CN203768095U - Device for in-situ remediation of polluted groundwater by using microbial electrolysis cell process - Google Patents
Device for in-situ remediation of polluted groundwater by using microbial electrolysis cell process Download PDFInfo
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- CN203768095U CN203768095U CN201420151230.3U CN201420151230U CN203768095U CN 203768095 U CN203768095 U CN 203768095U CN 201420151230 U CN201420151230 U CN 201420151230U CN 203768095 U CN203768095 U CN 203768095U
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- electrolysis cell
- polluted groundwater
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Abstract
The utility model discloses a device for in-situ remediation of polluted groundwater by using a microbial electrolysis cell process. The device comprises a sealed anode chamber and a sealed cathode chamber arranged in the polluted groundwater, wherein small holes are formed in the chamber wall of each of the anode chamber and the cathode chamber; an anode electrode and a cathode electrode are respectively placed in the anode chamber and the cathode chamber, and are respectively connected with a high potential end and a low potential end of a voltage-stabilized power supply; electricity production microorganisms are adhered to the surface of the anode electrode. The device disclosed by the utility model can be used for removing reducing organic pollutants in sewage while obtaining hydrogen energy. In addition, the device can be used for removing some pollutants such as Pb<2+>, Ni<2+>, chlorohydrocarbon and pentavalent uranium with relatively low reduction potentials.
Description
Technical field
The utility model belongs to groundwater treatment technical field, is specifically related to utilize microorganism electrolysis cell technology original position to repair Polluted Groundwater and obtains Hydrogen Energy or the device of recovery metal simultaneously.
Background technology
As the Freshwater resources of mankind's preciousness, along with the development of modern society's process of industrialization, there is pollution problem in various degree in underground water.From eighties of last century sixties, groundwater pollution aggravates gradually, so the recovery technique of underground water also grows up thereupon.Remedy Technology of Contaminated Groundwater comprises showering, original position reparation and monitoring Natural Attenuation technology.Showering technology is that contaminated underground water is drawn to the technology that process on earth's surface again.Treatment capacity is large in a short time, processing efficiency is higher for this technology, but prolonged application ubiquity the phenomenon such as hangover, bounce-back, has finally reduced processing efficiency, increases processing cost.Monitoring Natural Attenuation technology is the recovery technique that fully relies on natural purifying ability, and the repair time needing is very long.In addition the kind of underground water pollutant is increasing, outside organic matter removal, also comprise heavy metal, inorganic salt and radioelement etc., show up prominently in groundwater pollution reparation field so groundwater pollution based technique for in-situ remediation is just repaired the advantages such as thorough, to process pollutent kind is many, the time is relatively short, cost is relatively cheap with it.Wherein biology in situ recovery technique refers to and is not substantially destroying under the soil body and underground water natural environmental condition, contaminated object is not carried or transported, but in former place, remove the method for underground water pollutant by the effect of biological (particularly microorganism).Biology in situ recovery technique have speed fast, disturb the remarkable advantages such as little, efficiency is high, cost is low and reaction conditions is gentle, become the important technology that groundwater pollution original position is repaired.But biology in situ recovery technique also exists some limitations.For example, the key that Polluted Groundwater can be repaired by microorganism in situ is the high reactivity that keeps corresponding microorganism, just can make the pollutent of underground water to be removed efficiently.
In recent years, microbiological fuel cell (Microbial Fuel Cell, MFC) technology is just becoming one of new ideas wastewater processing technology, and it can obtain electric energy in to wastewater treatment.MFC technology is repaired Polluted Groundwater (CN 102659237 A) to be used to original position.The method utilizes the microorganism of anolyte compartment that the reducing pollution katabolism in underground water is removed, and utilizes cathode compartment that the oxidative pollutant reduction in underground water is removed, and obtains electric energy simultaneously.In addition, the method is placed in cathode electrode the cathode compartment communicating with atmosphere, to overcome to the enforcement difficulty of adding electron acceptor(EA) in underground water, but electron acceptor(EA) in the method (airborne oxygen) is to enter cathode compartment by the mode of diffusion, electron acceptor(EA) supply rate is slow, and the solubleness of this electron acceptor(EA) in water is low, easily forms microbial film in cathode electrode surface simultaneously, thereby reduce cathodic reaction efficiency, and then reduced the removal efficiency of pollutent.In addition the Pb that, the method cannot be lower to reduction potential
2+, Ni
2+, hydrochloric ether and pentavalent uranium (U(V)) etc. pollutent remove.
Microorganism electrolysis cell (Microbial Electrolysis Cell, MEC) be a kind of new technology that has merged sewage disposal and produced the energy in recent years developing rapidly, can when being carried out a biological disposal upon, sewage obtain the multi-form energy, as the novel process of sewage disposal, cause extensive concern both domestic and external.In MEC without electron acceptor(EA) (O is provided
2), need be to the problem of adding electron acceptor(EA) in underground water thereby can avoid MFC original position to repair groundwater pollutant.The lower Pb of some reduction potentials that cannot remove in MFC in addition,
2+, Ni
2+, hydrochloric ether and U(V) etc. pollutent, can be removed at the negative electrode of MEC.
Summary of the invention
The utility model provides a kind of device that utilizes microorganism electrolysis cell technology original position to repair Polluted Groundwater, repair Polluted Groundwater and utilize microbiological fuel cell technology original position to repair Polluted Groundwater and need, to the problem of adding electron acceptor(EA) in underground water, can remove and utilize microbiological fuel cell technology original position to repair the lower Pb of some reduction potentials that cannot remove in Polluted Groundwater method to avoid traditional original position simultaneously
2+, Ni
2+, hydrochloric ether and U(V) etc. pollutent.
For addressing the above problem, the utility model adopts following technical scheme:
The utility model utilizes microorganism electrolysis cell technology original position to repair the device of Polluted Groundwater, it is characterized in that: the anolyte compartment of sealing and the cathode compartment of sealing are set in Polluted Groundwater, and the locular wall of anolyte compartment and cathode compartment all has aperture; In anolyte compartment and cathode compartment, place respectively anode electrode and cathode electrode; By the hot end of voltage stabilized source and cold end jointed anode electrode and cathode electrode respectively; Anode electrode and cathode electrode that Polluted Groundwater is flowed through in anolyte compartment and cathode compartment by the aperture of anolyte compartment and cathode compartment locular wall, reductibility organic pollutant in sewage is as being attached to the metabolism substrate of electrogenesis microorganism on anode electrode surface and the removal that is degraded, simultaneously under electricity is auxiliary, the H of anode electrode surface electrogenesis microbial metabolism organic contamination deposits yields
+with electronic migration to cathode compartment, and in cathode electrode surface in conjunction with producing H
2.In addition, the redox potential in underground water is reduced and removes in cathode electrode surface compared with some low oxidative pollutants.
Described anode electrode material is carbon cloth, graphite felt, reticulated vitreous carbon, graphite or carbon fiber brush.
Described cathode electrode material is carbon cloth, graphite felt, graphite or the carbon fiber brush that Pt modifies, or lead and copper.
The enrichment of described anode electrode surface electrogenesis microorganism is to be injected anaerobic activated sludge and removed oxygen substratum mixture by the anolyte compartment to having built up, the electric current maximum producing by the operation microorganism electrolysis cell of for some time and stable, for fully having adhered to electrogenesis microorganism in anode electrode surface.
The control of Electric potentials of described cathode electrode is-0.5V ~-2.0 V that the VD of described voltage stabilized source is-2.0V ~ 2.0V.
Can adopt the pollutent of the utility model device original position reparation be included in described in the reductive pollutants phenol in anolyte compartment and/or benzene, the lower oxidative pollutant nitrobenzene compounds of redox potential in cathode compartment pollutes and/or hydrochloric ether pollutes and/or U(V) pollute and/or Pb
2+pollute and/or Ni
2+pollute and/or lower concentration Cu
2+pollute.
For the underground water of repairing reductive pollutants phenol and/or benzene and polluting, make the Polluted Groundwater anolyte compartment that first flows through; For repairing oxidative pollutant nitrobenzene compounds and/or hydrochloric ether and/or U(V) and/or Pb
2+and/or Ni
2+and/or lower concentration Cu
2+the underground water polluting, makes the Polluted Groundwater cathode compartment of first flowing through; For the underground water that is reduced contact scar thing and oxidative pollutant and pollutes simultaneously, anolyte compartment and cathode compartment are arranged on the same cross section flowing to perpendicular to Polluted Groundwater simultaneously, and the underground water that makes to pollute first flow through cathode compartment and then the anolyte compartment that flows through.
Brief description of the drawings
Fig. 1 is the structural representation that the microorganism electrolysis cell anode of the utility model embodiment 1 is removed reductive pollutants.
Fig. 2 is that the microorganism electrolysis cell negative electrode of the utility model embodiment 2 is removed the lower CHCl of redox potential
3the structural representation of oxidative pollutant.
Embodiment
Below, by specific embodiment, by reference to the accompanying drawings the utility model is described in further details.
embodiment 1:
Fig. 1 is the structural representation that the microorganism electrolysis cell anode of the utility model embodiment 1 is removed reductive pollutants.The present embodiment is to utilize the reparation of microorganism electrolysis cell technology original position to be subject to phenol polluted underground water, specifically operates with step in the following order:
(1) at the subsurface in-situ construction microorganism electrolysis cell in Polluted Groundwater region
First bore two columniform holes in a distance on the ground in Polluted Groundwater region, two polyvinyl chloride pipes of bottom end seal, tube wall perforate are respectively put into and in cylindrical bore, form anolyte compartment 1 and cathode compartment 6; Carbon fiber is brushed to anode electrode 2 and put in the anolyte compartment 1 that polyvinyl chloride pipe forms, anode electrode 2 is by the hole on sealing cover 3, be connected with the noble potential of voltage stabilized source 5 through wire 4; Carbon fiber is brushed to cathode electrode 7 and put in the cathode compartment 6 that polyvinyl chloride pipe forms, cathode electrode 7 is by the hole on sealing cover 8, be connected with the low potential of voltage stabilized source 5 through wire 9; Be designed with sample feeding pipe 10 in the upper end of anolyte compartment 2, be designed with gas-collecting pipe 11 in the upper end of cathode compartment 6.
(2) enrichment of anode electrode surface electrogenesis microorganism
Taking the anaerobic activated sludge of sewage work as inoculum, the simulated wastewater of artificial preparation is substratum, pure nitrogen gas except after oxygen in 2:9(v/v) ratio be inoculated into the anolyte compartment 1 enrichment anode electrogenesis microorganism of microorganism electrolysis cell by sample feeding pipe 10.Microorganism electrolysis cell is batch operation, adds according to the above ratio the mixed solution of inoculum and substratum after each experiment finishes.Be fixed as-0.9V of the voltage of voltage stabilized source, regularly samples to the current data of microorganism electrolysis cell, after the electric current of microorganism electrolysis cell is maximum and stable, thinks and has fully adhered to electrogenesis microorganism on the surface of anode electrode 1.
Table 1 is simulated artificial wastewater's base fluid composition and content
Table 2 trace element solution composition and content
(3) the original position reparation of phenol polluted underground water
Treat anode electrode 2 the abundant enrichment in surface electrogenesis microorganism, now microorganism electrolysis cell can be used for original position repair phenol pollute underground water.The underground water that allows phenol pollute flow through successively anolyte compartment 1 and the cathode compartment 6 of microorganism electrolysis cell, the voltage of voltage stabilized source 5 is fixed as-0.9 V simultaneously.The underground water pollutant phenol of electrogenesis microbial metabolism of anode electrode 2 surface attachment produces CO
2, H
+and electronics, thereby remove pollutent, the H of generation
+to cathode compartment 6, assist lower H at electricity with electronic migration
+generate H with electronics in cathode electrode 7 surface bonding
2, concrete chemical equation is as follows:
Anode electrode
Cathode electrode
And the H producing
2collect through gas-collecting pipe 11.
embodiment 2:
Fig. 2 is the structural representation that the microorganism electrolysis cell negative electrode of the utility model embodiment 2 is removed the trichloromethane pollutent that redox potential is lower.The present embodiment is the underground water that utilizes the reparation of microorganism electrolysis cell technology original position polluted by trichloromethane, specifically operates with step in the following order:
(1) at the subsurface in-situ construction microorganism electrolysis cell in Polluted Groundwater region
First bore two columniform holes in a distance on the ground in Polluted Groundwater region, two polyvinyl chloride pipes of bottom end seal, tube wall perforate are respectively put into and in cylindrical bore, form anolyte compartment 1 and cathode compartment 6; Carbon fiber is brushed to anode electrode 2 and put in the anolyte compartment 1 that polyvinyl chloride pipe forms, anode electrode 2 is by the hole on sealing cover 3, be connected with the noble potential of voltage stabilized source 5 through wire 4; Cathode electrode 7 is put in the cathode compartment 6 that polyvinyl chloride pipe forms, and cathode electrode 7 is by the hole on sealing cover 8, be connected with the low potential of voltage stabilized source 5 through wire 9; Be designed with sample feeding pipe 10 in the upper end of anolyte compartment 2, be designed with gas-collecting pipe 11 in the upper end of cathode compartment 6.
(2) enrichment of anode electrode surface electrogenesis microorganism
The enrichment of anode electrode surface electrogenesis microorganism is with the enrichment of the anode electrode surface electrogenesis microorganism in example 1.
(3) the original position reparation of trichloromethane polluted underground water
Treat anode electrode 2 the abundant enrichment in surface electrogenesis microorganism, now microorganism electrolysis cell can be used for original position repair trichloromethane pollute underground water.Add manual simulation's waste water so that electron donor to be provided by continuous in sample feeding pipe 10 anode chambers 1 or interruption.The underground water that allows trichloromethane pollute flow through successively cathode compartment 6 and the anolyte compartment 1 of microorganism electrolysis cell, the voltage of voltage stabilized source 5 is fixed as-0.9 V simultaneously.Organism in the electrogenesis microbial metabolism manual simulation waste water of anode electrode 2 surface attachment produces CO
2, H
+and electronics, the H of generation
+to cathode compartment 6, assist lower trichloromethane, H at electricity with electronic migration
+react on cathode electrode 7 surfaces with electronics, concrete chemical equation is as follows:
Anode electrode
Cathode electrode
Finally it should be noted that: obviously, above-described embodiment is only for the utility model example is clearly described, and the not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all embodiments.And the apparent variation of being amplified out thus or variation are still among protection domain of the present utility model.
Claims (4)
1. utilize microorganism electrolysis cell technology original position to repair a device for Polluted Groundwater, it is characterized in that: be included in the anolyte compartment of the sealing arranging in Polluted Groundwater and the cathode compartment of sealing, the locular wall of anolyte compartment and cathode compartment all has aperture; In anolyte compartment and cathode compartment, place respectively anode electrode and cathode electrode; Anode electrode is connected with cold end with the hot end of voltage stabilized source respectively with cathode electrode; The surface attachment electrogenesis microorganism of described anode electrode.
2. the device that utilizes microorganism electrolysis cell technology original position to repair Polluted Groundwater as claimed in claim 1, is characterized in that: described anode electrode material is carbon cloth, graphite felt, reticulated vitreous carbon, graphite or carbon fiber brush.
3. the device that utilizes microorganism electrolysis cell technology original position to repair Polluted Groundwater as claimed in claim 1, is characterized in that: described cathode electrode material is carbon cloth, graphite felt, graphite or the carbon fiber brush that Pt modifies, or lead and copper.
4. the device that utilizes microorganism electrolysis cell technology original position to repair Polluted Groundwater as claimed in claim 1, is characterized in that: the upper end in anolyte compartment is provided with sample feeding pipe, is provided with gas-collecting pipe in the upper end of cathode compartment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420151230.3U CN203768095U (en) | 2014-03-31 | 2014-03-31 | Device for in-situ remediation of polluted groundwater by using microbial electrolysis cell process |
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|---|---|---|---|
| CN201420151230.3U CN203768095U (en) | 2014-03-31 | 2014-03-31 | Device for in-situ remediation of polluted groundwater by using microbial electrolysis cell process |
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|---|---|
| CN203768095U true CN203768095U (en) | 2014-08-13 |
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ID=51285309
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|---|---|---|---|
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801537A (en) * | 2015-04-09 | 2015-07-29 | 上海大学 | Electric-microbial combined remediation method for heavy metal contaminated soil |
| CN108007983A (en) * | 2017-12-29 | 2018-05-08 | 环境保护部南京环境科学研究所 | Utilize the apparatus and method of microbiological fuel cell evaluating water quality organic contamination situation |
| CN108503041A (en) * | 2018-03-20 | 2018-09-07 | 许昌学院 | A method of handling yuba wastewater using microorganism battery |
| CN111689571A (en) * | 2019-03-11 | 2020-09-22 | 北京化工大学 | Microbial electrochemical system and method for controlling hydrogen peroxide generation and elimination |
| CN111718039A (en) * | 2020-05-13 | 2020-09-29 | 中国地质大学（武汉） | Method and device for treating multiple kinds of chlorohydrocarbon composite pollution in underground water |
| 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 |
| CN113880234A (en) * | 2021-10-14 | 2022-01-04 | 中国科学院生态环境研究中心 | Method for continuously and efficiently removing and recycling uranium in water by using microbial electrolysis cell |
-
2014
- 2014-03-31 CN CN201420151230.3U patent/CN203768095U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801537A (en) * | 2015-04-09 | 2015-07-29 | 上海大学 | Electric-microbial combined remediation method for heavy metal contaminated soil |
| CN108007983A (en) * | 2017-12-29 | 2018-05-08 | 环境保护部南京环境科学研究所 | Utilize the apparatus and method of microbiological fuel cell evaluating water quality organic contamination situation |
| CN108007983B (en) * | 2017-12-29 | 2024-02-20 | 环境保护部南京环境科学研究所 | Device and method for evaluating organic pollution condition of water quality by using microbial fuel cell |
| CN108503041A (en) * | 2018-03-20 | 2018-09-07 | 许昌学院 | A method of handling yuba wastewater using microorganism battery |
| CN111689571A (en) * | 2019-03-11 | 2020-09-22 | 北京化工大学 | Microbial electrochemical system and method for controlling hydrogen peroxide generation and elimination |
| CN111718039A (en) * | 2020-05-13 | 2020-09-29 | 中国地质大学（武汉） | Method and device for treating multiple kinds of chlorohydrocarbon composite pollution in underground water |
| 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 |
| CN113880234A (en) * | 2021-10-14 | 2022-01-04 | 中国科学院生态环境研究中心 | Method for continuously and efficiently removing and recycling uranium in water by using microbial electrolysis cell |
| CN113880234B (en) * | 2021-10-14 | 2023-10-20 | 中国科学院生态环境研究中心 | Microbial electrolysis method for continuously and efficiently removing and recycling uranium in water |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20160331 |