CN102515365A - Membrane-free bioelectrochemical device for synergistic treatment of electroplating wastewater and domestic sewage - Google Patents
Membrane-free bioelectrochemical device for synergistic treatment of electroplating wastewater and domestic sewage Download PDFInfo
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- CN102515365A CN102515365A CN2011104147105A CN201110414710A CN102515365A CN 102515365 A CN102515365 A CN 102515365A CN 2011104147105 A CN2011104147105 A CN 2011104147105A CN 201110414710 A CN201110414710 A CN 201110414710A CN 102515365 A CN102515365 A CN 102515365A
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- electroplating wastewater
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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Abstract
The invention discloses a membrane-free bioelectrochemical device for synergistic treatment of electroplating wastewater and domestic sewage. With the device, organic pollutants are decomposed under the catalysis of an anode microorganism, and electrons are released and delivered to a cathode graphite plate to reduce metal ions to low valence sediments so as to achieve synergistic treatment of domestic sewage and electroplating wastewater, and recover metal resources. At the same time, though electron transfer between electrodes, electric energy is output. A three phase separator can effectively separate liquids of the two electrode compartments and collect the anaerobic biogas.
Description
Technical field
The present invention relates to the electrochemical appliance of reducible attitude metal in a kind of direct recovery waste water, be particularly useful for the recycling treatment of electroplating wastewater.Be applicable to the associated treatment of sewage simultaneously.
Background technology
At present, the electroplating industry wastewater treatment method mainly is divided into physics, chemistry and biological process, and the method that extensively adopts mainly contains oxidation reduction process, evaporation concentration method, electrolytic process, ion exchange method, absorption method, membrane separation process etc.Chemical treatment method is ripe, and effective, cost is low, but reagent consumption is big, and most of product needs the further processing can resource utilization; The physical treatment method is polluted little, also has shortcomings such as power consumption is big, waste resource simultaneously; Biologic treating technique is through the interaction of biological organism or its meta-bolites and heavy metal ion, reaches the purpose of purifying liquid waste, and has advantages such as cost is low, environmental benefit is good.Yet with respect to the materialization system, traditional biological treatment often need make up bigger answering system or prolong reaction time, causes average sewage place to measure corresponding reduction.
Recently, we have made up metallurgical microbiological fuel cell according to the bioelectrochemistry principle, and good authentication Cu
2+By bioelectrochemistry reductive feasibility.(Bioelectrochemical System, BES) mainly be made up of negative electrode and anode: little synchronous biological degradation of organic substances of anode and release electronics, negative electrode can be accepted the reduction that electronics is realized heavy metal ion in the bioelectrochemistry system.It is reported that BES system majority is in the laboratory study stage, its volume is tens not wait to the hundreds of milliliter, does not almost completely reach the scale of practical application.This system rarely has application especially in electroplating wastewater processing, engineering report instances few in number are all from the treatment of Organic Wastewater field, and major part needs the expensive film of installing to separate cathode and anode solution.
Summary of the invention
Because of O
2In atmosphere, extensively be easy to get and have a higher redox potential, usually the BES negative electrode with gaseous state or dissolved oxygen as electron acceptor(EA).Directly can make up air cathode BES system as electron acceptor(EA) with gox, this system has advantages such as simple in structure, that power density is big, but negative electrode need be catalyzer with the metal platinum of costliness, and cost of manufacture is higher; Then need keep as the cathode electronics acceptor with dissolved oxygen, consume a large amount of electric energy through mechanical aeration.The right Standard Electrode Potentials of burning reduction electricity is higher, like Cu
2+/ Cu can reach 0.3419V, and its reduzate metallic copper has electroconductibility preferably, and is little to system's internal resistance influence.Therefore, contain Cu
2+The optional BES catholyte of doing of the waste water of plasma state heavy metal.This system when reclaiming simple substance (or lower valency heavy metal deposition thing) resource, can also export the electric energy that produces in the electronic transfer process removing heavy metal synchronously.Have wastewater treatment and electrogenesis dual-use function concurrently.
The technical solution adopted for the present invention to solve the technical problems is: (overall reactor is long-pending to be extended to 16L, reaches the WWT pilot scale for Polymethyl Methacrylate, PMMA) material combined reactor to adopt the cylindricality polymethylmethacrylate.As anode substrate, mikrobe provenance and growth metabolism desired nutritional thereof are provided with sewage; Electroplating wastewater is rich in the ionic state electron acceptor(EA) as catholyte.Inertia titanium silk junction circuit, external VR is gathered the output electric energy, size of current in the while regulator control system, controlled oxidation attitude metals ion rate of reduction.Anode is a porous medium carbon felt, adopts three-dimensional arrangement to be beneficial to microorganic adhesion and the outwards transmission of institute's electrogenesis; Negative electrode is a graphite disk, is convenient to adhering to and recycling of as-reduced metal sedimentation products.PP material triphase separator is set between two Room, is used to collect anaerobic gas generation, replace the conventional ion exchange membrane simultaneously, separate bacterium and oxygen.Leave the water route between separators at different levels, be used for material transfer.
The invention has the beneficial effects as follows: under the system scale of amplifying, can remove the heavy metal ion in the electroplating wastewater, reclaim simple substance or low price settling at the organic pollutant in the degraded sewage.Simultaneously, output electric energy, environmental friendliness, energy conservation.
Description of drawings
Fig. 1 is no film bioelectrochemistry device schema, and Fig. 2 is no film bioelectrochemistry device schema.
Embodiment
In Fig. 1,1 anolyte compartment and 2 cathode compartments are the right cylinder of diameter 150 mm, respectively high 500 mm and 250 mm.The cathode compartment top prevents O by 3 end cap seal
2Accept electronics, reduce the metals ion reduction efficiency.Reactor drum all material (except the riveting nut) is synthetic glass or plastic material, must not contain metal.4 triphase separators are major parts, combine by three funnel-form PP plastic dam, and 60 ° of drift angles, staggered to each other combination leaves 1 cm slit therebetween as the water route path.5 air outlets (remove and be water outlet in addition) are joined on the right side.This tripping device can fully guarantee anaerobism biogas and solution separating, and is beneficial to material transfer.The anode carbon felt is filled the anolyte compartment as far as possible densely.The layering of negative electrode graphite cake is laid, and the moon is provided with different progression as required, offers complete, half mouthful of staggered flowing of guiding electroplating wastewater.6 be negative electrode graphite cake electrode vertical view (on) and side-view (descending), diameter 140 mm, thick 4 mm are fixed by the bracket support.The bottom, anolyte compartment is provided with 7 water distribution boards, is used for the uniform distribution water inlet, is fixed by the water distribution board carriage, and the lower end blow-off valve can be got rid of muddy water mixed solution where necessary fast.A-A is a cathode compartment top flange vertical view, and B-B is bracket vertical view (a staggered opening), and C-C is a triphase separator funnel carriage vertical view, and D-D is a water distribution board carriage vertical view.
In Fig. 2,01 anolyte compartment places the bottom, middle assembling 04 triphase separator, and the top is 02 cathode compartment (can assemble 5 graphite cake electrodes at most), and by 03 end cap seal, four unit are through the nut riveted joint, and flange connections is with seal with elastometic washer.Sewage exposes to the sun into N before 05 peristaltic pump flows into the anolyte compartment
2Fully get rid of dissolved oxygen, with the anaerobic environment of guaranteeing that the electrogenesis bacteria growing is required.Sewage after the processing is collected at anode top; Electroplating wastewater is injected by the device top, and flow out cathode compartment bottom (last step negative plate bottom).The cathode and anode electrode is with external 06 VR of titanium silk lead.07 voltage data gathering device is made up of data collecting card and PC system.System's initial start stage, the negative electrode top blasts air by 08 air pump, 09 pressure regulator valve regulation and control gas flow.
Claims (5)
1. the no film bioelectrochemistry device of associated treatment electroplating wastewater and sewage, in the anolyte compartment, the organism in the microorganism catalysis degraded sewage discharges electronics; In cathode compartment, metals ion is accepted electronics and is reduced; Two Room are separated by triphase separator, and leave the exchange of substance path; It is characterized in that: in anode and cathode associated treatment electroplating wastewater and sewage, produce certain electric energy, and need not to add expensive separation membrane.
2. no film bioelectrochemistry device according to claim 1 is characterized in that: utilize the organic substance in the sewage, for the electrogenesis microorganism growth provides the desired nutritional material, purify waste water simultaneously.
3. no film bioelectrochemistry device according to claim 1 is characterized in that: the electronics that utilizes organic pollutant degradation to produce, oxidation state metal ion reduction, deposition with electroplating in the water are easy to product and reclaim and resource reutilization.
4. no film bioelectrochemistry device according to claim 1 is characterized in that: cathode and anode associated treatment sewage, and when carrying out oxidation and reduction reaction respectively, metastatic electron, output electric energy.
5. no film bioelectrochemistry device according to claim 1 is characterized in that: the PP material triphase separator with design voluntarily replaces separation cathode and anode solution, collects anaerobism biogas, and is cheap and respond well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104147105A CN102515365A (en) | 2011-12-13 | 2011-12-13 | Membrane-free bioelectrochemical device for synergistic treatment of electroplating wastewater and domestic sewage |
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|---|---|---|---|
| CN2011104147105A CN102515365A (en) | 2011-12-13 | 2011-12-13 | Membrane-free bioelectrochemical device for synergistic treatment of electroplating wastewater and domestic sewage |
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| CN102515365A true CN102515365A (en) | 2012-06-27 |
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| CN2011104147105A Pending CN102515365A (en) | 2011-12-13 | 2011-12-13 | Membrane-free bioelectrochemical device for synergistic treatment of electroplating wastewater and domestic sewage |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103641271A (en) * | 2013-11-28 | 2014-03-19 | 哈尔滨工业大学 | Microorganism reinforced gallery pushing flow type wastewater treatment bioelectrochemical device |
| CN105293694A (en) * | 2015-11-26 | 2016-02-03 | 中国科学院生态环境研究中心 | Stackable anaerobic wastewater treatment device internally installed biological catalysis electrolysis system and wastewater treatment method using same |
| CN109454099A (en) * | 2017-09-06 | 2019-03-12 | Ik株式会社 | The heavy metals removal method of contaminated soil |
| CN110104874A (en) * | 2019-04-24 | 2019-08-09 | 上海交通大学 | A kind of continuous flow wetland type microbiological fuel cell reactor sewage-treatment plant |
| CN110127840A (en) * | 2019-04-24 | 2019-08-16 | 上海交通大学 | Apparatus for treating sewage based on aerobic particle mud bed reactor cathode microbial fuel cell |
| CN113003701A (en) * | 2021-02-08 | 2021-06-22 | 哈尔滨工业大学 | Lead-zinc mine tailing pond wastewater deep purification device with electric coupling biological filter |
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| US20050208343A1 (en) * | 2002-05-14 | 2005-09-22 | Korea Institute Of Science And Technology | Membraneless and mediatorless microbial fuel cell |
| CN101710625A (en) * | 2009-10-30 | 2010-05-19 | 北京大学深圳研究生院 | Fuel cell system and method of generating electricity and reducing heavy metal through sewage treatment |
| CN101777661A (en) * | 2010-03-19 | 2010-07-14 | 哈尔滨工业大学 | Device for generating methane phase and electricity by using cow dung to perform two-phase marsh gas fermentation and electricity generating method thereof |
| US20100239920A1 (en) * | 2009-03-18 | 2010-09-23 | Brian Sefton | Multi-Electrode Microbial Fuel Cells and Fuel Cell Systems and Bioreactors with Dynamically Configurable Fluidics |
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2011
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Patent Citations (4)
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| US20050208343A1 (en) * | 2002-05-14 | 2005-09-22 | Korea Institute Of Science And Technology | Membraneless and mediatorless microbial fuel cell |
| US20100239920A1 (en) * | 2009-03-18 | 2010-09-23 | Brian Sefton | Multi-Electrode Microbial Fuel Cells and Fuel Cell Systems and Bioreactors with Dynamically Configurable Fluidics |
| CN101710625A (en) * | 2009-10-30 | 2010-05-19 | 北京大学深圳研究生院 | Fuel cell system and method of generating electricity and reducing heavy metal through sewage treatment |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103641271A (en) * | 2013-11-28 | 2014-03-19 | 哈尔滨工业大学 | Microorganism reinforced gallery pushing flow type wastewater treatment bioelectrochemical device |
| CN103641271B (en) * | 2013-11-28 | 2016-02-17 | 哈尔滨工业大学 | A kind of microbial augmentation type gallery pulling flow type wastewater treatment Bioelectrochemical device |
| CN105293694A (en) * | 2015-11-26 | 2016-02-03 | 中国科学院生态环境研究中心 | Stackable anaerobic wastewater treatment device internally installed biological catalysis electrolysis system and wastewater treatment method using same |
| CN105293694B (en) * | 2015-11-26 | 2018-07-20 | 中国科学院生态环境研究中心 | The stack anaerobic treatment equipment for wastewater of built-in biological catalytic electrolysis system and the method that waste water is handled using it |
| CN109454099A (en) * | 2017-09-06 | 2019-03-12 | Ik株式会社 | The heavy metals removal method of contaminated soil |
| CN109454099B (en) * | 2017-09-06 | 2021-03-30 | Ik株式会社 | Method for removing heavy metal from contaminated soil |
| CN110104874A (en) * | 2019-04-24 | 2019-08-09 | 上海交通大学 | A kind of continuous flow wetland type microbiological fuel cell reactor sewage-treatment plant |
| CN110127840A (en) * | 2019-04-24 | 2019-08-16 | 上海交通大学 | Apparatus for treating sewage based on aerobic particle mud bed reactor cathode microbial fuel cell |
| CN110127840B (en) * | 2019-04-24 | 2021-10-22 | 上海交通大学 | Sewage treatment device based on aerobic granular sludge bed reactor cathode microbial fuel cell |
| CN113003701A (en) * | 2021-02-08 | 2021-06-22 | 哈尔滨工业大学 | Lead-zinc mine tailing pond wastewater deep purification device with electric coupling biological filter |
| CN113003701B (en) * | 2021-02-08 | 2022-12-16 | 哈尔滨工业大学 | Lead-zinc mine tailing pond wastewater deep purification device with electric coupling biological filter |
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Application publication date: 20120627 |