CN101962214B - Method for treating cyanide-containing waste water - Google Patents
Method for treating cyanide-containing waste water Download PDFInfo
- Publication number
- CN101962214B CN101962214B CN2009100552665A CN200910055266A CN101962214B CN 101962214 B CN101962214 B CN 101962214B CN 2009100552665 A CN2009100552665 A CN 2009100552665A CN 200910055266 A CN200910055266 A CN 200910055266A CN 101962214 B CN101962214 B CN 101962214B
- Authority
- CN
- China
- Prior art keywords
- cyanide wastewater
- waste water
- treatment methods
- electrolyzer
- negative plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002351 wastewater Substances 0.000 title claims abstract description 33
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 10
- 150000002825 nitriles Chemical class 0.000 claims abstract description 10
- 230000016615 flocculation Effects 0.000 claims abstract description 7
- 238000005189 flocculation Methods 0.000 claims abstract description 7
- 230000003647 oxidation Effects 0.000 claims description 10
- 238000007254 oxidation reaction Methods 0.000 claims description 10
- 238000005273 aeration Methods 0.000 claims description 9
- 238000000354 decomposition reaction Methods 0.000 claims description 6
- 230000008021 deposition Effects 0.000 claims description 6
- 238000006722 reduction reaction Methods 0.000 claims description 6
- 150000003384 small molecules Chemical class 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910002804 graphite Inorganic materials 0.000 claims description 5
- 239000010439 graphite Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 abstract description 3
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 238000006731 degradation reaction Methods 0.000 abstract description 2
- 230000000593 degrading effect Effects 0.000 abstract description 2
- 239000002244 precipitate Substances 0.000 abstract 2
- 230000000694 effects Effects 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 229910017112 Fe—C Inorganic materials 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000003541 multi-stage reaction Methods 0.000 description 4
- 238000006479 redox reaction Methods 0.000 description 4
- 230000002195 synergetic effect Effects 0.000 description 4
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 230000006399 behavior Effects 0.000 description 1
- 230000034994 death Effects 0.000 description 1
- 231100000517 death Toxicity 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- IFXGUZKGCKIMQN-UHFFFAOYSA-N oxalonitrile;hydrate Chemical compound O.N#CC#N IFXGUZKGCKIMQN-UHFFFAOYSA-N 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention relates to a method for treating cyanide-containing waste water, which comprises: introducing the cyanide-containing waste water into an electrolyzer for electrolysis; decomposing, oxidizing and reducing the cyanides, CN- and NH3-N in waste water and breaking and degrading the cyanides, CN- and NH3-N in waste water into micromolecular or insoluble precipitates; and removing the precipitates by flocculation. Compared with the prior art, the method has the advantages of avoiding adding any other chemical, achieving high degradation effect and the like.
Description
Technical field
The present invention relates to a kind of cyanogen water treatment that contains, especially relate to a kind of treatment Methods of Cyanide Wastewater.
Background technology
Environment protection receives generally and paying attention to as a big problem of the world today.Along with industrial expansion, the three wastes that in industrial production, produce are also more and more, have cyanides in many trade effluents; Cyanides is poisonous, in case lake, the bay of row's water inlet body, especially sluggish flow; Cause pollution easily, cause plant-animal or even human injures and deaths.Cyanide wastewater has caused the attention of environmental protection field and global range to the influence of environment, China to cyanide wastewater discharging worked out strict emission control standards more.But cyanide wastewater is the industrial sewage of one type of difficult degradation, and outstanding behaviours is poisonous at cyanide wastewater, and biodegradability is relatively poor.
Summary of the invention
The object of the invention is exactly for the defective that overcomes above-mentioned prior art existence a kind of treatment Methods of Cyanide Wastewater that need not increase other pharmaceutical chemicals, good degrading effect to be provided.
The object of the invention can be realized through following technical scheme: a kind of treatment Methods of Cyanide Wastewater is characterized in that this method feeds electrolyzer with cyanide wastewater earlier and carries out electrolysis, with the nitrile in the waste water, CN-and NH wherein
3Thereby-N decomposition, oxidation, reduction, chain rupture, be degraded into small molecules or produce the insolubles deposition and remove through flocculation.
The effective volume of described electrolyzer is 200L～300L.
Described electrolyzer is formed positive plate with 10～20 graphite cakes, is negative plate with the stainless steel plate, and the positive/negative plate spacing is 2～5cm, adopts high frequency pulse power supply that direct current is provided, and adopts direct connection portable air compressor aeration.
The specification of described positive plate and negative plate is (30～60) cm * (50～70) cm.
The nominal volume flow of described direct connection portable air compressor is 0.10～0.15m
3/ min.
Compared with prior art, the present invention adopts the self-control electrolyzer with the nitrile in the waste water, CN-and NH wherein
3The synergistic effect of reaction such as a series of composite reactions, redox reaction, aeration oxidation takes place through the Fe-C electrolysis in-N etc., thereby further decomposition, oxidation, reduction, chain rupture, is degraded into small molecules or produces the insolubles deposition and remove through flocculation.This step can drop to cyanogen in the waste water about 60mg/L from 2000mg/L, handles this concentration waste water, and power consumption per ton is no more than 10 degree approximately, and need not increase other pharmaceutical chemicals, has clear superiority than traditional method.
Embodiment
Below in conjunction with specific embodiment the present invention is elaborated.
Embodiment 1
A kind of treatment Methods of Cyanide Wastewater, this method feed electrolyzer with cyanide wastewater earlier and carry out electrolysis, with the nitrile in the waste water, CN-and NH wherein
3The synergistic effect of reaction such as a series of composite reactions, redox reaction, aeration oxidation takes place through the Fe-C electrolysis in-N etc., thereby further decomposition, oxidation, reduction, chain rupture, is degraded into small molecules or produces the insolubles deposition and remove through flocculation.
The effective volume of described electrolyzer is 250L, and electrolyzer is formed positive plate with 15 graphite cakes, is negative plate with the stainless steel plate; The positive/negative plate spacing is 3cm; The specification of positive plate and negative plate is 50cm * 60cm, adopts high frequency pulse power supply that direct current is provided, and adopting the nominal volume flow is 0.11m
3The direct connection portable air compressor aeration of/min.
Embodiment 2
A kind of treatment Methods of Cyanide Wastewater, this method feed electrolyzer with cyanide wastewater earlier and carry out electrolysis, with the nitrile in the waste water, CN-and NH wherein
3The synergistic effect of reaction such as a series of composite reactions, redox reaction, aeration oxidation takes place through the Fe-C electrolysis in-N etc., thereby further decomposition, oxidation, reduction, chain rupture, is degraded into small molecules or produces the insolubles deposition and remove through flocculation.
The effective volume of described electrolyzer is 200L, and electrolyzer is formed positive plate with 10 graphite cakes, is negative plate with the stainless steel plate; The positive/negative plate spacing is 2cm; The specification of positive plate and negative plate is 30cm * 50cm, adopts high frequency pulse power supply that direct current is provided, and adopting the nominal volume flow is 0.10m
3The direct connection portable air compressor aeration of/min.
Embodiment 3
A kind of treatment Methods of Cyanide Wastewater, this method feed electrolyzer with cyanide wastewater earlier and carry out electrolysis, with the nitrile in the waste water, CN-and NH wherein
3The synergistic effect of reaction such as a series of composite reactions, redox reaction, aeration oxidation takes place through the Fe-C electrolysis in-N etc., thereby further decomposition, oxidation, reduction, chain rupture, is degraded into small molecules or produces the insolubles deposition and remove through flocculation.
The effective volume of described electrolyzer is 300L, and electrolyzer is formed positive plate with 20 graphite cakes, is negative plate with the stainless steel plate; The positive/negative plate spacing is 5cm; The specification of positive plate and negative plate is 60cm * 70cm, adopts high frequency pulse power supply that direct current is provided, and adopting the nominal volume flow is 0.15m
3The direct connection portable air compressor aeration of/min.
Claims (4)
1. a treatment Methods of Cyanide Wastewater is characterized in that, this method feeds electrolyzer with cyanide wastewater earlier and carries out electrolysis, with the nitrile in the waste water, CN-and NH wherein
3Thereby-N decomposition, oxidation, reduction, chain rupture, be degraded into small molecules or produce the insolubles deposition and remove through flocculation;
Described electrolyzer is formed positive plate with 10～20 graphite cakes, is negative plate with the stainless steel plate, and the positive/negative plate spacing is 2～5cm, adopts high frequency pulse power supply that direct current is provided, and adopts direct connection portable air compressor aeration.
2. a kind of treatment Methods of Cyanide Wastewater according to claim 1 is characterized in that, the effective volume of described electrolyzer is 200L～300L.
3. a kind of treatment Methods of Cyanide Wastewater according to claim 1 is characterized in that, the specification of described positive plate and negative plate is (30～60) cm * (50～70) cm.
4. a kind of treatment Methods of Cyanide Wastewater according to claim 1 is characterized in that, the nominal volume flow of described direct connection portable air compressor is 0.10～0.15m
3/ min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100552665A CN101962214B (en) | 2009-07-23 | 2009-07-23 | Method for treating cyanide-containing waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100552665A CN101962214B (en) | 2009-07-23 | 2009-07-23 | Method for treating cyanide-containing waste water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101962214A CN101962214A (en) | 2011-02-02 |
| CN101962214B true CN101962214B (en) | 2012-11-07 |
Family
ID=43515306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100552665A Expired - Fee Related CN101962214B (en) | 2009-07-23 | 2009-07-23 | Method for treating cyanide-containing waste water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101962214B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103663630B (en) * | 2012-09-10 | 2015-09-16 | 中国石油化工股份有限公司 | A kind of acrylic nitrile waste water electrolytic processing method |
| CN104193121B (en) * | 2014-09-27 | 2015-10-28 | 长春黄金研究院 | A kind of cyanide wastewater treatment process |
| CN107417016B (en) * | 2017-04-17 | 2020-01-24 | 深圳清华大学研究院 | Advanced treatment system and method for cyanide-containing wastewater |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85102690A (en) * | 1985-04-02 | 1986-10-01 | 华东化工学院 | A kind of method of administering cyanide wastewater |
| CN1141886A (en) * | 1996-06-11 | 1997-02-05 | 高大明 | Technology for treatment of waste liquid containing cyanogen by ion exchange method |
| CN1562793A (en) * | 2004-03-17 | 2005-01-12 | 四川师范大学 | Method for treating wastewater containing cyanogen |
-
2009
- 2009-07-23 CN CN2009100552665A patent/CN101962214B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85102690A (en) * | 1985-04-02 | 1986-10-01 | 华东化工学院 | A kind of method of administering cyanide wastewater |
| CN1141886A (en) * | 1996-06-11 | 1997-02-05 | 高大明 | Technology for treatment of waste liquid containing cyanogen by ion exchange method |
| CN1562793A (en) * | 2004-03-17 | 2005-01-12 | 四川师范大学 | Method for treating wastewater containing cyanogen |
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| Publication number | Publication date |
|---|---|
| CN101962214A (en) | 2011-02-02 |
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Granted publication date: 20121107 |