CN1962476A - Method for removing trace phosphorus by coagulant - Google Patents
Method for removing trace phosphorus by coagulant Download PDFInfo
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- CN1962476A CN1962476A CN 200610144298 CN200610144298A CN1962476A CN 1962476 A CN1962476 A CN 1962476A CN 200610144298 CN200610144298 CN 200610144298 CN 200610144298 A CN200610144298 A CN 200610144298A CN 1962476 A CN1962476 A CN 1962476A
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- CN
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- Prior art keywords
- coagulant
- water
- phosphorus
- potassium permanganate
- cod
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 239000011574 phosphorus Substances 0.000 title claims abstract description 70
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 70
- 239000000701 coagulant Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000012286 potassium permanganate Substances 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 238000001556 precipitation Methods 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims abstract description 10
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 9
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 9
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 9
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- 238000001914 filtration Methods 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 3
- 230000015271 coagulation Effects 0.000 abstract description 5
- 238000005345 coagulation Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 239000002384 drinking water standard Substances 0.000 abstract description 3
- 238000005202 decontamination Methods 0.000 abstract 1
- 230000003588 decontaminative effect Effects 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 238000004062 sedimentation Methods 0.000 abstract 1
- 239000010802 sludge Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 15
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 12
- 238000013019 agitation Methods 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 9
- 229910052742 iron Inorganic materials 0.000 description 9
- 230000002599 biostatic effect Effects 0.000 description 8
- 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 description 5
- 239000003651 drinking water Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000008399 tap water Substances 0.000 description 5
- 235000020679 tap water Nutrition 0.000 description 5
- 235000020188 drinking water Nutrition 0.000 description 4
- 244000005700 microbiome Species 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000000721 bacterilogical effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000012206 bottled water Nutrition 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
助凝去除水中痕量磷的方法属环境保护领域。加大混凝药剂的投量可以一定程度地提高除磷效率，但由此导致药剂费用的大幅提高。本发明在对城市水源水处理时，于投加常规混凝药剂前投加深度除磷助凝剂，该助凝剂由高锰酸钾与硫酸亚铁按等当量反应而成，现场配制，现场投加，以高锰酸钾投量计，为2－6mg/L，经快速搅拌3－5min后，仅需加入20％－40％的常规混凝剂，经常规混合、反应、沉淀及过滤。本发明除污染效能优异，投加少量的深度除磷助凝剂就能够起助凝除磷的效果，减少了60％－80％的混凝剂投加量，节约了混凝剂的费用，降低了沉淀池污泥的生成量，并使处理水的相关指标达到国家生活饮用水标准，不需要改变原有水处理流程，简便易行，经济实用，具有广谱适应性。The method for coagulation-assisted removal of trace phosphorus in water belongs to the field of environmental protection. Increasing the dosage of coagulant agent can improve the phosphorus removal efficiency to a certain extent, but this will lead to a substantial increase in the cost of the agent. In the present invention, when treating urban water sources, before adding conventional coagulants, a deep phosphorus removal coagulant is added. The coagulant is formed by the equivalent reaction of potassium permanganate and ferrous sulfate, and is prepared on site. On-site dosing, based on the dosage of potassium permanganate, is 2-6 mg/L. After rapid stirring for 3-5 minutes, only 20%-40% of conventional coagulants need to be added. After conventional mixing, reaction, precipitation and filter. The invention has excellent decontamination efficiency, adding a small amount of deep dephosphorization and coagulant aid can achieve the effect of aiding coagulation and dephosphorization, reducing the dosage of coagulant by 60%-80%, saving the cost of coagulant, It reduces the amount of sludge generated in the sedimentation tank, and makes the relevant indicators of the treated water meet the national drinking water standard without changing the original water treatment process. It is simple, easy, economical and practical, and has broad-spectrum adaptability.
Description
Technical field
The invention belongs to field of environment protection, particularly a kind of new technology with fixed attention that helps of city water factory feedwater processing.
Background technology
Pointed out during phosphorus is to tap water since the long restriction of bacteriological aftergrowth from the Mlettinen of Finland in 1996, launch rapidly about the research of phosphorus and the sexual intercourse of potable water network Biostatic.Research points out that for most of tap water, when total phosphorus concentration is lower than 1 μ g/l, phosphorus will become the limiting factor of microorganism growth in the water.Therefore, in actual water technology, take measures to reduce phosphorus content in the water as much as possible, will reduce the regenerative power of bacterium in the water greatly, improve the biologically stable of tap water.
Yet, the data that take a broad survey also show, at present behind the handling technology of water supply of routine, phosphorus content can't satisfy the requirement of Biostatic in most of pipe network water, for I, II class good water sources water, conventional water technology can drop to 5ug/L with the total phosphorous in the water, and the limiting factor of microorganism growth still differs greatly in the water but this and phosphorus become, and for the source water of heavy contamination, phosphorus content also can be higher in the water outlet.
Because mainly by being removed with coagulating agent formation alumen ustum, precipitation, the effect of coagulation for phosphorus removal is most important to the phosphorus content in the control water outlet for the phosphorus in the tap water.Existing discovering, the throwing amount that strengthens coagulated agent can improve dephosphorization efficiency by using to a certain extent, but the significantly raising that causes medicament expense to be used thus, for making water factory neither strengthen the purpose that investment reaches the effluent quality Biostatic again, be necessary to seek a kind of method of effective enhanced coagulation phosphor-removing effect.
Summary of the invention:
At the present situation of conventional coagulating agent removal underwater trace phosphorus poor effect, the present invention studies successfully a kind of economical and effective, moves the easy method of removing underwater trace phosphorus with fixed attention that helps.
The invention provides a kind of method of removing underwater trace phosphorus with fixed attention that helps, it is characterized in that, to the urban water resource water treatment time, before adding conventional coagulated agent, add the deep phosphorous removal coagulant aids, this coagulant aids is formed by the equivalent reaction by potassium permanganate and ferrous sulfate, on-the-spot preparation, the scene adds, concrete throwing amount is relevant with pending water quality, in potassium permanganate throwing amount, is 2-6mg/L, after stirring 3-5min fast, only need add the conventional coagulating agent of conventional throwing amount 20%-40%, mix through routine, reaction, after precipitation and the filtration, promptly obtain to satisfy drinking water standard, the Drinking Water of while deep phosphorous removal.
Gordian technique of the present invention is:
1, the deep phosphorous removal coagulant aids is formed by the equivalent reaction by potassium permanganate and ferrous sulfate, on-the-spot preparation, and the scene adds, and the equivalent reaction is as follows:
KMnO
4+3FeSO
4+7H
2O→MnO
2+3Fe(OH)
3+3SO
4 2-+2K
++5H
+
2, the concrete throwing amount of deep phosphorous removal coagulant aids is relevant with pending water quality, and in potassium permanganate throwing amount, definite principle of throwing amount: to drinking water source, if contaminated more serious, potassium permanganate is thrown and measured higher value (5-6mg/L); To protecting I, II class water source preferably, potassium permanganate is thrown and is measured smaller value (2-4mg/L);
3, the deep phosphorous removal coagulant aids needs to add before conventional coagulating agent adds, stir 3-5min fast after, add conventional coagulating agent again.
Water treatment technological process of the present invention is identical with the conventional water treatment process flow process of city tap-water factory, promptly under abundant agitation condition, in the water of source, add after the deep phosphorous removal coagulant aids stirs 3-5min fast, add conventional coagulating agent through mixing, flocculation reaction, precipitation, filtration, can obtain the Drinking Water of deep phosphorous removal.
Advantage of the present invention:
1, depollution usefulness excellence, add a spot of deep phosphorous removal coagulant aids and just can work the effect that helps with fixed attention dephosphorization, reduced the coagulant charging quantity of 60%-80%, saved the expense of coagulating agent, reduced the growing amount of settling tank mud, and the index of correlation that makes treating water reaches national drinking water standard GB5749-1985, also meets Ministry of Health's " Drinking Water hygienic practice " (defending the method prison sends out [2001] No. 161);
2, adopt deep phosphorous removal coagulant aids enhanced coagulation, do not need to change original water treatment process, simple and easy to do, economical and practical, both can be used for newly-built water factory, also can be used for having built water factory;
3, can change the coagulant aids dosage flexibly to satisfy different areas water requirement according to parameters such as raw water quality, the processing water yields, have wide spectrum adaptability.
Embodiment:
Below by example the present invention is elaborated.
Embodiment 1:
In the present embodiment, former water total phosphorus is 190ug/L, and dissolved phosphorus is 170ug/L, turbidity 12.5NTU, COD
Mn8.6mg/L, fully in former water, adding the deep phosphorous removal coagulant aids under the agitation condition, this coagulant aids is made of 2mg/L potassium permanganate and 6mg/L ferrous sulfate, after stirring 3min fast, add conventional aluminum sulfate coagulant 4mg/L, after routine is mixed, reacts, is precipitated and filters, delivery turbidity 0.5NTU, COD
Mn1.6mg/L total phosphorus and dissolved phosphorus all do not detect, other indexs have also reached the standard of GB5749-1985.
Comparative Examples 1:
In this Comparative Examples, former water total phosphorus is 190ug/L, and dissolved phosphorus is 170ug/L, turbidity 12.5NTU, COD
Mn8.6mg/L.Fully adding the different conventional aluminum sulfate coagulants of measuring under the agitation condition, detecting through routine mixing, reaction, precipitation and after filtering.When Tai-Ace S 150 throwing amount is 4mg/L, delivery turbidity 2.5NTU, COD
Mn3.0mg/L, total phosphorus 78ug/L, dissolved phosphorus 56ug/L; When Tai-Ace S 150 throwing amount reaches 12mg/L, delivery turbidity 0.5NTU, COD
Mn2.2mg/L other indexs have reached the standard of GB5749-1985, but total phosphorus 8.5ug/L, dissolved phosphorus 5.6ug/L does not reach the limit value of effluent quality Biostatic.
Embodiment 2:
In the present embodiment, former water total phosphorus is 110ug/L, and dissolved phosphorus is 89ug/L, turbidity 9.5NTU, COD
Mn5.6mg/L, fully in former water, adding the deep phosphorous removal coagulant aids under the agitation condition, this coagulant aids is made of 2mg/L potassium permanganate and 6mg/L ferrous sulfate, after stirring 4min fast, add conventional coagulating agent aluminum chloride 5mg/L, after routine is mixed, reacts, is precipitated and filters, COD
Mn1.5mg/L delivery turbidity, total phosphorus and dissolved phosphorus all do not detect, other indexs have also reached the standard of GB5749-1985.
Comparative Examples 2:
In this Comparative Examples, former water total phosphorus is 110ug/L, and dissolved phosphorus is 89ug/L, turbidity 9.5NTU, COD
Mn5.6mg/L.Fully adding the different conventional coagulating agent aluminum chloride of measuring under the agitation condition, detecting through routine mixing, reaction, precipitation and after filtering.When aluminum chloride throwing amount is 5mg/L, delivery turbidity 2.0NTU, COD
Mn3.5mg/L, total phosphorus 64ug/L, dissolved phosphorus 23ug/L; When Tai-Ace S 150 throwing amount reaches 12mg/L, delivery turbidity 1.0NTU, COD
Mn2.5mg/L other indexs have reached the standard of GB5749-1985, but total phosphorus 10.5ug/L, dissolved phosphorus 4.6ug/L does not reach the limit value of effluent quality Biostatic.
Embodiment 3:
In the present embodiment, the turbidity of former water is 9.7NTU, and total phosphorus is about 60ug/L, and dissolved phosphorus is 35ug/L, COD
Mn4.8mg/L, fully in former water, adding the deep phosphorous removal coagulant aids under the agitation condition, this coagulant aids is made of 2mg/L potassium permanganate and 6mg/L ferrous sulfate, after stirring 3min fast, add conventional coagulating agent iron(ic) chloride 4mg/L, after routine is mixed, reacts, is precipitated and filters, COD
Mn1.2mg/L delivery turbidity, total phosphorus and dissolved phosphorus all do not detect, other indexs have also reached the standard of GB5749-1985.
Comparative Examples 3:
In this Comparative Examples, the turbidity of former water is 9.7NTU, and total phosphorus is about 60ug/L, and dissolved phosphorus is 35ug/L, COD
Mn4.8mg/L.Fully adding the different conventional coagulating agent iron(ic) chloride of measuring under the agitation condition, detecting through routine mixing, reaction, precipitation and after filtering.When iron(ic) chloride throwing amount is 4mg/L, delivery turbidity 4.5NTU, COD
Mn3.5mg/L, total phosphorus 48ug/L, dissolved phosphorus 20ug/L; When iron(ic) chloride throwing amount reaches 15mg/L, delivery turbidity 1.0NTU, COD
Mn2.0mg/L other indexs have reached the standard of GB5749-1985, but total phosphorus 10.2ug/L, dissolved phosphorus 7.6ug/L does not reach the limit value of effluent quality Biostatic.
Embodiment 4:
In the present embodiment, the turbidity of former water is 9.0NTU, and total phosphorus is about 460ug/L, and dissolved phosphorus is 350ug/L, COD
Mn9.8mg/L, fully in former water, adding the deep phosphorous removal coagulant aids under the agitation condition, this coagulant aids is made of 5mg/L potassium permanganate and 15mg/L ferrous sulfate, after stirring 5min fast, add conventional coagulating agent iron(ic) chloride 6mg/L, after routine is mixed, reacts, is precipitated and filters, COD
Mn1.6mg/L, delivery turbidity 0.5, total phosphorus 1.0, dissolved phosphorus does not detect, and other indexs have also reached the standard of GB5749-1985.
Comparative Examples 4:
In this Comparative Examples, the turbidity of former water is 9.0NTU, and total phosphorus is about 460ug/L, and dissolved phosphorus is 350ug/L, COD
Mn9.8mg/L.Fully adding the different conventional coagulating agent iron(ic) chloride of measuring under the agitation condition, detecting through routine mixing, reaction, precipitation and after filtering.When iron(ic) chloride throwing amount is 6mg/L, delivery turbidity 6.5NTU, COD
Mn5.5mg/L, total phosphorus 168ug/L, dissolved phosphorus 132ug/L; When iron(ic) chloride throwing amount reaches 20mg/L, delivery turbidity 1.0NTU, COD
Mn2.8mg/L other indexs have reached the standard of GB5749-1985, but total phosphorus 46.2ug/L, dissolved phosphorus 29.6ug/L does not reach the limit value of effluent quality Biostatic.
Embodiment 5:
In the present embodiment, the turbidity of former water is 13.6NTU, and total phosphorus is about 780ug/L, and dissolved phosphorus is 670ug/L, COD
Mn11.8mg/L, fully in former water, adding the deep phosphorous removal coagulant aids under the agitation condition, this coagulant aids is made of 6mg/L potassium permanganate and 18mg/L ferrous sulfate, after stirring 5min fast, add conventional coagulating agent aluminum chloride 8mg/L, after routine is mixed, reacts, is precipitated and filters, COD
Mn1.7mg/L, delivery turbidity 0.5, total phosphorus 0.8, dissolved phosphorus does not detect, and other indexs have also reached the standard of GB5749-1985.
Comparative Examples 5:
In this Comparative Examples, the turbidity of former water is 13.6NTU, and total phosphorus is about 780ug/L, and dissolved phosphorus is 670ug/L, COD
Mn11.8mg/L, fully adding the different conventional coagulating agent aluminum chloride of measuring under the agitation condition, detect through routine mixing, reaction, precipitation and after filtering.When aluminum chloride throwing amount is 8mg/L, delivery turbidity 8.5NTU, COD
Mn4.5mg/L, total phosphorus 368ug/L, dissolved phosphorus 185ug/L; When iron(ic) chloride throwing amount reaches 20mg/L, delivery turbidity 1.8NTU, COD
Mn3.0mg/L other indexs have reached the standard of GB5749-1985, but total phosphorus 20.2ug/L, dissolved phosphorus 15.7ug/L does not reach the limit value of effluent quality Biostatic.
Claims (1)
1, a kind of method of removing underwater trace phosphorus with fixed attention that helps, it is characterized in that, to the urban water resource water treatment time, add the dephosphorization coagulant aids before adding conventional coagulated agent, this coagulant aids is formed by the equivalent reaction by potassium permanganate and ferrous sulfate, on-the-spot preparation, the scene adds, count 2-6mg/L with potassium permanganate throwing amount, add the conventional coagulating agent of conventional throwing amount 20%-40% after stirring, mixing, reaction, precipitation and filtration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101442989A CN100420637C (en) | 2006-12-01 | 2006-12-01 | Method for coagulation-assisted removal of trace phosphorus in water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101442989A CN100420637C (en) | 2006-12-01 | 2006-12-01 | Method for coagulation-assisted removal of trace phosphorus in water |
Publications (2)
| Publication Number | Publication Date |
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| CN1962476A true CN1962476A (en) | 2007-05-16 |
| CN100420637C CN100420637C (en) | 2008-09-24 |
Family
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|---|---|---|---|
| CNB2006101442989A Expired - Fee Related CN100420637C (en) | 2006-12-01 | 2006-12-01 | Method for coagulation-assisted removal of trace phosphorus in water |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102344191A (en) * | 2010-08-06 | 2012-02-08 | 中国科学院生态环境研究中心 | Method for improving flocculation effect and increasing particle size of flocs through reinforcing heterogeneous coacervation process |
| CN102344180A (en) * | 2010-08-06 | 2012-02-08 | 中国科学院生态环境研究中心 | Adsorption condensation method for removing natural organic matter in water by enhancing micro-interface adsorption |
| CN103848512A (en) * | 2012-11-28 | 2014-06-11 | 苏州市环境保护有限公司 | Metal transformation wastewater total phosphorus removing method based on KMnO4 advanced oxidation, and apparatus thereof |
| CN110745994A (en) * | 2019-11-06 | 2020-02-04 | 天津水务集团有限公司 | Coagulation method suitable for low-turbidity low-organic matter raw water |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1103628A (en) * | 1993-12-11 | 1995-06-14 | 李圭白 | Drinking water purifying technique with compound permanganate medicament |
| FI102160B (en) * | 1996-03-18 | 1998-10-30 | Kemira Oyj | A method for improving the usability of a water treatment chemical and a precipitant |
| JP2002079003A (en) * | 2000-09-08 | 2002-03-19 | Ebara Corp | Inorganic flocculant using highly purified ferric salt and manufacturing method thereof and processing apparatus in water-purification processing |
-
2006
- 2006-12-01 CN CNB2006101442989A patent/CN100420637C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102344191A (en) * | 2010-08-06 | 2012-02-08 | 中国科学院生态环境研究中心 | Method for improving flocculation effect and increasing particle size of flocs through reinforcing heterogeneous coacervation process |
| CN102344180A (en) * | 2010-08-06 | 2012-02-08 | 中国科学院生态环境研究中心 | Adsorption condensation method for removing natural organic matter in water by enhancing micro-interface adsorption |
| CN102344180B (en) * | 2010-08-06 | 2014-05-28 | 中国科学院生态环境研究中心 | Adsorption condensation method for removing natural organic matter in water by enhancing micro-interface adsorption |
| CN103848512A (en) * | 2012-11-28 | 2014-06-11 | 苏州市环境保护有限公司 | Metal transformation wastewater total phosphorus removing method based on KMnO4 advanced oxidation, and apparatus thereof |
| CN103848512B (en) * | 2012-11-28 | 2015-11-25 | 苏州市环境保护有限公司 | A kind of based on KMnO 4the change gold waste water of advanced oxidation removes total phosphorus method and device thereof |
| CN110745994A (en) * | 2019-11-06 | 2020-02-04 | 天津水务集团有限公司 | Coagulation method suitable for low-turbidity low-organic matter raw water |
| CN110745994B (en) * | 2019-11-06 | 2022-05-10 | 天津水务集团有限公司 | Coagulation method suitable for low-turbidity low-organic matter raw water |
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