CN201634488U - Waste water treatment equipment provided with expanded anode and adopting electrolytic cyanide breaking method - Google Patents

Waste water treatment equipment provided with expanded anode and adopting electrolytic cyanide breaking method Download PDF

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Publication number
CN201634488U
CN201634488U CN201020126657XU CN201020126657U CN201634488U CN 201634488 U CN201634488 U CN 201634488U CN 201020126657X U CN201020126657X U CN 201020126657XU CN 201020126657 U CN201020126657 U CN 201020126657U CN 201634488 U CN201634488 U CN 201634488U
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China
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anode
plate
treatment equipment
equipment
expanded
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CN201020126657XU
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刘秀宁
林晨
汤捷
杜小军
刘钟宁
何书铭
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NANJING SAGE ENVIRONMENTAL PROTECTION INDUSTRY Co Ltd
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NANJING SAGE ENVIRONMENTAL PROTECTION INDUSTRY Co Ltd
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Abstract

The utility model relates to waste water treatment equipment provided with an expanded anode and adopting the electrolytic cyanide breaking method. The equipment comprises a casing, a cathode plate, an anode plate, particle electrodes filled between the cathode plate and the anode plate, a DC power supply for connecting the cathode plate and the anode plate, a water inlet tank, water inlet holes, water outlet holes, a water outlet tank, a drainage pipe, an aerator pipe and a sludge discharge opening. The improvements of the equipment are that the cathode plate and the anode plate are vertically and oppositely fixed in the casing in parallel; an insulation layer is attached onto the surface of the cathode plate; the material of the particle electrodes is the same as that of the anode plate, and the expanded anode is formed by the particle electrodes and the anode plate together; and the inside of the equipment is divided into a plurality of independent reaction chambers by the electrode plates. After being uniformly distributed in the water inlet tank, waste water enters the reaction chambers from the water inlet holes at the lower parts, flows through reactors, then flows out from the water outlet holes at the upper parts, and finally converges into the water outlet tank. As particles made of material identical to that of the anode plate are filled in each reaction chamber, and the area of the anode plate is increased, so that the mass transfer effect and the reaction efficiency are improved, and cyanide in waste water can be efficiently degraded.

Description

Sewage treatment equipment using expanded anode for electrolytically decomposing cyanide
Technical field
The utility model relates to a kind of equipment with electrochemical electrolysis catalysis process processing high cyanide containing wastewater, belongs to the electrochemistry technical field of waste water processing.
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.
The utility model content
The utility model 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 utility model, 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, vertical and parallel being relatively fixed in housing of positive plate, 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.
The beneficial effects of the utility model are 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 the utility model plate 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), the utility model sewage treatment equipment using expanded anode for electrolytically decomposing cyanide 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 utility model 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 -+2OH --2e→CNO -+H 2O ①
CNO -+2H 2O→NH 4 ++CO 3 2-
2CNO -+4OH --6e→2CO 2↑+N 2↑+2H 2O ③
The utility model proves all that on theory and practice electrolytically decomposing cyanide is feasible.
As seen, the utility model ingenious conception, 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
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 looks sectional view for the master of the utility model sewage treatment equipment using expanded anode for electrolytically decomposing cyanide.
Fig. 2 is the side-view of the utility model sewage treatment equipment using expanded anode for electrolytically decomposing cyanide.
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 the utility model sewage treatment equipment cathode-anode plate) 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 utility model 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 the utility model requirement.

Claims (6)

1. sewage treatment equipment using expanded anode for electrolytically decomposing cyanide, 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, 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: have 10~30 pairs of vertical and parallel relative yin, yang pole plates, cathode-anode plate spacing 20~50mm, device interior is isolated several independently reaction chambers by cathode-anode plate.
5. sewage treatment equipment using expanded anode for electrolytically decomposing cyanide according to claim 4, 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.
6. according to any described equipment of claim 1 to 5, 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.
CN201020126657XU 2010-03-10 2010-03-10 Waste water treatment equipment provided with expanded anode and adopting electrolytic cyanide breaking method Expired - Lifetime CN201634488U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101781002A (en) * 2010-03-10 2010-07-21 南京赛佳环保实业有限公司 Sewage treatment equipment using expanded anode for electrolytically decomposing cyanide
CN104085959A (en) * 2014-07-31 2014-10-08 北京博汇特环保科技有限公司 Cathode or anode expanded three-dimensional electrocatalytic oxidation reactor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101781002A (en) * 2010-03-10 2010-07-21 南京赛佳环保实业有限公司 Sewage treatment equipment using expanded anode for electrolytically decomposing cyanide
CN104085959A (en) * 2014-07-31 2014-10-08 北京博汇特环保科技有限公司 Cathode or anode expanded three-dimensional electrocatalytic oxidation reactor

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AV01 Patent right actively abandoned

Granted publication date: 20101117

Effective date of abandoning: 20111228