CN101781002B - Sewage treatment equipment using expanded anode for electrolytically decomposing cyanide - Google Patents
Sewage treatment equipment using expanded anode for electrolytically decomposing cyanide Download PDFInfo
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- CN101781002B CN101781002B CN2010101206605A CN201010120660A CN101781002B CN 101781002 B CN101781002 B CN 101781002B CN 2010101206605 A CN2010101206605 A CN 2010101206605A CN 201010120660 A CN201010120660 A CN 201010120660A CN 101781002 B CN101781002 B CN 101781002B
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- Prior art keywords
- anode
- plate
- cathode
- sewage treatment
- treatment equipment
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- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 239000010865 sewage Substances 0.000 title claims description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 27
- 239000002351 wastewater Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 8
- 238000002955 isolation Methods 0.000 claims abstract description 7
- 238000005273 aeration Methods 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims abstract description 6
- 239000008187 granular material Substances 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 239000010439 graphite Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000005684 electric field Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 238000005868 electrolysis reaction Methods 0.000 abstract description 5
- 239000010405 anode material Substances 0.000 abstract description 2
- 238000004065 wastewater treatment Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 4
- -1 form expanded anode Substances 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- XLJMAIOERFSOGZ-UHFFFAOYSA-N anhydrous cyanic acid Natural products OC#N XLJMAIOERFSOGZ-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000007770 graphite material Substances 0.000 description 2
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 206010019233 Headaches Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 206010003119 arrhythmia Diseases 0.000 description 1
- 230000006793 arrhythmia Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007806 chemical reaction intermediate Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000002265 redox agent Substances 0.000 description 1
- 231100000004 severe toxicity Toxicity 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
本发明涉及一种扩展阳极电解破氰废水处理设备，其组成包括：壳体、阴极板、阳极板、充填于阴阳极板间的粒子电极、连接阴阳极板的直流电源，以及进水槽、进水孔、出水孔、出水槽、排水管、曝气管、排泥口，其改进之处在于：阴极板、阳极板竖直且平行相对的固定于壳体内，所述阴极板表面附有绝缘隔离层，所述粒子电极的材料与阳极板材料相同，与阳极板共同形成扩展阳极。设备内部极板隔离出若干独立的反应室，废水经进水槽均匀分配后，自每个反应腔室的下部进水孔向上流过反应器，从上部出水孔流出，汇集到出水槽。由于每个反应室内充填了与阳极材料一致的粒子，扩展了阳极面积，提高了传质效果和反应效率，使废水中的氰化物得到高效降解处理。
The invention relates to an extended anode electrolysis cyanide-breaking wastewater treatment equipment, which consists of: a shell, a cathode plate, an anode plate, a particle electrode filled between the cathode and anode plates, a DC power supply connected to the cathode and anode plates, a water inlet tank, and an Water holes, water outlet holes, water outlet tanks, drain pipes, aeration pipes, and mud discharge outlets are improved in that: the cathode plate and the anode plate are vertically and parallelly fixed in the housing, and the surface of the cathode plate is attached with an insulating In the isolation layer, the material of the particle electrode is the same as that of the anode plate, and together with the anode plate, an extended anode is formed. The internal plate of the equipment isolates several independent reaction chambers. After the waste water is evenly distributed through the water inlet tank, it flows upward through the reactor from the lower water inlet hole of each reaction chamber, flows out from the upper water outlet hole, and collects into the water outlet tank. Since each reaction chamber is filled with particles consistent with the anode material, the area of the anode is expanded, the mass transfer effect and reaction efficiency are improved, and the cyanide in the wastewater can be efficiently degraded and treated.
Description
Technical field
The present invention relates to a kind of equipment, belong to the electrochemistry technical field of waste water processing with electrochemical electrolysis catalysis process processing high cyanide containing wastewater.
Background technology
The chemical that prussiate is a kind of severe toxicity, hazardness is bigger, effect characteristics to people and warm-blooded animal are: toxicity is big, reaction is fast, when especially the mass concentration of prussic acid gas reaches 0.005mg/L, will cause in short period of time that the people has a headache and symptom such as arrhythmia, when reaching intermediate concentration, in most cases, dead within the 1h, minority is dead within 24h.
The every field that prussiate is widely used in national economy in use very easily produces a large amount of deleterious cyanide wastewater, especially the consumption of prussiate is very big in industry production technologies such as agricultural chemicals, pharmacy, fine chemistry industry, gold refinement, surface treatment, the water yield of discharging cyanide wastewater is also very big, and the very high concentrations of prussiate, water environment pollution is extremely serious to external world.Conventional treatment Methods of Cyanide Wastewater mainly is a chemical oxidization method, and this method is better to the treatment of cyanide waste water effect of lower concentration, but not only clearance is lower for the cyanide wastewater of high density, and input and operation cost are high.The cyanide wastewater of high density generally adopts the electrolytically decomposing cyanide method comparatively economic, practical, feasible, but tradition is used for the electrolyzer of broken cyanide adopts metallic substance to make pole plate, do not have granule electrode between cathode-anode plate, water flow mode is the formula of seething, adopt permanent direct current supply mode, its efficient is low, the energy consumption height fails to realize industrial applications.
Summary of the invention
The present invention wants the technical solution problem to be: overcome existing electrolytically decomposing cyanide sewage treatment equipment inefficiency, the shortcoming that energy consumption is high provides a kind of sewage treatment equipment using expanded anode for electrolytically decomposing cyanide high to Study on Treatment for High Concentration Cyanide efficient.
In order to solve above technical problem, sewage treatment equipment using expanded anode for electrolytically decomposing cyanide of the present invention, its composition comprises: housing, negative plate, positive plate, the filling granule electrode between cathode-anode plate, the direct supply of connection cathode-anode plate, and inlet flume, prosopyle, posticum, effluent trough, water shoot, aeration tube, mud discharging mouth, it is characterized in that: negative plate, positive plate is vertical and parallel being relatively fixed in housing, the negative plate surface is with dielectric isolation layer, the material of described granule electrode is identical with the positive plate material, forms expanded anode jointly with positive plate.
In this sewage treatment equipment, the material of granule electrode is consistent with positive plate, forms expanded anode jointly with positive plate, and the electrolytically decomposing cyanide reaction takes place on anode, so the expansion of annode area, has significantly improved mass transfer effect and reaction efficiency.
Further, in this sewage treatment equipment using expanded anode for electrolytically decomposing cyanide, described positive plate is a graphite cake, and granule electrode is a graphite particle, and negative plate is the stainless steel plate that has the nylon wire dielectric isolation layer.
Further, described direct supply is the high frequency direct current pulse power source.This power supply mode had both helped improving cyanide degradation efficient, can reduce the equipment power consumption again, saved working cost, can prevent polarization of electrode effectively simultaneously, improved electrode life.
Beneficial effect of the present invention is as follows:
(1), device interior by several independently reaction chamber form, waste water flows into from each prosopyle, chamber bottom, and the top posticum flows out, under electric field action, realize waste water in prussiate abolish reaction, the reaction chamber bottom is provided with aeration tube, mixes by gas mixing to promote reaction efficiently to carry out.Go out the structure formation with the bottom aeration on advancing under the current, make reaction more fully, effectively, fully.
(2), the device structure novelty, traditional electrolysis anodic material and structure are selected and are improved.The granule electrode of plate of the present invention and filling all adopts graphite material, form expanded anode, graphite material has higher broken cyanide effect when doing electrolytic anode, again owing to the electrolytically decomposing cyanide reaction takes place on anode, therefore the expansion of annode area has significantly improved mass transfer effect and reaction efficiency.
(3), high frequency direct current pulse power source power supply mode both helped improving cyanide degradation efficient, can reduce the equipment power consumption again, saved working cost, can prevent polarization of electrode effectively simultaneously, improved electrode life.
(4), sewage treatment equipment using expanded anode for electrolytically decomposing cyanide of the present invention is new technology, the novel method at Study on Treatment for High Concentration Cyanide, the treatment effect height, the prussiate clearance reaches more than 99%, and simple to operate, cost is low, can realize the industrial applications of broken cyanide electrolysis process.
(5), transfer transport only carries out between electrode and waste water component in the present technique treating processes, do not need to add in addition redox agent, avoided owing to adding the secondary pollution problem that medicament causes in addition, reaction intermediate and final product are nontoxic gas, therefore, present technique is cleaning method, environmental friendliness technology.
The present invention is used to handle poisonous and hazardous high density and contains cyanogen (CN
-) waste water, what it adopted is the electrolytically decomposing cyanide principle.Cyanide wastewater in the electrolyzer, under alkaline condition, CN
-Oxidizing potential ψ 0=-0.91V, from thermodynamics, CN
-Can be by electrochemical oxidation; On kinetics, CN
-Has very high oxidation efficiency at electrode surface.In the electrolytic oxidation reaction process, CN
-At first be oxidized to cyanic acid ion (1. formula), the cyanic acid ion hydrolysis generates ammonia (volatilization) and carbanion (2. formula) then, and meanwhile, cyanic acid ion also can continue oxidation, produces CO
2And N
2(3. formula)
CN
-+20H
--2e→CNO
-+H
2O ①
CNO
-+2H
2O→NH
4 ++CO
3 2- ②
2CNO
-+40H
--6e→2CO
2↑+N
2↑+2H
2O ③
The present invention proves that on theory and practice electrolytically decomposing cyanide is feasible.
As seen, ingenious conception of the present invention, simple in structure, and use flexibly, conveniently.After estimating to release, will be subjected to popular welcome in the industry, have good market outlook.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Fig. 1 looks sectional view for the master of sewage treatment equipment using expanded anode for electrolytically decomposing cyanide of the present invention.
Fig. 2 is the side-view of sewage treatment equipment using expanded anode for electrolytically decomposing cyanide of the present invention.
Embodiment
The sewage treatment equipment using expanded anode for electrolytically decomposing cyanide of present embodiment, as Fig. 1, shown in Figure 2, its composition comprises: housing 1, negative plate 2, positive plate 3, filling is in cathode-anode plate 2,3 granule electrode 4, the direct supply 12 that connects cathode-anode plate, and inlet flume 9, prosopyle 7, posticum 8, effluent trough 10, water shoot 11, aeration tube 5, mud discharging mouth 6, its improvements are: negative plate 2, vertical and parallel being relatively fixed in housing 1 of sun 3 pole plates, negative plate 2 surfaces are with dielectric isolation layer (not drawing among the figure), the material of described granule electrode 4 is identical with positive plate 3 materials, forms expanded anode jointly with positive plate.In the present embodiment, described positive plate 3 is graphite cakes, and granule electrode 4 is a graphite particle, and negative plate 2 is the stainless steel plates that have the nylon wire dielectric isolation layer; Direct supply 12 is the high frequency direct current pulse power source.Negative pole with the high frequency direct current pulse power source after the negative plate parallel connection is connected, and is connected with positive source after the positive plate parallel connection, adopts the continuous current control mode during electrolysis work.
Described as Fig. 1, Fig. 2 is among the embodiment, inlet flume 9, effluent trough 10 are distributed in equipment two sides, and inlet flume 9 bottoms are connected with the prosopyle 7 of each reaction chamber, and effluent trough 10 is connected with the posticum 8 on each reaction chamber top, inlet pipe 5 has many groups, is positioned at the bottom of apparatus casing reaction chamber.
20 pairs of vertical and parallel relative yin, yang pole plates (the logarithm suggestion 10～30 of sewage treatment equipment cathode-anode plate of the present invention) in this routine middle shell, cathode-anode plate spacing 20～50mm, device interior is isolated several independently reaction chambers by cathode-anode plate.Prosopyle 7 is positioned at the bottom of equipment reaction chamber, and posticum 8 is positioned at the top of equipment reaction chamber.
During equipment work, waste water flows into the prosopyle of each reaction chamber from inlet flume, and waste water flows out to effluent trough through electrolytically decomposing cyanide reaction back from reaction chamber top posticum from bottom to top, from the water shoot discharge of effluent trough, finishes treating processes again.Electrolytically decomposing cyanide is to finish under waste water is the condition of alkalescence, the pH value that need regulate waste water when acid at processed waste water.
Can be elementary cell with described electric catalysis reactor sewage treatment equipment according to the needs of actual waste water work of treatment, form array by series connection or mode in parallel.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (5)
1. sewage treatment equipment using expanded anode for electrolytically decomposing cyanide, its composition comprises: housing, negative plate, positive plate, the granule electrode of filling between cathode-anode plate, the direct supply that connects cathode-anode plate, and inlet flume, the prosopyle, posticum, effluent trough, water shoot, aeration tube, mud discharging mouth, it is characterized in that: negative plate, positive plate has 10～30 pairs, vertical and parallel being relatively fixed in housing, device interior is isolated several independently reaction chambers by cathode-anode plate, described cathode-anode plate spacing 20～50mm, described negative plate surface is with dielectric isolation layer, the material of described granule electrode is identical with the positive plate material, forms expanded anode jointly with positive plate.
2. sewage treatment equipment using expanded anode for electrolytically decomposing cyanide according to claim 1 is characterized in that: described positive plate is a graphite cake, and granule electrode is a graphite particle, and negative plate is the stainless steel plate that has the nylon wire dielectric isolation layer.
3. sewage treatment equipment using expanded anode for electrolytically decomposing cyanide according to claim 2 is characterized in that: described direct supply is the high frequency direct current pulse power source.
4. sewage treatment equipment using expanded anode for electrolytically decomposing cyanide according to claim 3, it is characterized in that: described prosopyle is positioned at the bottom of equipment reaction chamber, posticum is positioned at the top of equipment reaction chamber, waste water flows through reaction chamber from bottom to top, under electric field action, realize waste water in the degraded of prussiate abolish.
5. according to any described equipment of claim 1 to 4, it is characterized in that: with described sewage treatment equipment using expanded anode for electrolytically decomposing cyanide is elementary cell, forms array by series connection or mode in parallel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101206605A CN101781002B (en) | 2010-03-10 | 2010-03-10 | Sewage treatment equipment using expanded anode for electrolytically decomposing cyanide |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101206605A CN101781002B (en) | 2010-03-10 | 2010-03-10 | Sewage treatment equipment using expanded anode for electrolytically decomposing cyanide |
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| CN101781002A CN101781002A (en) | 2010-07-21 |
| CN101781002B true CN101781002B (en) | 2011-12-28 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102173482B (en) * | 2011-03-10 | 2012-08-29 | 武汉科梦环境工程有限公司 | Wastewater treatment method and electric bridge reactor thereof |
| CN105332006B (en) * | 2015-11-04 | 2018-07-03 | 阳谷祥光铜业有限公司 | Silver-colored electrolysis unit and technique |
| CN105461024B (en) * | 2015-12-21 | 2018-01-05 | 长江大学 | Three-dimensional electrode reactor device |
| CN107176760A (en) * | 2017-06-26 | 2017-09-19 | 中电环保股份有限公司 | A kind of high salt advance for the treatment of process of cyanide-bearing effluent and processing system |
| CN107720890B (en) * | 2017-11-17 | 2020-11-03 | 清华大学 | Electrochemical water treatment equipment and water treatment method |
| CN109097792A (en) * | 2018-10-29 | 2018-12-28 | 东北大学 | A kind of electrolysis unit from low concentration cupric cyanide barren solution recycling copper and cyanide |
| CN110436576B (en) * | 2019-08-22 | 2025-02-25 | 深圳市世清环保科技有限公司 | Cyanide removal particle electrode and preparation method thereof, and method and device for treating high-concentration cyanide-containing wastewater |
| CN110894089A (en) * | 2019-09-24 | 2020-03-20 | 方明环保科技(漳州)有限公司 | Electroreduction device and method for reducing nitrogen content in water |
| CN110894115A (en) * | 2019-09-24 | 2020-03-20 | 方明环保科技(漳州)有限公司 | Equipment for degrading organic matter and nitrogen content in water and its degradation method |
| CN110885151A (en) * | 2019-09-24 | 2020-03-17 | 方明环保科技(漳州)有限公司 | Wastewater treatment plant |
| CN113461112A (en) * | 2021-06-24 | 2021-10-01 | 南京师范大学 | Three-dimensional electrochemical wastewater treatment device |
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| SG139599A1 (en) * | 2006-08-08 | 2008-02-29 | Singapore Tech Dynamics Pte | Method and apparatus for treating water or wastewater or the like |
| CN100500583C (en) * | 2006-11-28 | 2009-06-17 | 北京科技大学 | A Fluidized Bed Electrode Reactor for Treating Organic Wastewater |
| CN101423266B (en) * | 2008-11-18 | 2011-01-26 | 南京赛佳环保科技有限责任公司 | Wastewater treatment device of horizontal polar plate multi-electrodes electrocatalysis reactor |
| CN201390683Y (en) * | 2009-04-17 | 2010-01-27 | 湖州森蓝环境工程有限公司 | Multistage electrolysis device for treating cyanide containing wastewater |
| CN201634488U (en) * | 2010-03-10 | 2010-11-17 | 南京赛佳环保实业有限公司 | Waste water treatment equipment provided with expanded anode and adopting electrolytic cyanide breaking method |
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