CN203833745U - Plug-flow type dual-electrode electrolytic flotation device - Google Patents

Plug-flow type dual-electrode electrolytic flotation device Download PDF

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Publication number
CN203833745U
CN203833745U CN201420217701.6U CN201420217701U CN203833745U CN 203833745 U CN203833745 U CN 203833745U CN 201420217701 U CN201420217701 U CN 201420217701U CN 203833745 U CN203833745 U CN 203833745U
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China
Prior art keywords
electrode
type dual
water
flow type
cavity
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Expired - Fee Related
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CN201420217701.6U
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Chinese (zh)
Inventor
张伟荣
张谦成
王孟君
丁才君
丁丽娟
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RONGCHENG ENVIRONMENTAL ENGINEERING GROUP Co Ltd
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RONGCHENG ENVIRONMENTAL ENGINEERING GROUP Co Ltd
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Priority to CN201420217701.6U priority Critical patent/CN203833745U/en
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Publication of CN203833745U publication Critical patent/CN203833745U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model discloses a plug-flow type dual-electrode electrolytic flotation device which comprises a device shell, a water inlet, a discharging opening and a water outlet, wherein the water inlet is formed in the position, close to the bottom end, of one side of the device shell, and the discharging opening and the water outlet are formed in the positions, close to the bottom end and the upper end, of the other side of the device shell respectively. A first-stage electrode cavity is formed in the side, provided with the water inlet, of the device shell. A plurality of first-stage plate electrodes are vertically distributed in the electrode cavity. A plurality of flow guide plates vertically distributed at intervals are sequentially arranged on the right side of the first-stage electrode cavity from left to right. The bottom ends of the flow guide plates are connected with the bottom face of the device shell or gaps are reserved between the bottom ends of the flow guide plates and the bottom face of the device shell, so that sewage flows in an up-and-down baffling mode, and second-stage electrolytic fillers are installed between adjacent flow guide plates. The plug-flow type dual-electrode electrolytic flotation device is used for processing degradation-resistant industrial sewage such as coating waste water, emulsion waste water and cutting fluid waste water, is particularly used for processing acid waste water, has the advantages of being small in occupied area, small in size, convenient to operate, movable and the like, and is good in sewage processing effect, flexible in use and capable of being combined with different process devices, and the sewage processing operating cost of a whole system is effectively reduced.

Description

The air supporting of a kind of pulling flow type dual-electrode electrolysis
Technical field
The utility model relates to a kind of trade effluent pre-processing device, particularly a kind of pulling flow type dual-electrode electrolysis air supporting.
Background technology
Organic wastewater with difficult degradation thereby is mainly the waste water producing in the production processes such as dyestuff, agricultural chemicals, medicine, chemical industry, coking, contaminated wastewater substrate concentration is high, toxicity large, salt is more high-leveled and difficult in biological degradation, therefore must adopt preconditioning technique and method, can effectively process.Be mainly derived from the professional waste water such as coating wastewater, emulsifying liquid waste water, Cutting Liquid Wastewater, wastewater from chemical industry, paint waste water.Toxicity is large, complicated, and chemical oxygen demand is high, and general microorganism does not almost have degradation effect to it, if these materials do not add improvement to environmental emission, seriously contaminate environment and the threat mankind's is healthy.Along with developing rapidly of industrial or agricultural, people have synthesized increasing organism, wherein hardly degraded organic substance has accounted for significant proportion, and therefore the improvement of hardly degraded organic substance research has caused domestic and international relevant expert's great attention, is focus and the difficult point of current water prevention and cure of pollution research.
Comparatively general method for pretreating is at present: electrolytic process, biological coupling technology, Wet Catalytic Oxidation Method (CWO) etc., although these methods can reach treatment effect, but follow-uply all need to add loaded down with trivial details traditional technology processing, just can reach desirable pretreating effect.
Summary of the invention
The utility model, for the deficiencies in the prior art, provides one to have floor space little, and volume is little, the advantages such as easy to operate, packaged type, good sewage processing effect, is used flexible, can combine with different process equipment, and effectively reduce the running cost of whole system sewage disposal.
For realizing the utility model object, provide following technical scheme: the air supporting of a kind of pulling flow type dual-electrode electrolysis, comprise apparatus casing, be opened in the water-in of the housing one nearly bottom of side, be opened in discharge outlet and the water outlet of He Jin upper end, the nearly bottom of housing opposite side, it is characterized in that being provided with one-level electrode cavity in the housing of water-in one side, in electrode cavity, be vertically placed with some one-level battery lead plates, electrode cavity right side is disposed with the flow deflector that some vertical spacings are arranged from left to right, described flow deflector bottom is connected with housing bottom surface or leaves gap, making sewage be upper and lower deflector type advances, secondary electrolysis filler is installed between described adjacent baffle.
As preferably, electrode cavity bottom is communicated with a cavity, is provided with reliever in cavity, and cavity bottom offers mud discharging mouth.
As preferably, water outlet is provided with overflow groove, and overflow groove top is provided with adjusting weir plate.
As preferably, above described flow deflector, be provided with slag scraper.
As preferably, described flow deflector is set to 8, is separated into 8 districts, and described the 1st, 3,5,7 flow deflector bottoms are connected with housing bottom surface, and gap is left in the 2nd, 4,6 flow deflector bottoms and housing bottom surface.
As preferably, described one-level battery lead plate is iron, aluminium, titanium, graphite or plumbic oxide, and between one-level battery lead plate, interconnecting plate is copper sheet.
As preferably, reliever model adopts TV-III, and material is stainless steel 304.
Principle of work of the present utility model:
One-level battery lead plate: one-level battery lead plate carries out electrolysis to waste water, water molecules ionization produces H+ and OH-, directional migration under electric field driven, and separate out respectively hydrogen and oxygen at negative plate and positive plate surface.Newly-generated bubble diameter is very small, and bubble hydrogen is about 10~30 μ m, and oxygen bubbles is about 20~60 μ m; And the bubble diameter producing when traditional pressurized dissolved air flotation is 100~150 μ m, the bubble diameter producing when mechanical stirring is 800~1000 μ m.The pressurization of energy force rate and mechanical stirring that the bubble that one-level battery lead plate produces is caught contaminant particles are height, and the dispersity of bubble is high, adheres to the suspended solids in water and floats as carrier, is more prone to remove pollution substance.One-level battery lead plate both can have been removed the hydrophobic contaminant in waste water, also can remove the wetting ability pollutent in waste water.
Secondary electrolysis filler: secondary electrolysis filler adopts multiple iron-carbon micro-electrolysis technique to carry out secondary electrolytic reaction, it is the cell reaction based in electrochemistry, in the time that iron and carbon are immersed in electrolyte solution, owing to there being the difference in Electrode Potential of 1.2V between Fe and C, thereby can form countless microbattery systems, form an electric field at its action space, the nascent state ferrous ion that anodic reaction produces has stronger reducing power, can make some organic chromophoric group nitro-NO2, nitroso-group-NO is reduced into amido-NH2, the biodegradability of another amido type organic is also apparently higher than nitro type organic, the ferrous ion of nascent state also can make two keys of some unsaturated chromophoric group (as carboxyl-COOH, azo-group-N=N-) open, chromophoric group destroyed and remove colourity, making part difficult degradation ring-type become the small organic molecule of readily biodegradable and improve biodegradability with long-chain organic substance decomposing.In addition, divalence and ferric ion are good flocculation agents, particularly newborn ferrous ion has higher absorption-flocculation activity, regulate the pH of waste water can make iron ion become the flocks of oxyhydroxide, suspension in absorption sewage or molecule and the organic polymer of colloidal attitude, can further reduce the colourity of waste water, remove some organic pollutants matter simultaneously waste water is purified.Cathodic reaction produces a large amount of nascent states [H] and [O], under the condition of slant acidity, these activeconstituentss all can with waste water in many component generation redox reactions, make organic macromolecule generation chain-scission degradation, thereby eliminate the colourity of organic waste water, improve the biodegradability of waste water, for subsequent disposal has been created condition.
The beneficial effects of the utility model: can select different electrode materialss according to the difference of removing material, can produce the effects such as strong flocculation, strong oxidation, strong reduction, strong air supporting, to reach optimum handling effect, often the electrode of application has iron, aluminium, titanium, graphite, plumbic oxide etc., every kind of material has it to be suitable for the field of application, and its investment cost is low; Working cost is low; Maintenance and repair expense is low; Without adding any chemical agent; Floor space is little; Simple to operate, level of automation is high; The device processes time is short, processing efficiency is high; Adapt to waste water scope wide, can process multiple pollutant; Device processes generation sludge quantity is few, mud degree of compactness is high.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The air supporting of a kind of pulling flow type dual-electrode electrolysis, comprise apparatus casing 001, be opened in the water-in 011 of the housing 001 1 nearly bottoms of side, be opened in discharge outlet 012 and the water outlet 013 of housing 001 He Jin upper end, the nearly bottom of opposite side, in the housing 001 of water-in 011 1 sides, be provided with one-level electrode cavity 002, electrode cavity 002 is interior is vertically placed with 8 one-level battery lead plates 021, one-level battery lead plate 021 is iron, 021 of one-level battery lead plate interconnects plate, 022 is copper sheet, electrode cavity 002 right side is disposed with the flow deflector 003 that 8 vertical spacings are arranged from left to right, described flow deflector 003 is set to 8, be separated into 8 districts, the described the 1st, 3, 5, 7 flow deflector 003 bottoms are connected with housing 001 bottom surface, the 2nd, 4, gap is left in 6 flow deflector 003 bottoms and housing 001 bottom surface, making sewage be upper and lower deflector type advances, 003 of described adjacent baffle is provided with secondary electrolysis filler 004.Electrode cavity 002 bottom is communicated with a cavity 005, is provided with reliever 051 in cavity 005, and cavity 005 bottom offers mud discharging mouth 052.Water outlet 013 place is provided with overflow groove 006, and overflow groove 006 top is provided with and regulates weir plate 007.Described flow deflector 003 top is provided with slag scraper 008, and reliever 051 model adopts TV-III, and material is stainless steel 304.
First trade effluent is entered by water-in 011, waste water is in uphill process, carry out contact reacts with one-level battery lead plate 021, one-level battery lead plate 021 produces the bubble that diameter is small under the reaction of electric field, and these bubbles are in the time rising, just take suspended substance out of the water surface, on the water surface, form scum layer, be provided with reliever 051 in one-level battery lead plate 021 bottom, reliever 051 discharges auxiliary rising micro-bubble, the time that shortens on the one hand one-level electrode reaction, increase on the other hand its effect.Waste water enters secondary electrolysis filler 004 by flow deflector 003, described secondary electrolysis filler 004 is divided into seven lattice, is provided with iron carbon filler in every lattice, and it can form countless microbattery systems, form an electric field at its action space, make organic macromolecule generation chain-scission degradation, thereby improved the biodegradability of waste water, for subsequent disposal has been created condition, waste water is finally through clear water zone 009, by water outlet 013 water outlet, in exiting water process, operator can operate and regulate weir plate 007 to regulate liquid level.
The air supporting of pulling flow type dual-electrode electrolysis is as follows for all kinds of impurity substances removal effects in waste water:
(1) oil
Oily(waste)water is different according to its source, and in water body, the composition of oil contaminants and existence are also different.Oil existence form in sewage water body roughly has following 5 kinds: suspension oil, dispersed oil, oil in water emulsion, dissolving oil, oil-solids.
Wherein, suspension oil, dispersed oil, oil-solids all can be removed preferably by simple mechanical separation or dissolved air flotation.The oily kind that is difficult to most process is oil in water emulsion, and oil is emulsion form in water, easily forms O/W type emulsification particulate, and particle diameter is less than 1 μ m, and surface usually covers the electronegative electrostatic double layer of one deck, and system is more stable, is difficult for bubbling through the water column, more difficult.The air supporting of pulling flow type dual-electrode electrolysis utilizes the effect of its highfield can make charged oil in water emulsion particulate generation directional migration, in electrode plate surface and electric core, realize de-steady polymerization, the efficient flocculating group that simultaneously electrolysis produces also can extraordinary destruction oil droplet double electrical layers, realize the effect of breakdown of emulsion, oil droplet air supporting after a large amount of microbubble breakdowns of emulsion that concerted reaction produces is again removed, and its clearance can reach more than 90%.
(2)?COD
Organism kinds in industrial sewage is various, and composition is also very complicated, different according to its organism kinds of different industries.According to its deliquescent difference, can be divided into dissolved organic matter and non-solubility organism, can be divided into again and be easy to biological degradation organism and be difficult to biological degradation organism according to its biodegradability.The air supporting of pulling flow type dual-electrode electrolysis for high density, be difficult to biochemical degradation type organic and have good removal effect.Pulling flow type dual-electrode electrolysis air flotation technology utilizes efficient electrolysis throwing out, generates the extremely strong high reactivity flocculation group of adsorptivity, has good removal effect for non-solubility macromolecule organic.Simultaneously, combine with electro-flotation and electrooxidation effect, can further improve it for organic clearance, especially for the organism that is difficult to biochemical degradation, can cut off chemical bond by strong oxidation, improve organic biodegradability, then can reach the object of abundant degraded COD in conjunction with biochemical processing method.
The utility model pulling flow type dual-electrode electrolysis air flotation technology is directed to the clearance of COD according to different water quality situations, and clearance is generally 30%-80%.
(1) turbidity, suspended substance
Pulling flow type dual-electrode electrolysis air flotation technology is because of its efficient throwing out, all can realize extraordinary adsorption-flocculation effect for the colloidal solid in water and various impurity particle, make the molecule in water aggregate into larger floc sedimentation, the floc sedimentation forming than the floc sedimentation that adds flocculation agent formation more greatly, more closely knit, hold back from water and separate thereby be beneficial to sedimentation.Pulling flow type dual-electrode electrolysis air flotation technology is processed water outlet can make delivery turbidity be controlled at below 3NTU in conjunction with precipitation, filtering technique, if raw water turbidity very high (>100NTU), only need the simple operating parameter that changes, same flocculating effect while reaching with processing compared with low turbidity water.
Pulling flow type dual-electrode electrolysis air flotation technology can reach more than 90% for the clearance of turbidity, suspended substance.
(2) SiO2, colloid silicon, organosilicon
SiO2 can separate out in the time reaching hypersaturated state from water, and often its impact causing for membrane filtration system is larger, because the SiO2 separating out can stick to film surface, so must control removal in the preprocessing process of film.Flocculation can be adsorbed SiO2 and separated out from water, and general flocculation agent is for the clearance of SiO2 30%-40%, and pulling flow type dual-electrode electrolysis air flotation technology can reach 70%-90% for the clearance of SiO2
(3) heavy metal ion
General heavy metal ions in wastewater is mainly: chromium, iron, manganese etc.For the removal of Fe and Mn, be generally to adopt aeration that Fe and Mn is converted into high oxide and oxyhydroxide, make it be converted into insoluble state by ionic state and separate out from water, recycling removes by filter.Pulling flow type dual-electrode electrolysis air flotation technology generates OH-ion powering up in making water in reaction process, forms insolubles and separates out, then coordinate sand filtration apparatus can effectively remove the heavy metal ion in water in conjunction with Fe and Mn.Clearance can reach 80%-95%.For the removal of chromium ion, be mainly for the Cr6+ in electroplating wastewater, because Cr6+ toxicity is larger, need to be first reduced to the Cr3+ that toxicity is lower, recycling Cr3+ and OH-neutralization precipitation are removed.The electrolysis of pulling flow type dual-electrode electrolysis air flotation technology produces divalence Fe2+, and it can fully be converted into the Cr6+ in water the Cr3+ of lower valency as a kind of reductive agent, then the OH-of association reaction generation, generates sedimentable matter and separates removal.Pulling flow type dual-electrode electrolysis air flotation technology can reach more than 90% for the clearance of chromium ion.
(4) colourity
Colourity generally causes by color development functional group in organism, as very high in printing and dyeing, its colourity of dye industry waste water.Pulling flow type dual-electrode electrolysis air flotation technology has extraordinary effect for the removal of high chroma water, and its strong oxidation and strong reducing action can destroy organic color development functional group, reduces the colourity of water quality.Pulling flow type dual-electrode electrolysis air flotation technology is generally greater than 80% for the clearance of colourity.
(5) hardness
Hardness in water mainly refers to calcium, magnesium ion.Pulling flow type dual-electrode electrolysis air flotation technology can make calcium, magnesium ion in water separate out under suitable pH value environment, and flocculation sediment separates.Its clearance for total hardness can reach more than 85%.
(6) bacterium, virus
Pulling flow type dual-electrode electrolysis air flotation technology utilizes highfield effect and the oxygenizement of reacting the strong oxidizing property group generating between pole plate, removes bacterium and the virus killed in water, and its clearance can reach more than 80%.

Claims (7)

1. pulling flow type dual-electrode electrolysis air supporting, comprise apparatus casing, be opened in the water-in of the housing one nearly bottom of side, be opened in discharge outlet and the water outlet of He Jin upper end, the nearly bottom of housing opposite side, it is characterized in that being provided with one-level electrode cavity in the housing of water-in one side, in electrode cavity, be vertically placed with some one-level battery lead plates, electrode cavity right side is disposed with the flow deflector that some vertical spacings are arranged from left to right, described flow deflector bottom is connected with housing bottom surface or leaves gap, making sewage be upper and lower deflector type advances, secondary electrolysis filler is installed between described adjacent baffle.
2. a kind of pulling flow type dual-electrode electrolysis according to claim 1 air supporting, is characterized in that electrode cavity bottom is communicated with a cavity, is provided with reliever in cavity, and cavity bottom offers mud discharging mouth.
3. a kind of pulling flow type dual-electrode electrolysis according to claim 1 air supporting, is characterized in that water outlet is provided with overflow groove, and overflow groove top is provided with adjusting weir plate.
4. a kind of pulling flow type dual-electrode electrolysis according to claim 1 air supporting, is characterized in that described flow deflector top is provided with slag scraper.
5. a kind of pulling flow type dual-electrode electrolysis according to claim 1 air supporting, it is characterized in that described flow deflector is set to 8, be separated into 8 districts, described the 1st, 3,5,7 flow deflector bottoms are connected with housing bottom surface, and gap is left in the 2nd, 4,6 flow deflector bottoms and housing bottom surface.
6. a kind of pulling flow type dual-electrode electrolysis according to claim 1 air supporting, is characterized in that described one-level battery lead plate is iron, aluminium, titanium, graphite or plumbic oxide, and between one-level battery lead plate, interconnecting plate is copper sheet.
7. a kind of pulling flow type dual-electrode electrolysis according to claim 1 air supporting, is characterized in that reliever model adopts TV-III, and material is stainless steel 304.
CN201420217701.6U 2014-04-30 2014-04-30 Plug-flow type dual-electrode electrolytic flotation device Expired - Fee Related CN203833745U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105016537A (en) * 2014-04-30 2015-11-04 荣诚环境工程集团有限公司 Plug flow type dual-electrode electrolysis air floater

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105016537A (en) * 2014-04-30 2015-11-04 荣诚环境工程集团有限公司 Plug flow type dual-electrode electrolysis air floater

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140917

Termination date: 20160430