential components to the main components.
請求項１，３，４，７，９，１０記載の発明に係る汚濁排水の凝集分離浄化剤の必須成分である微粉の２−（メタクリロイルオキシ）−エチルトリメチルアンモニウム＝クロリド重合体及び微粉のアクリルアミド・アクリル酸ナトリウム・アクリロイルアミノメチルプロパンスルホン酸ナトリウム共重合物から成る微粉体は、分類上は高分子系凝集剤に属するが、上記の特定した微粉ポリマー体の組合わせにより、静電気的吸着架橋と水素結合による吸着架橋の両機能を併せ持ち、且つ構成比率（重量比）を変化させることにより汚濁排水が酸性又はアルカリ性であっても対応可能なので煩雑な中和工程を削除でき、前述した主要成分との相乗効果で従来の有機高分子系凝集剤単独使用量の１０分の１で同等の効果が得られ、分離水及びフロックともに粘性が無いので脱水効率が高く、極めて経済的である。また、これらの有機合成高分子は生分解性が低いとされているので使用量の大幅減は環境リスク低減効果もある。
この必須成分は、主要成分１００重量部に対し０．５〜１５重量部が配合される。この配合比は汚濁排水の種類や濃度により変化させることができるが、０．５重量部未満では、架橋作用が弱くフロックが小さいため沈降速度が遅い。また、１５重量部を超えると、フロックが大きくなり過ぎて内部に水を抱え込み廃棄沈澱物の量が増大し、分離水及びフロックともに粘性が高くなって脱水効率が極端に下がってしまう。
Fine pulverized 2- (methacryloyloxy) -ethyltrimethylammonium chloride polymer and pulverized acrylamide, which are essential components of the coagulation separation and purification agent for polluted waste water according to the inventions of claims 1, 3, 4, 7, 9, and 10.・ The fine powder made of sodium acrylate / acryloylaminomethylpropanesulfonic acid sodium copolymer belongs to the polymeric flocculant for classification. It has both functions of adsorption crosslinking by hydrogen bonding, and by changing the composition ratio (weight ratio), it can be handled even if the polluted wastewater is acidic or alkaline, so the complicated neutralization process can be eliminated. The same effect can be obtained with one-tenth of the amount of conventional organic polymer flocculant used alone. High dewatering efficiency because the viscosity is not in both click, it is very economical. In addition, since these organic synthetic polymers are said to have low biodegradability, a significant reduction in the amount used also has an effect of reducing environmental risks.
This essential component is blended in an amount of 0.5 to 15 parts by weight based on 100 parts by weight of the main component. This blending ratio can be changed depending on the type and concentration of polluted wastewater, but if it is less than 0.5 parts by weight, the sedimentation rate is slow because the crosslinking action is weak and the flocs are small. On the other hand, when the amount exceeds 15 parts by weight, the floc becomes too large and the water is held inside to increase the amount of waste precipitates. Both the separated water and the floc become highly viscous and the dehydration efficiency is extremely lowered.
請求項３，４記載の発明に係る汚濁排水の凝集分離浄化剤の必須成分であるアルカリ金属炭酸塩及び／又はアルカリ土類金属の炭酸塩及び／又は水酸化物、酸化物は、汚濁水中の遊離酸性物質、ハロゲン化水素、解離して酸性を示す懸濁物質及び溶解性物質と反応して中性化する機能を持つ。
この必須成分は、主要成分１００重量部に対し、７〜３０重量部が配合される。この配合比は上述した各種酸性物質による水素イオン濃度によって変化させることができるが、７重量部未満では、主要成分のひとつである水酸化アルミニウムの解離により生成する硫酸との反応で消費されて中性化機能が弱まってしまう。また、３０重量部を超えるとアルカリ性が強くなりすぎて（ｐＨ４〜１０の範囲から外れて）凝集及びフロックの適正な形成を妨げてしまう。
The alkali metal carbonate and / or alkaline earth metal carbonate and / or hydroxide, oxide, which is an essential component of the polluted waste water aggregating and purifying agent according to the third and fourth aspects of the present invention, is contained in the polluted water. It has a function of neutralizing by reacting with free acidic substances, hydrogen halides, dissociated suspended substances and soluble substances.
The essential component is blended in an amount of 7 to 30 parts by weight with respect to 100 parts by weight of the main component. This blending ratio can be changed depending on the hydrogen ion concentration by the various acidic substances described above, but if it is less than 7 parts by weight, it is consumed by the reaction with sulfuric acid produced by the dissociation of aluminum hydroxide which is one of the main components. Sexual function is weakened. Moreover, when it exceeds 30 weight part, alkalinity will become strong too much (it remove | deviates from the range of pH 4-10), and aggregation and the proper formation of a floc will be prevented.
請求項７記載の発明に係る汚濁排水の凝集分離浄化剤の必須成分であるチオ硫酸ナトリウム及び／又は硫酸第一鉄は、まずチオ硫酸ナトリウムが溶存重金属類と積極的に反応して不溶性のチオ硫酸金属化合物Ｎａ3〔Ｍｅ（Ｓ2Ｏ3）2〕を形成する機能がある。ちなみに、金属化合物の多くは六価クロムイオンが黄発色するように、各種特有の呈色反応を示すが、硫酸第一鉄を併用することにより、これらの発色を防止することができる。
なお、対象金属が濃発色を呈さない場合には、チオ硫酸ナトリウム単独使用も可能である。
この必須成分は、主要成分１００重量部に対し、２〜６０重量部が配合される。この配合比は汚濁溶存物質中の重金属類の数値に応じて変化させることができるが、２重量部未満では溶存重金属類の不溶化には不十分である。また、６０重量部を超えた場合、チオ硫酸ナトリウムの過剰は遊離硫黄による悪臭等で作業環境を悪化させ、硫酸第一鉄の過剰は処理後の排水が赤味を帯びてきて好ましくない。
The sodium thiosulfate and / or ferrous sulfate, which is an essential component of the coagulation / separation agent for contaminated wastewater according to the seventh aspect of the invention, is such that sodium thiosulfate first reacts positively with dissolved heavy metals to dissolve insoluble thiols. It has a function of forming a metal sulfate metal compound Na 3 [Me (S 2 O 3 ) 2 ]. Incidentally, many of the metal compounds exhibit various specific color reactions such that hexavalent chromium ions are colored yellow. However, these colors can be prevented by using ferrous sulfate in combination.
In addition, when the target metal does not exhibit deep color development, it is possible to use sodium thiosulfate alone.
The essential component is blended in an amount of 2 to 60 parts by weight with respect to 100 parts by weight of the main component. This blending ratio can be changed according to the value of heavy metals in the polluted dissolved material, but if it is less than 2 parts by weight, it is insufficient for insolubilization of the dissolved heavy metals. On the other hand, when the amount exceeds 60 parts by weight, excessive sodium thiosulfate deteriorates the working environment due to bad odor due to free sulfur, etc., and excessive ferrous sulfate is not preferable because the wastewater after treatment becomes reddish.
請求項９，１０記載の発明に係る汚濁排水の凝集分離浄化剤の必須成分である合成ハイドロタルサイトは、構造中に炭酸基を持つことからアニオン交換性があり、特に陰イオン化傾向の強いフッ素や塩素等のハロゲンとは、炭酸基部分が置換される。この反応は希薄濃度でも素早く進み、当該ハイドロタルサイトの構造内に収着され懸濁する。この懸濁物は、本発明の構成成分の凝集機能により他の浮遊懸濁物質とともに速やかに分離沈降させることができる。
この必須成分は、主要成分１００重量部に対し、５０〜１５００重量部が配合される。
この配合比は汚濁溶存物質中のアニオン性物質の数値に応じて変化させることができるが、５０重量部未満では溶存アニオン性物質の収着・吸着、不溶化には不十分である。また、１５００重量部を超えた場合は、本発明の構成成分の凝集機能に対して過剰となり、浮遊懸濁状態が長時間続き、速やかに分離沈降しないので連続的に上澄み水を放流できず好ましくない。
Synthetic hydrotalcite, which is an essential component of the coagulation / separation purification agent for polluted wastewater according to claims 9 and 10, has a carbonate group in the structure, and thus has anion exchange properties, and particularly fluorine having a strong anionization tendency. Carbonic acid moiety is substituted with halogen such as chlorine. This reaction proceeds rapidly even at dilute concentrations and is sorbed and suspended within the hydrotalcite structure. This suspension can be quickly separated and settled together with other suspended suspended solids by the coagulation function of the constituents of the present invention.
This essential component is blended in an amount of 50 to 1500 parts by weight with respect to 100 parts by weight of the main component.
This blending ratio can be changed according to the value of the anionic substance in the polluted dissolved substance, but if it is less than 50 parts by weight, it is insufficient for sorption / adsorption and insolubilization of the dissolved anionic substance. Further, when the amount exceeds 1500 parts by weight, it is excessive with respect to the coagulation function of the constituent components of the present invention, and the suspended suspension state lasts for a long time, so that the supernatant water cannot be discharged continuously. Absent.
本発明に係る汚濁排水の凝集分離浄化剤は、上述したように、天然鉱物（粉末）と、無機系化合物（全て粉末）と、少量の２種類の高分子系凝集剤（いずれも粉末）とが所定の割合で混合されて構成されている。
本発明に係る汚濁排水の凝集分離浄化剤により、汚濁排水を浄化する場合、この汚濁排水の凝集分離浄化剤の使用上の条件としては、（１）粉末のまま所定量を添加する。（２）汚濁排水との混合攪拌は、設計された反応（分解、泥質変換、固定、凝集、分離沈降等）をより一層効果的にするために強い攪拌が望ましい。（３）標準添加量は、当該汚濁排水の浮遊 懸濁物質（ＳＳ）の５〜１０％（但し、対象物質がアオコ、プランクトン等の動植物及びこれらの分解物、界面活性剤、油性物質等の有機物の場合は、この数値の１０倍以上）が目安となる。
As described above, the coagulation / separation purification agent for polluted wastewater according to the present invention includes a natural mineral (powder), an inorganic compound (all powder), and a small amount of two types of polymer flocculants (both powders) Are mixed at a predetermined ratio.
When purifying the polluted wastewater with the polluted wastewater flocculation / separation agent according to the present invention, the conditions for use of the polluted wastewater flocculation / separation purifier are as follows: (1) A predetermined amount is added as powder. (2) The mixing and stirring with the polluted wastewater is preferably strong stirring in order to make the designed reaction (decomposition, mud conversion, fixation, aggregation, separation and sedimentation, etc.) more effective. (3) The standard addition amount is 5 to 10% of suspended suspended matter (SS) in the polluted wastewater (however, the target substances are flora and fauna such as aoko, plankton and their degradation products, surfactants, oily substances, etc.) In the case of organic substances, this value is 10 times or more.
本発明に係る汚濁排水の凝集分離浄化剤を使用した浄化方法における凝集反応は、極めて早く凝集汚泥は攪拌により更に固く高密度化して分離する。凝集分離汚泥は疎水性の極めて安定した汚泥であり、崩壊や再溶解することがない。
また、凝集分離汚泥の脱水性は高く、脱水汚泥の臭気も緩和され、自然土壌に近似した汚泥に変換され、重金属類等の有害物質の再溶出もない。
The coagulation reaction in the purification method using the coagulation separation and purification agent for the polluted waste water according to the present invention is very fast, and the coagulation sludge is separated by being further hardened and densified by stirring. Aggregated and separated sludge is a hydrophobic and extremely stable sludge and does not collapse or re-dissolve.
Moreover, the dewatering property of the coagulated and separated sludge is high, the odor of the dewatered sludge is alleviated, converted into sludge that approximates natural soil, and no toxic substances such as heavy metals are re-eluting.
上述したような本発明に係る汚濁排水の凝集分離浄化剤において、必須成分中のアルカリ金属炭酸塩及び／又はアルカリ土類金属の炭酸塩及び／又は水酸化物、酸化物を含まない構成とすることも可能である。この場合には、汚濁排水中の遊離酸性物質の中和と凝集反応の点でやや性能が低下するものの上述した汚濁排水の凝集分離浄化剤の場合とほぼ同等の作用を発揮させることができる。 The above-described coagulation / separation purification agent for polluted wastewater according to the present invention does not include alkali metal carbonate and / or alkaline earth metal carbonate and / or hydroxide and oxide in the essential components. It is also possible. In this case, although the performance is slightly lowered in terms of neutralization of free acidic substances in the polluted wastewater and agglomeration reaction, it is possible to exert substantially the same action as in the case of the above-described agglomerated separation and purification agent for polluted wastewater.
広範囲な汚濁排水の浄化に際して、凝集処理時に煩雑なｐＨ調整工程を要さずとも、適正な大きさと強さを持ち且つ短時間で沈降するフロックを形成し、処理水及びフロックともに弱粘性で脱水効率が上がり、更に当該フロックの含水比を下げることで顕著な経済効果をもたらすとともに、併せて環境リスクの低減をも図ることができる汚濁排水の凝集分離浄化剤及び浄化方法を提供するという目的を、無水石膏を主体とする天然鉱物に対して石灰石、珪石、酸化鉄、粘土からなるクリンカーに石膏を加えた微粉砕物及び微粉硫酸アルミニウムを配合したものから成る主成分１００重量部に対し、必須成分として微粉の２−（メタクリロイルオキシ）−エチルトリメチルアンモニウム＝クロリド重合体及び微粉のアクリルアミド・アクリル酸ナトリウム・アクリロイルアミノメチルプロパンスルホン酸ナトリウム共重合物から成る微粉体０．５〜１５重量部が配合されている凝集分離浄化剤を、汚濁排水に添加し、撹拌して汚濁排水の浄化を行う構成により実現した。 When purifying a wide range of polluted wastewater, a floc that has an appropriate size and strength and settles in a short time is formed without requiring a complicated pH adjustment process during agglomeration treatment, and both treated water and floc are weakly dehydrated. An object of the present invention is to provide an agglomerated separation and purification agent for polluted wastewater and a purification method that can increase the efficiency and further bring about a remarkable economic effect by lowering the water content ratio of the floc and also reduce the environmental risk. Essential for 100 parts by weight of the main component consisting of pulverized limestone, quartzite, iron oxide, clay and finely pulverized material containing gypsum and finely divided aluminum sulfate. Fine 2- (methacryloyloxy) -ethyltrimethylammonium chloride polymer and fine acrylamide / acrylic acid as ingredients A configuration in which an agglomerated separation and purification agent containing 0.5 to 15 parts by weight of a fine powder composed of sodium thorium / acryloylaminomethylpropanesulfonate copolymer is added to the contaminated wastewater and stirred to purify the contaminated wastewater. Realized by.
以下に本発明に係る実施例及び比較例を挙げて本発明を更に具体的に説明するが、本発明はこれに限定されるものではない。 The present invention will be described more specifically with reference to examples and comparative examples according to the present invention, but the present invention is not limited thereto.
（実施例１）
凝集分離浄化剤の調整
無水石膏を主体とする天然鉱物５５重量％と、石灰石、珪石、酸化鉄、粘土からなるクリンカーに石膏を加えた微粉砕物１２重量％と、微粉硫酸アルミニウム３３重量％とを均一に配合し主成分を構成した。
次に、この主成分１００重量部に対して、必須成分として微粉の２−（メタクリロイルオキシ）−エチルトリメチルアンモニウム＝クロリド重合体及び微粉のアクリルアミド・アクリル酸ナトリウム・アクリロイルアミノメチルプロパンスルホン酸ナトリウム共重合物から成る（重量比２：１）微粉体３重量部を配合し、均一に混合して本実施例の凝集分離浄化剤を調整した。
また、比較例として使用する凝集分離浄化剤を以下のように調整した。
無水石膏を主体とする天然鉱物５５重量％と、石灰石、珪石、酸化鉄、粘土からなるクリンカーに石膏を加えた微粉砕物１２重量％と、微粉硫酸アルミニウム３３重量％とを均一に配合し主成分を構成した。
次に、この主成分１００重量部に対して、必須成分として微粉の２−（メタクリロイルオキシ）−エチルトリメチルアンモニウム＝クロリド重合体のみを３重量部配合し、均一に混合した。
上記で調整した２種類（本発明品と比較品）の凝集分離浄化剤を使用して、大雨による珊瑚礁海域への赤土流出汚濁水の浄化処理試験を行った結果を表１に示す。
Adjustment of the flocculent separation and purification agent 55% by weight of natural minerals mainly composed of anhydrous gypsum, 12% by weight of finely pulverized product obtained by adding gypsum to clinker made of limestone, silica stone, iron oxide and clay, and 33% by weight of finely divided aluminum sulfate Were mixed uniformly to constitute the main component.
Next, with respect to 100 parts by weight of the main component, fine 2- (methacryloyloxy) -ethyltrimethylammonium chloride polymer as essential components and finely divided acrylamide / sodium acrylate / sodium acryloylaminomethylpropanesulfonate copolymer 3 parts by weight of fine powder (2: 1 by weight) composed of the product was blended and uniformly mixed to prepare the coagulation separation and purification agent of this example.
Moreover, the coagulation separation purification agent used as a comparative example was adjusted as follows.
Mainly blended 55% by weight of natural minerals mainly composed of anhydrous gypsum, 12% by weight of finely pulverized product of gypsum added to clinker made of limestone, silica, iron oxide and clay, and 33% by weight of finely divided aluminum sulfate. Configured the ingredients.
Next, 3 parts by weight of fine 2- (methacryloyloxy) -ethyltrimethylammonium chloride polymer as an essential component was blended with 100 parts by weight of the main component and mixed uniformly.
Table 1 shows the results of a purification test of red soil runoff polluted water into coral reef areas caused by heavy rain using the two types of coagulation separation and purification agents prepared above (the product of the present invention and a comparative product).
（実施例２−１）
凝集分離浄化剤の調整
無水石膏を主体とする天然鉱物５５重量％と、石灰石、珪石、酸化鉄、粘土からなるクリンカーに石膏を加えた微粉砕物１２重量％と、微粉硫酸アルミニウム３３重量％とを均一に配合し主成分を構成した。
次に、この主成分１００重量部に対して、必須成分として微粉の２−（メタクリロイルオキシ）−エチルトリメチルアンモニウム＝クロリド重合体及び微粉のアクリルアミド・アクリル酸ナトリウム・アクリロイルアミノメチルプロパンスルホン酸ナトリウム共重合物から成る（重量比２：１）微粉体３重量部と、炭酸ナトリウム２２重量部とを配合し、均一に混合して本実施例の凝集分離浄化剤を調整した。
この凝集分離浄化剤を使用して、以下（１）〜（５）の浄化処理試験を行った。
比較例としては、現状の無機系・有機系凝集剤で汚濁排水を処理している実数値を採用した。
(Example 2-1)
Adjustment of the flocculent separation and purification agent 55% by weight of natural minerals mainly composed of anhydrous gypsum, 12% by weight of finely pulverized product obtained by adding gypsum to clinker made of limestone, silica stone, iron oxide and clay, and 33% by weight of finely divided aluminum sulfate Were mixed uniformly to constitute the main component.
Next, with respect to 100 parts by weight of the main component, fine 2- (methacryloyloxy) -ethyltrimethylammonium chloride polymer as essential components and finely divided acrylamide / sodium acrylate / sodium acryloylaminomethylpropanesulfonate copolymer 3 parts by weight of a fine powder (2: 1 by weight) and 22 parts by weight of sodium carbonate were blended and mixed uniformly to prepare the coagulation separation and purification agent of this example.
Using this flocculation / separation purification agent, the following purification treatment tests (1) to (5) were conducted.
As a comparative example, real values were used to treat polluted wastewater with the current inorganic and organic flocculants.
（１）公園池の浄化試験の結果を表２に示す。
（２）防火池の浄化試験の結果を表３に示す。
（３）トンネル工事濁水の浄化試験の結果を表４に示す。
（４）航空機洗浄汚濁排水の浄化試験の結果を表５に示す。
（５）下水処理場の第一沈殿池出口排水の浄化試験の結果を表６に、凝集汚泥の脱水試験の結果を表７に示す。
（実施例２−２）
凝集分離浄化剤の調整
無水石膏を主体とする天然鉱物５５重量％と、石灰石、珪石、酸化鉄、粘土からなるクリンカーに石膏を加えた微粉砕物１１重量％と、微粉硫酸アルミニウム３４重量％とを均一に配合し主成分を構成した。
次に、この主成分１００重量部に対して、必須成分として微粉の２−（メタクリロイルオキシ）−エチルトリメチルアンモニウム＝クロリド重合体及び微粉のアクリルアミド・アクリル酸ナトリウム・アクリロイルアミノメチルプロパンスルホン酸ナトリウム共重合物から成る（重量比１：６）微粉体１４重量部と、炭酸ナトリウム２２重量部とを配合し、均一に混合して本実施例の凝集分離浄化剤を調整した。
この凝集分離浄化剤を使用して、杭工事等で発生する建設汚泥（ベントナイト排水）の凝集分離浄化処理試験を行った結果を表８に示す。
比較例としては、現状の無機系・有機系凝集剤を採用した。
Adjustment of agglomeration separation and purification agent 55% by weight of natural minerals mainly composed of anhydrous gypsum, 11% by weight of finely pulverized product obtained by adding gypsum to clinker made of limestone, silica stone, iron oxide and clay, and 34% by weight of finely divided aluminum sulfate Were mixed uniformly to constitute the main component.
Next, with respect to 100 parts by weight of the main component, fine 2- (methacryloyloxy) -ethyltrimethylammonium chloride polymer as essential components and finely divided acrylamide / sodium acrylate / sodium acryloylaminomethylpropanesulfonate copolymer 14 parts by weight of fine powder composed of a product (weight ratio 1: 6) and 22 parts by weight of sodium carbonate were blended and mixed uniformly to prepare an agglomeration separation and purification agent of this example.
Table 8 shows the results of a coagulation separation purification treatment test of construction sludge (bentonite drainage) generated in pile construction or the like using this coagulation separation purification agent.
As a comparative example, the present inorganic and organic flocculants were employed.
（実施例３）
凝集分離浄化剤の調整
無水石膏を主体とする天然鉱物５３重量％と、石灰石、珪石、酸化鉄、粘土からなるクリンカーに石膏を加えた微粉砕物１２重量％と、微粉硫酸アルミニウム３５重量％とを均一に配合し主成分を構成した。
次に、この主成分１００重量部に対して、必須成分として微粉の２−（メタクリロイルオキシ）−エチルトリメチルアンモニウム＝クロリド重合体及び微粉のアクリルアミド・アクリル酸ナトリウム・アクリロイルアミノメチルプロパンスルホン酸ナトリウム共重合物から成る（重量比１：１）微粉体９重量部と、炭酸ナトリウム２１重量部と、チオ硫酸ナトリウム４４重量部と、硫酸第一鉄４３重量部とを配合し、均一に混合して本実施例の凝集分離浄化剤を調整した。
この凝集分離浄化剤を使用して、以下（１）〜（２）の（有害物質高含有）工場排水浄化処理試験を行った。
比較例としては、本発明の実施例１で調整した凝集分離浄化剤を採用した。
（１）事務機器製造工場メッキラインの含有六価クロム排水の浄化試験の結果を表９及び表１０に示す。
Adjustment of the flocculent separation and purification agent 53% by weight of natural minerals mainly composed of anhydrous gypsum, 12% by weight of finely pulverized product obtained by adding gypsum to clinker made of limestone, silica, iron oxide and clay, and 35% by weight of finely divided aluminum sulfate Were mixed uniformly to constitute the main component.
Next, with respect to 100 parts by weight of the main component, fine 2- (methacryloyloxy) -ethyltrimethylammonium chloride polymer as essential components and finely divided acrylamide / sodium acrylate / sodium acryloylaminomethylpropanesulfonate copolymer 9 parts by weight of fine powder (1: 1 by weight), 21 parts by weight of sodium carbonate, 44 parts by weight of sodium thiosulfate, and 43 parts by weight of ferrous sulfate are mixed and mixed uniformly. The coagulation separation purification agent of the Example was prepared.
Using this flocculation / separation purification agent, the following (1) to (2) factory wastewater purification treatment test (having a high content of harmful substances) was conducted.
As a comparative example, the coagulation separation purification agent prepared in Example 1 of the present invention was employed.
(1) Tables 9 and 10 show the results of the purification test of hexavalent chromium wastewater contained in the plating line of the office equipment manufacturing factory.
（２）半導体製造工場排水の浄化試験の結果を表１１及び表１２に示す。
実施例４
凝集分離浄化剤の調整
無水石膏を主体とする天然鉱物５５重量％と、石灰石、珪石、酸化鉄、粘土からなるクリンカーに石膏を加えた微粉砕物１２重量％と、微粉硫酸アルミニウム３３重量％とを均一に配合し主成分を構成した。
次に、この主成分１００重量部に対して、必須成分として微粉の２−（メタクリロイルオキシ）−エチルトリメチルアンモニウム＝クロリド重合体及び微粉のアクリルアミド・アクリル酸ナトリウム・アクリロイルアミノメチルプロパンスルホン酸ナトリウム共重合物から成る（重量比１：１）微粉体２重量部と、Ｍｇ6Ａｌ2（ＯＨ）16ＣＯ3・４Ｈ2Ｏで示される塩基性炭酸塩４００重量部とを配合し、均一に混合して本実施例の凝集分離浄化剤を調整した。
この凝集分離浄化剤を使用して、半導体製造工場排水の浄化試験を行った結果を表１３に示す。
比較例としては、現状の無機系・有機系凝集剤を採用した。
Adjustment of the flocculent separation and purification agent 55% by weight of natural minerals mainly composed of anhydrous gypsum, 12% by weight of finely pulverized product obtained by adding gypsum to clinker made of limestone, silica stone, iron oxide and clay, and 33% by weight of finely divided aluminum sulfate Were mixed uniformly to constitute the main component.
Next, with respect to 100 parts by weight of the main component, fine 2- (methacryloyloxy) -ethyltrimethylammonium chloride polymer as essential components and finely divided acrylamide / sodium acrylate / sodium acryloylaminomethylpropanesulfonate copolymer 2 parts by weight of fine powder (1: 1 by weight) and 400 parts by weight of basic carbonate represented by Mg 6 Al 2 (OH) 16 CO 3 .4H 2 O are mixed and mixed uniformly. Thus, the coagulation separation purification agent of this example was prepared.
Table 13 shows the results of a purification test of semiconductor manufacturing factory effluent using this coagulation separation purification agent.
As a comparative example, the present inorganic and organic flocculants were employed.
以上、種々の汚濁排水について凝集分離浄化試験を実施した試験結果が示すように、本実施例の汚濁排水の凝集分離浄化剤及び浄化方法によれば、汚濁水中の浮遊 懸濁物質（ＳＳ）と溶存物質（金属、ハロゲン等の水溶性物質）を同時に吸着、収着、凝集反応により分離除去することができ、更に、分離除去後の汚泥（フロック）の泥質変換は随時その反応も進行し、極めて安定化するために再崩壊することもなく、また、重金属類等の溶出も抑制され、従来の凝集剤にはみられない効果が証明されている。 As described above, as shown in the test results of the coagulation separation purification test for various polluted wastewater, according to the coagulation separation purification agent and purification method of the polluted wastewater of this example, suspended suspended matter (SS) in the polluted water and Dissolved substances (water-soluble substances such as metals and halogens) can be separated and removed at the same time by adsorption, sorption, and agglomeration reactions. Furthermore, the mud conversion of sludge (floc) after separation and removal proceeds as needed. Since it is extremely stable, it does not re-disintegrate, and elution of heavy metals is suppressed, which proves an effect not seen in conventional flocculants.
また、本実施例の凝集分離浄化剤及び浄化方法は、原則として粉末のまま汚濁排水（又は汚濁廃水）に添加し、極めて短時間の攪拌で容易に汚濁物質は疎水化されて凝集し分離する。従って、分離汚泥の脱水性は大幅に改善される。
これに対して、従来の凝集剤の場合は予め水に溶かして添加するために溶解設備が必要となり、低温時には溶解度が低下するので、その管理面でも負担が生じる。また、分離汚泥の脱水性は極めて悪く、含水率も高いので効率的でない。
In addition, the agglomeration separation and purification agent and purification method of the present embodiment are added to the polluted wastewater (or the polluted wastewater) as a powder in principle, and the polluted substances are easily hydrophobized and aggregated and separated by stirring for a very short time. . Therefore, the dewaterability of the separated sludge is greatly improved.
On the other hand, in the case of a conventional flocculant, a dissolution facility is required to add it by dissolving it in water in advance, and the solubility is reduced at low temperatures, so that the management is burdensome. Moreover, the dewaterability of the separated sludge is extremely poor and the water content is high, so it is not efficient.
本実施例の凝集分離浄化剤及び浄化方法によれば、あらゆる汚濁排水（又は汚濁廃水）の浄化処理が短時間で容易に行え、上澄み水及び脱水後の濾液はそのまま放流でき、沈澱した凝集分離汚泥は泥質変換されて安定した汚泥が得られること、粉末のまま添加するために設備も簡素化できること、臭気等も吸着、収着作用により緩和されること等の極めて優れた諸効能が得られる。 According to the coagulation separation purification agent and purification method of the present embodiment, purification treatment of all polluted wastewater (or pollution wastewater) can be easily performed in a short time, and the supernatant water and the filtrate after dehydration can be discharged as they are, and the precipitated coagulation separation is performed. Sludge can be converted into mud and stable sludge can be obtained, equipment can be simplified because it is added as powder, and odors can be alleviated by adsorption and sorption. It is done.
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| CN101274794B (en) * | 2008-04-24 | 2010-12-29 | 泉州师范学院 | Fast no-damage method for rehabilitating heavy metal-polluted water |
| CN103043765A (en) * | 2011-10-11 | 2013-04-17 | 天津都创科技有限公司 | Widely-used inorganic powder aggegation agent |
| CN102674512B (en) * | 2012-05-02 | 2015-01-21 | 中国科学院生态环境研究中心 | Composite flocculant for treating anionic dye wastewater and preparation method for composite flocculant |
| KR101632102B1 (en) * | 2013-12-30 | 2016-06-20 | 조석우 | Water Treatment Composition comprising Glauconite |
| CN103936123B (en) * | 2014-04-18 | 2015-04-08 | 芜湖凯奥尔环保科技有限公司 | Oxidation-reduction powdery blue algae treating agent and production method thereof |
| CN103936119B (en) * | 2014-04-18 | 2015-04-08 | 芜湖凯奥尔环保科技有限公司 | Polysilicate ferric aluminum chloride/fluorescent brightener composite cyanobacteria treatment agent and manufacturing method thereof |
| CN103964537B (en) * | 2014-04-23 | 2015-04-29 | 安徽依采妮纤维材料科技有限公司 | Aluminium chlorohydroxide/lignose composited blood-green algae treating agent and preparation method thereof |
| CN104882185B (en) * | 2015-04-08 | 2017-06-30 | 武汉网绿环境技术咨询有限公司 | The flocculant and its application method of radioactive element in a kind for the treatment of sewage |
| JP7186123B2 (en) * | 2019-03-28 | 2022-12-08 | 宇部マテリアルズ株式会社 | How to treat decontamination mud |
| JP7190702B2 (en) * | 2019-03-28 | 2022-12-16 | 宇部マテリアルズ株式会社 | dehydration accelerator |
| CN110395792A (en) * | 2019-07-24 | 2019-11-01 | 陕西朗正环保科技有限公司 | A kind of cohesion curing agent and preparation method thereof |
| JP6739815B1 (en) * | 2019-09-02 | 2020-08-12 | 初雁興業株式会社 | Dredging system |
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| CN112794428A (en) * | 2021-01-04 | 2021-05-14 | 北京爱尔斯姆科技有限公司 | Sewage purification method |
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