CN104628231A - Biochemical-photocatalytic advanced water treatment method for PBBC wastewater - Google Patents
Biochemical-photocatalytic advanced water treatment method for PBBC wastewater Download PDFInfo
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- CN104628231A CN104628231A CN201510078264.3A CN201510078264A CN104628231A CN 104628231 A CN104628231 A CN 104628231A CN 201510078264 A CN201510078264 A CN 201510078264A CN 104628231 A CN104628231 A CN 104628231A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 93
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 49
- 238000006243 chemical reaction Methods 0.000 claims abstract description 45
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 36
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 30
- 230000001699 photocatalysis Effects 0.000 claims abstract description 24
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 18
- 230000035484 reaction time Effects 0.000 claims abstract description 17
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 15
- 238000005342 ion exchange Methods 0.000 claims abstract description 13
- 239000003456 ion exchange resin Substances 0.000 claims abstract description 13
- 229920003303 ion-exchange polymer Polymers 0.000 claims abstract description 13
- 239000011941 photocatalyst Substances 0.000 claims abstract description 13
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 238000007146 photocatalysis Methods 0.000 claims description 22
- 238000005115 demineralization Methods 0.000 claims description 12
- 230000002328 demineralizing effect Effects 0.000 claims description 12
- 239000003957 anion exchange resin Substances 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 7
- 239000003729 cation exchange resin Substances 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 239000003610 charcoal Substances 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- 238000002203 pretreatment Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 9
- 230000003851 biochemical process Effects 0.000 abstract description 5
- 230000015556 catabolic process Effects 0.000 abstract description 5
- 238000006731 degradation reaction Methods 0.000 abstract description 5
- 230000003197 catalytic effect Effects 0.000 abstract description 3
- 230000000295 complement effect Effects 0.000 abstract description 2
- 238000005273 aeration Methods 0.000 abstract 1
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 231100000086 high toxicity Toxicity 0.000 description 7
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 6
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 5
- CMQUQOHNANGDOR-UHFFFAOYSA-N 2,3-dibromo-4-(2,4-dibromo-5-hydroxyphenyl)phenol Chemical compound BrC1=C(Br)C(O)=CC=C1C1=CC(O)=C(Br)C=C1Br CMQUQOHNANGDOR-UHFFFAOYSA-N 0.000 description 4
- KDVYCTOWXSLNNI-UHFFFAOYSA-N 4-t-Butylbenzoic acid Chemical compound CC(C)(C)C1=CC=C(C(O)=O)C=C1 KDVYCTOWXSLNNI-UHFFFAOYSA-N 0.000 description 4
- 238000005842 biochemical reaction Methods 0.000 description 4
- 238000010612 desalination reaction Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- VEORPZCZECFIRK-UHFFFAOYSA-N 3,3',5,5'-tetrabromobisphenol A Chemical compound C=1C(Br)=C(O)C(Br)=CC=1C(C)(C)C1=CC(Br)=C(O)C(Br)=C1 VEORPZCZECFIRK-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000001311 chemical methods and process Methods 0.000 description 2
- -1 hydroxyl radical free radical Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- MNAHQWDCXOHBHK-UHFFFAOYSA-N 1-phenylpropane-1,1-diol Chemical compound CCC(O)(O)C1=CC=CC=C1 MNAHQWDCXOHBHK-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000012264 purified product Substances 0.000 description 1
- 238000006862 quantum yield reaction Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- NESLWCLHZZISNB-UHFFFAOYSA-M sodium phenolate Chemical compound [Na+].[O-]C1=CC=CC=C1 NESLWCLHZZISNB-UHFFFAOYSA-M 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- UCPYLLCMEDAXFR-UHFFFAOYSA-N triphosgene Chemical compound ClC(Cl)(Cl)OC(=O)OC(Cl)(Cl)Cl UCPYLLCMEDAXFR-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/427—Treatment of water, waste water, or sewage by ion-exchange using mixed beds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
- C02F2103/38—Polymers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a biochemical-photocatalytic advanced water treatment method for PBBC wastewater. The method comprises the following steps: (1) filtering the PBBC wastewater; (2) taking a nickel net loaded with titanium dioxide as a photocatalyst, wherein the wave length of the ultraviolet is 254 nm, the light-catalyzed reaction time is 1.5-3 hours; (3) reacting the wastewater in an ABR reaction pool for 20-40 hours, raising the temperature to 28-32 degrees centigrade and continuously performing aeration reaction for 12-24 hours; (4) reacting the wastewater under a catalytic action of the ultraviolet, taking the nickel net loaded with titanium dioxide as a photocatalyst, wherein the wave length of the ultraviolet is 254 nm, the light-catalyzed reaction time is 2-3 hours; (5) performing ion exchange on the wastewater through an ion exchange resin to desalt. By means of combining the biochemical process with the photocatalytic process, through the photocatalytic pretreatment, the method is capable of increasing the biodegradability of the wastewater to have complementary advantages and achieving the aim of advanced degradation of the wastewater.
Description
Technical field
The present invention relates to chemical wastewater treatment technical field, be specifically related to a kind of biochemistry-photochemical catalysis advanced water treatment method of fine chemical product tetrabromobisphenol a polycarbonate oligopolymer (PBBC) waste water
Background technology
Tetrabromobisphenol a polycarbonate oligopolymer is called for short PBBC, is a kind of bromide fire retardant.PBBC uses tetrabromo-bisphenol (TBBA) and triphosgene to prepare with interface fasculation method usually, last sodium phenylate end-blocking, final highly purified product is obtained through multiple tracks pickling, alkali cleaning, washing process, the waste water of high salt (Main Salts is NaCl), high toxicity (main component is phenol and dihydroxyphenyl propane) is produced in production process, this kind of waste water has the features such as water discharge capacity is large, difficult degradation, they are difficult to be degraded under natural environmental condition, easily by food chain enrichment in vivo, be the high toxicity waste water that a class is generally acknowledged.
At present, the treatment process both at home and abroad for this kind of waste water mainly contains physico-chemical process, comprises absorption method, steaming process and saltouts; Biochemical process, mainly comprises activated sludge process and biomembrance process; But it is not thorough to there is process in physico-chemical process, the drawback that cannot degrade thoroughly.Biochemical process convenient operation and management, but because useless Organic substance in water toxicity is large, difficult degradation, biodegradability be poor, directly enter biochemical system and can cause very large impact to microorganism, seriously suppress microbial growth.And the treatment effect that biochemical process has had aliphatic hydrocarbon, poor to highly toxic aromatics treatment effect.
In recent years, photocatalysis technology is as novel advanced processing techniques, be swift in response with it, degrade thoroughly, do not produce the focus that the advantages such as secondary pollution, simple to operate and maintenance cost be low become research gradually, be mainly used in the degradation treatment of high toxicity, lower concentration, hardly degraded organic substance in sewage or air at present, achieve noticeable effect.
Titanium dioxide is green non-poisonous with it, photocatalysis efficiency advantages of higher becomes the most general photocatalyst of a kind of application.When energy is greater than the ultraviolet light wave radiation titanium dioxide of titanium dioxide band-gap energy, be in the electronics (e in valence band
-) will to be excited on conduction band and under electric field action, to move to particle surface, so define hole (h in valence band
+), thus create there is highly active hole/electron pair, and then generate hydroxyl radical free radical OH, the Superoxide anion free radical O with extremely strong oxygenizement
2-, super oxygen hydroxyl radical free radical OOH etc., this kind of group with extremely strong oxygenizement captures the electronics in semiconductor surface adsorbed material or solvent, makes originally the material of not extinction be activated and oxidized, and thorough mineralising is CO
2, H
2o and inorganic salt, do not produce secondary pollution.
But optically catalytic TiO 2 technology quantum yield is not high at present, the simple photocatalysis technology that uses is still inadequate for the high concentration wastewater treatment degree of depth, and the simple photocatalysis method running cost that uses is high.
Summary of the invention
Technical problem to be solved by this invention is: the deficiency existed for prior art, a kind of biochemistry for PBBC waste water-photochemical catalysis advanced water treatment method is provided, the PBBC wastewater degradation of the method to high density, high toxicity, high salt is thorough, there is no secondary pollution, running cost is low, to make up the defect in above-mentioned background technology.
For solving the problems of the technologies described above, technical scheme of the present invention is:
For biochemistry-photochemical catalysis advanced water treatment method of PBBC waste water, it is characterized in that comprising following steps:
(1) pre-treatment: by PBBC waste water filtering, except the suspended solids thing in anhydrating, simultaneously also can the organism of remove portion, the pH value of described PBBC waste water is 6.5 ~ 7.5.
(2) preposition photocatalysis treatment: at room temperature, pretreated PBBC waste water is reacted under ultraviolet katalysis, working load has the nickel screen of titanium dioxide as photocatalyst, described ultraviolet wavelength is 254nm, the light-catalyzed reaction time of described PBBC waste water is 1.5 ~ 3 hours, and the pH value that light-catalyzed reaction terminates rear described PBBC waste water is 7 ~ 8.
(3) biochemical treatment: by the waste water after light-catalyzed reaction at 25 ~ 30 DEG C, reacts 20 ~ 40h in ABR reaction tank, and reaction terminates laggard row aerobic treatment, and temperature is increased to 28 ~ 32 DEG C, continues aerated reaction 12 ~ 24h.
(4) degree of depth photocatalysis treatment: the waste water that step (3) obtains is reacted again under ultraviolet katalysis, working load has the nickel screen of titanium dioxide as photocatalyst, described ultraviolet wavelength is 254nm, the light-catalyzed reaction time of described PBBC waste water is 2 ~ 3 hours, and water outlet uses charcoal absorption.
(5) ion-exchange demineralization: the waste water that step (4) obtains carries out ion-exchange demineralization by ion exchange resin.
As the preferred technical scheme of one, the types of spawn in described ABR reaction tank is ECM compound Facultative Halophiles.
As the preferred technical scheme of one, the ion exchange resin in described step (5) by storng-acid cation exchange resin and strongly basic anion exchange resin according to 1: 1.5 mixed in molar ratio obtain.
As further preferred technical scheme, described in be 001 × 7 type storng-acid cation exchange resin, described strongly basic anion exchange resin is 201 × 7 type strongly basic anion exchange resins.
As further preferred technical scheme again, the described ion-exchange demineralization time is 1 ~ 2h.
As the preferred technical scheme of one, during described light-catalyzed reaction, the flow velocity of described PBBC waste water is 2 ~ 4m
3/ h.
As a kind of technical scheme of improvement, described ABR reaction tank is divided into separately independently at least 8 ABR reaction tanks, by the waste water after described light-catalyzed reaction at 25 ~ 30 DEG C, at least 8 ABR reaction tanks described in flowing through successively are altogether 20 ~ 40h in the reaction times of described at least 8 ABR reaction tanks.
Owing to have employed technique scheme, the invention has the beneficial effects as follows:
The present invention is used for the biochemistry-photochemical catalysis advanced water treatment method of PBBC waste water, by PBBC waste water after pretreatment, first through preposition light-catalyzed reaction, again through biochemical treatment, and then through degree of depth photocatalysis treatment, finally by desalination, for in PBBC waste water biodegradability difference and the phenol of high-content, under the prerequisite as far as possible reducing the light-catalyzed reaction residence time, through the photochemical catalytic oxidation open loop of preposition light-catalyzed reaction, significantly improve BOD in waste water
5/ CODcr ratio, reduce the load of biochemical reaction step, improve biochemical reaction effect, again through degree of depth light-catalyzed reaction after biochemical reaction, the microorganism that the biochemical part mixed in biochemical system water outlet produces, can process thoroughly in degree of depth photochemical catalysis part, almost can kill all microorganisms, simultaneously the organism of degrading still failed for biochemistry part and to be obtained the oxidative degradation of the degree of depth by degree of depth photochemical catalysis, in two-part photocatalysis treatment, do not produce any secondary pollution, toxic organic compound is CO by mineralising completely
2with H
2o.
ABR reaction tank of the present invention is divided into separately independently at least 8 ABR reaction tanks, at least 8 ABR reaction tanks described in waste water after light-catalyzed reaction is flowed through successively, through the biochemical reaction of each step, organic content kind in waste water all changes, therefore the water quality of each biochemistry pool is different, there is the respective dominant bacteria of applicable water quality, therefore can obviously improve processing efficiency and treatment effect.
The present invention is when ion-exchange demineralization, and the mol ratio of yin and yang resin is preferably 1.5:1, in effective removal water while zwitterion, effectively prevents water outlet acidity excessively strong.
Biochemical process is combined with photochemical catalysis technique by the present invention, by light-catalysed pre-treatment, improve wastewater biodegradability, formed and have complementary advantages, reach the advanced treatment effect to waste water, any medicament is not added in whole service process, secondary pollution can not be caused to water quality, good waste water treatment effect, and the optical processing time is short, greatly reduces running cost, in the effluent quality of the PBBC waste water after process of the present invention, CODcr is 20 ~ 240mg/L, chloride ion content≤700mg/L, pH value is 7.5 ~ 8.5, in weakly alkaline.
Embodiment
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Embodiment 1
Pending former water basic condition is: PBBC waste water, main containing phenol, tetrabromo-bisphenol (TBBA) and minute quantity methylene dichloride and triethylamine in waste water.Wastewater pH is 6.5 ~ 7.5, COD value 2500mg/L, BOD
5/ CODcr is 0.26, and chloride ion content is higher, at 4000mg/L, belongs to high toxicity height salt used water difficult to degradate.
By PBBC waste water filtering, except the suspended solids thing in anhydrating, simultaneously also can the organism of remove portion.At room temperature, pretreated PBBC waste water is reacted under ultraviolet katalysis, working load has the nickel screen of titanium dioxide as photocatalyst, described ultraviolet wavelength is 254nm, described PBBC waste water flows through the photo catalysis reactor being provided with catalyzer nickel screen and ultraviolet lamp tube, the light-catalyzed reaction time flowed through is 1.5 hours, and the pH value that light-catalyzed reaction terminates rear described PBBC waste water is 7 ~ 8.
Waste water after light-catalyzed reaction is entered ABR reaction tank at 25 DEG C, described ABR reaction tank is divided into separately independently 8 ABR reaction tanks, waste water after described light-catalyzed reaction is flowed through successively 8 ABR reaction tanks, have altogether as 25h in the reaction times of 8 ABR reaction tanks, types of spawn in ABR reaction tank is ECM compound Facultative Halophiles, reaction terminates laggard row aerobic treatment, and temperature is increased to 28 DEG C, continues aerated reaction 15h.
Waste water after biochemical treatment is reacted again under ultraviolet katalysis, working load has the nickel screen of titanium dioxide as photocatalyst, described ultraviolet wavelength is 254nm, described PBBC waste water flows through the photo catalysis reactor being provided with catalyzer nickel screen and ultraviolet lamp tube, the light-catalyzed reaction time flowed through is 2 hours, and water outlet uses charcoal absorption.
Finally, in waste water, add ion exchange resin and carry out ion-exchange demineralization.
After preposition photocatalysis treatment, the CODcr of water outlet is 2450mg/L, BOD
5/ CODcr is 0.35, and pH value does not have considerable change, is 7 ~ 8; ABR reactor water outlet CODcr is 1700mg/L, water outlet CODcr 550mg/L after aerobic treatment; After penetration depth photocatalysis treatment and ion exchange resin desalination, final effluent index is CODcr 240mg/L, and chloride ion content 700mg/L, pH are 7.5 ~ 8.5.
Embodiment 2
Pending former water basic condition is: PBBC waste water, main containing phenol, tetrabromo-bisphenol (TBBA) and minute quantity methylene dichloride and triethylamine in waste water.Wastewater pH is 6.5 ~ 7.5, COD value 2500mg/L, BOD
5/ CODcr is 0.26, and chloride ion content is higher, at 4000mg/L, belongs to high toxicity height salt used water difficult to degradate.
By PBBC waste water filtering, except the suspended solids thing in anhydrating, simultaneously also can the organism of remove portion.At room temperature, pretreated PBBC waste water is reacted under ultraviolet katalysis, working load has the nickel screen of titanium dioxide as photocatalyst, described ultraviolet wavelength is 254nm, described PBBC waste water flows through the photo catalysis reactor being provided with catalyzer nickel screen and ultraviolet lamp tube, and the flow velocity of described PBBC waste water is 2.5m
3/ h, the light-catalyzed reaction time flowed through is 3 hours, and the pH value that light-catalyzed reaction terminates rear described PBBC waste water is 7 ~ 8.
Waste water after light-catalyzed reaction is entered ABR reaction tank at 25 ~ 30 DEG C, described ABR reaction tank is divided into respective 8 ABR reaction tanks, waste water after described light-catalyzed reaction is flowed through successively 8 ABR reaction tanks, have altogether as 32h in the reaction times of 8 ABR reaction tanks, types of spawn in ABR reaction tank is ECM compound Facultative Halophiles, reaction terminates laggard row aerobic treatment, and temperature is increased to 32 DEG C, continues aerated reaction 20h.
Waste water after biochemical treatment is reacted again under ultraviolet katalysis, working load has the nickel screen of titanium dioxide as photocatalyst, described ultraviolet wavelength is 254nm, described PBBC waste water flows through the photo catalysis reactor being provided with catalyzer nickel screen and ultraviolet lamp tube, and the flow velocity of described PBBC waste water is 3m
3/ h, the light-catalyzed reaction time flowed through is 3 hours, and water outlet uses charcoal absorption.
Finally, in waste water, add ion exchange resin carry out ion-exchange demineralization, ion exchange resin by 001 × 7 type storng-acid cation exchange resin and 201 × 7 type strongly basic anion exchange resins according to 1: 1.5 mixed in molar ratio obtain, the ion-exchange demineralization time is 1h.
After preposition photocatalysis treatment, the CODcr of water outlet is 2200mg/L, BOD
5/ CODcr is 0.54, and pH value does not have considerable change, is 7 ~ 8; ABR reactor water outlet CODcr is 1800mg/L, water outlet CODcr 350mg/L after aerobic treatment; After penetration depth photocatalysis treatment and ion exchange resin desalination, final effluent index is CODcr 40mg/L, and chloride ion content 230mg/L, pH are 7 ~ 8, reaches sewage discharge one-level A standard.
Embodiment 3
Pending former water basic condition is: PBBC waste water, main containing phenol, tetrabromo-bisphenol (TBBA) and minute quantity methylene dichloride and triethylamine in waste water.Wastewater pH is 6.5 ~ 7.5, COD value 2500mg/L, BOD
5/ CODcr is 0.26, and chloride ion content is higher, at 4000mg/L, belongs to high toxicity height salt used water difficult to degradate.
By PBBC waste water filtering, except the suspended solids thing in anhydrating, simultaneously also can the organism of remove portion.At room temperature, pretreated PBBC waste water is reacted under ultraviolet katalysis, working load has the nickel screen of titanium dioxide as photocatalyst, described ultraviolet wavelength is 254nm, described PBBC waste water flows through the photo catalysis reactor being provided with catalyzer nickel screen and ultraviolet lamp tube, and the flow velocity of described PBBC waste water is 3.5m
3/ h, the light-catalyzed reaction time flowed through is 2.5 hours, and the pH value that light-catalyzed reaction terminates rear described PBBC waste water is 7 ~ 8.
Waste water after light-catalyzed reaction is entered ABR reaction tank at 28 DEG C, described ABR reaction tank is divided into separately independently 8 ABR reaction tanks, waste water after described light-catalyzed reaction is flowed through successively described 8 ABR reaction tanks, have altogether as 40h in the reaction times of 8 ABR reaction tanks, types of spawn in ABR reaction tank is ECM compound Facultative Halophiles, reaction terminates laggard row aerobic treatment, and temperature is increased to 30 DEG C, continues aerated reaction 24h.
Waste water after biochemical treatment is reacted again under ultraviolet katalysis, working load has the nickel screen of titanium dioxide as photocatalyst, described ultraviolet wavelength is 254nm, described PBBC waste water flows through the photo catalysis reactor being provided with catalyzer nickel screen and ultraviolet lamp tube, and the flow velocity of described PBBC waste water is 3m
3/ h, the light-catalyzed reaction time flowed through is 2.5 hours, and water outlet uses charcoal absorption.
Finally, in waste water, add ion exchange resin carry out ion-exchange demineralization, ion exchange resin by 001 × 7 type storng-acid cation exchange resin and 201 × 7 type strongly basic anion exchange resins according to 1: 1.5 mixed in molar ratio obtain, the ion-exchange demineralization time is 1.5h.
After preposition photocatalysis treatment, the CODcr of water outlet is 2200mg/L, BOD
5/ CODcr is 0.54, and pH value does not have considerable change, is 7 ~ 8; ABR reactor water outlet CODcr is 1600mg/L, water outlet CODcr 320mg/L after aerobic treatment; After penetration depth photocatalysis treatment and ion exchange resin desalination, final effluent index is CODcr 20mg/L, and chloride ion content 220mg/L, pH are 7 ~ 8, reaches sewage discharge one-level A standard.
Claims (7)
1., for biochemistry-photochemical catalysis advanced water treatment method of PBBC waste water, it is characterized in that comprising following steps:
(1) pre-treatment: by PBBC waste water filtering, the pH value of described PBBC waste water is 6.5 ~ 7.5;
(2) preposition photocatalysis treatment: pretreated PBBC waste water is reacted under ultraviolet katalysis, working load has the nickel screen of titanium dioxide as photocatalyst, described ultraviolet wavelength is 254nm, the light-catalyzed reaction time of described PBBC waste water is 1.5 ~ 3 hours, and the pH value that light-catalyzed reaction terminates rear described PBBC waste water is 7 ~ 8;
(3) biochemical treatment: by the waste water after light-catalyzed reaction at 25 ~ 30 DEG C, reacts 20 ~ 40h in ABR reaction tank, and reaction terminates laggard row aerobic treatment, and temperature is increased to 28 ~ 32 DEG C, continues aerated reaction 12 ~ 24h;
(4) degree of depth photocatalysis treatment: the waste water that step (3) obtains is reacted again under ultraviolet katalysis, working load has the nickel screen of titanium dioxide as photocatalyst, described ultraviolet wavelength is 254nm, the light-catalyzed reaction time of described PBBC waste water is 2 ~ 3 hours, and water outlet uses charcoal absorption;
(5) ion-exchange demineralization: the waste water that step (4) obtains carries out ion-exchange demineralization by ion exchange resin.
2., as claimed in claim 1 for the biochemistry-photochemical catalysis advanced water treatment method of PBBC waste water, it is characterized in that: the types of spawn in described ABR reaction tank is ECM compound Facultative Halophiles.
3., as claimed in claim 1 for the biochemistry-photochemical catalysis advanced water treatment method of PBBC waste water, it is characterized in that: the ion exchange resin in described step (5) be by storng-acid cation exchange resin and strongly basic anion exchange resin according to 1: 1.5 mixed in molar ratio obtain.
4. as claimed in claim 3 for the biochemistry-photochemical catalysis advanced water treatment method of PBBC waste water, it is characterized in that: described storng-acid cation exchange resin is 001 × 7 type storng-acid cation exchange resin, described strongly basic anion exchange resin is 201 × 7 type strongly basic anion exchange resins.
5., as claimed in claim 3 for the biochemistry-photochemical catalysis advanced water treatment method of PBBC waste water, it is characterized in that: the described ion-exchange demineralization time is 1 ~ 2h.
6., as claimed in claim 1 for the biochemistry-photochemical catalysis advanced water treatment method of PBBC waste water, it is characterized in that: during described light-catalyzed reaction, the flow velocity of described PBBC waste water is 2 ~ 4m
3/ h.
7. the biochemistry for PBBC waste water as described in claim as arbitrary in claim 1 to 6-photochemical catalysis advanced water treatment method, it is characterized in that: described ABR reaction tank is divided into separately independently at least 8 ABR reaction tanks, by the waste water after described light-catalyzed reaction at 25 ~ 30 DEG C, at least 8 ABR reaction tanks described in flowing through successively are 20 ~ 40h in the reaction times of described at least 8 ABR reaction tanks.
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