CN104176836A - Microorganism electrochemical device for in-situ remediation of polluted water and bottom mud and method for in-situ remediation of polluted water and bottom mud - Google Patents
Microorganism electrochemical device for in-situ remediation of polluted water and bottom mud and method for in-situ remediation of polluted water and bottom mud Download PDFInfo
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Abstract
The invention discloses a microorganism electrochemical device for in-situ remediation of polluted water and bottom mud and a method for in-situ remediation of polluted water and bottom mud, and relates to a microorganism electrochemical device and a method for in-situ remediation of polluted water and bottom mud. The invention aims at solving the problems that polluted water and bottom mud in rivers and lakes are complex to remedy, high in cost and high in maintenance cost by using an existing biological fuel battery. The microorganism electrochemical device comprises a cathode, an anode, a first lead, a second lead and a charge-discharge device. The method comprises the following steps: putting the anode of the microorganism electrochemical device for in-situ remediation of polluted water and bottom mud into polluted bottom mud, putting the cathode into polluted water above the polluted bottom mud, connecting the cathode and the anode with the cathode and the anode of the charge-discharge device by using the first lead and the second lead respectively, and operating for 18 days, thereby obtaining water and bottom mud from which pollutants are removed. The microorganism electrochemical device and the method can be applied to in-situ remediation of polluted water and bottom mud.
Description
Technical field
The present invention relates to a kind of microorganism electrochemical device and original position and repair the method for polluted-water and bed mud.
Background technology
Contaminated settling can be kicked up again under hydrodynamic condition and bioturbation to be occurred to suspend again, and the pollution substance being adsorbed on suspended sediment is entered in aerobic environment and will be discharged again by oxygen-free environment, and water surrounding is caused to secondary pollution.When upper strata water quality obviously improves, the pollutent in bed mud also can discharge to upper strata water body.Ash river is the one-level tributary of main stream of Songhua River right bank, Acheng District-enter preserved egg Jiangkou, and long 61.25km, water surrounding function zoning is IV class.Therefore, very urgent for the repair of the polluted water bodies such as Ash river and bed mud.
Microbiological fuel cell (MFC) is a kind of bioelectrochemistry system that chemical energy is converted into electric energy, is mainly to utilize microorganism decomposing biomass, obtains a kind of bioelectrochemistry technology of electrogenesis simultaneously.The groundwork principle of microbiological fuel cell is: in anaerobic environment, electrogenesis bacterium is decomposed organic matter, produces proton (H
+) and electronics (e
-), proton and electronics transmit respectively and arrive negative electrode and is combined with final electron acceptor(EA), form a complete circuit cycles, thus generation current, voltage, output rating.
Settling microbiological fuel cell (Sediment Microbial Fuel Cells, SMFs), is a kind of typical bioelectrochemistry system, and this technology is applied to can obtain electric energy in organic abundant settling.Its mechanism of action is: anode material is positioned in the settling of anaerobism, cathode material is arranged in the aerobic water in upper strata, between negative electrode and anode, by wire, be connected with resistance, in settling, organism is deposited indigenous microorganism oxygenolysis in thing near positive column, the electronics producing is delivered to anode, through external circuit, arrive negative electrode again, oxygen in cathodic area and the proton transmitting from positive column are combined and are generated water, thereby realize in removing settling in organic pollutant the object of recovered energy again.At present, settling microbiological fuel cell is considered to two main Application Areass and is: the long term monitoring instrument of ocean or Inland Water provides lower powered power supply; As a kind of novel, efficient settling biology in situ recovery technique.Seriously polluted for current little river and bottom mud in lake, need the sludge handling method of effective engineering application on a large scale badly.At present, catalyzer is expensive, and electrode fabrication cost is high, and under the rear voltage of expansion and output rating, degradation factors has limited the widespread use of microbiological fuel cell.SMFC as a kind of novel, efficient sludge handling method equally because its higher cost and maintenance cost make it be difficult to realize large-scale application.Therefore the present invention proposes a kind of low cost, and the high efficiency bioelectrochemistry system that is applied to river course and bottom mud in lake reparation, is applicable to engineering application, promotes.
Summary of the invention
The object of the invention is in order to solve existing biofuel cell reparation river course and lake pollution water body and bed mud loaded down with trivial details, cost height and the high problem of maintenance cost, and the microorganism electrochemical device of a kind of original position reparation polluted-water and bed mud and the method that original position is repaired polluted-water and bed mud are provided.
Original position is repaired a microorganism electrochemical device for polluted-water and bed mud, and it comprises negative electrode, anode, the first wire, the second wire and charge and discharge device;
Described negative electrode is to be formed by the compacting of roll-in method by cathode catalysis layer and stainless (steel) wire; Anode is to be fitted in propping material surface by carbon cloth, re-uses titanium silk carbon cloth and propping material are fixed, and obtains the propping material after titanium silk is fixed; Propping material after every two titanium silks are fixing carries out pressing at interval of 19cm～21cm, makes anode;
Described negative electrode is connected with the negative pole of charge and discharge device by the first wire, and anode is connected with the positive pole of charge and discharge device by the second wire.
Utilize the microorganism electrochemical device original position reparation polluted-water of a kind of original position reparation polluted-water and bed mud and the method steps of bed mud as follows:
The anode of a kind of original position being repaired to the microorganism electrochemical device of polluted-water and bed mud is placed in contaminated bed mud, negative electrode is placed in contaminated bed mud upper strata polluted-water, use the first wire with the second wire, negative electrode to be connected with positive pole with the negative pole of charge and discharge device respectively with anode, be 18d working time, the bed mud that obtains removing the water body of pollutent and remove pollutent.
Principle of work of the present invention and advantage:
One, anode enrichment electrogenesis bacterium of the present invention is mainly used carbon cloth, without catalyzer, has overcome the expensive or shortcoming to the risky catalyzer of environment of the many uses of membraneless microbiological fuel cell MFC electrode;
Two, anode-supported material has three-dimensional arrangement, bed mud is had to fixed action, make anode by two-dimentional interface interaction, become 3 D stereo effect to sedimental repair simultaneously, overcome conventional anode only in the effective defect of certain level mask, the speed that the greatly sphere of action of the increasing anode of degree, and then raising is removed pollutants in sediments;
Three, the bioelectrochemistry system that the present invention is applied to bed mud reparation can effectively be removed the organic carbon in Sediments, organic nitrogen and organic phosphor contaminant, moves chemical oxygen demand COD clearance in 20 days Sediments and can reach more than 60%;
Four, the present invention can be widely used in contaminated lake, and the pollution of the bed muds such as the river channel in town and country and farmland, irrigation canals and ditches and water body is removed, and Environmental Safety cost is low, safeguards simple;
Five, the charge and discharge device of the present invention's design, can realize automatization and control, and the electric energy that bioelectrochemistry system is produced is effectively collected storage, is applied to Landscape Lighting;
Six, in settling, organism is deposited indigenous microorganism oxygenolysis in thing near positive column, the electronics producing is delivered to anode, through external circuit, arrive negative electrode again, oxygen in cathodic area and the proton transmitting from positive column are combined and are generated water, thereby realize in removing settling in organic pollutant the object of recovered energy again.
The present invention can be used for original position and repairs polluted-water and bed mud.
Accompanying drawing explanation
Fig. 1 is the structural representation that a kind of original position described in embodiment one is repaired the microorganism electrochemical device of polluted-water and bed mud;
Fig. 2 is the structural representation of negative electrode in Fig. 1, and in figure, A representative is suppressed by roll-in method;
Fig. 3 is the structural representation of Fig. 1 Anodic, and in figure, B representative is fitted, and in figure, pressing is carried out in C representative;
Fig. 4 is the voltage change graphic representation that microorganism electrochemical device original position under external resistance 1000 Ω and 10 Ω of utilizing a kind of original position to repair polluted-water and bed mud is repaired polluted-water and bed mud;
Fig. 5 is COD content curve over time in water;
Fig. 6 is total phosphorus and solubility orthophosphoric acid salt curve over time in water, and in Fig. 6,1 is total phosphorus curve over time in water, and 2 is solubility orthophosphoric acid salt curve over time in water;
Fig. 7 is total nitrogen and ammonia nitrogen curve over time in water, and in Fig. 7,1 is total nitrogen curve over time, and 2 is ammonia nitrogen curve over time;
Fig. 8 is bed mud organic content histogram; In Fig. 8,1 is the TOC value of the contaminated bed mud of Ash river, Harbin Song Hua River water inlet section, and 2 for using original position to repair the contaminated bed mud of Ash river, the Harbin Song Hua River water inlet section TOC value of the 36th day of the microorganism electrochemical device processing of polluted-water and bed mud; 3 for using original position to repair the contaminated bed mud of Ash river, the Harbin Song Hua River water inlet section TOC value of the 54th day of the microorganism electrochemical device processing of polluted-water and bed mud; 4 for using original position to repair the contaminated bed mud of Ash river, the Harbin Song Hua River water inlet section TOC value of the 76th day of the microorganism electrochemical device processing of polluted-water and bed mud; 5 for not using original position to repair the contaminated bed mud of Ash river, the Harbin Song Hua River water inlet section TOC value of the 36th day of the microorganism electrochemical device processing of polluted-water and bed mud; 6 for not using original position to repair the contaminated bed mud of Ash river, the Harbin Song Hua River water inlet section TOC value of the 54th day of the microorganism electrochemical device processing of polluted-water and bed mud; 7 for not using original position to repair the contaminated bed mud of Ash river, the Harbin Song Hua River water inlet section TOC value of the 76th day of the microorganism electrochemical device processing of polluted-water and bed mud.
Embodiment
Embodiment one: in conjunction with Fig. 1, present embodiment is the microorganism electrochemical device that a kind of original position is repaired polluted-water and bed mud, and it comprises negative electrode 1, anode 2, the first wire 3, the second wire 4 and charge and discharge device 5;
Described negative electrode 1 is to be formed by the compacting of roll-in method by cathode catalysis layer 6 and stainless (steel) wire 7; Anode 2 is to be fitted in propping material 9 surfaces by carbon cloth 8, re-uses titanium silk carbon cloth 8 and propping material 9 is fixing, obtains the propping material 14 after titanium silk is fixed; Propping material 14 after every two titanium silks are fixing carries out pressing at interval of 19cm～21cm, makes anode 2;
Described negative electrode 1 is connected with the negative pole of charge and discharge device 5 by the first wire 3, and anode 2 is connected with the positive pole of charge and discharge device 5 by the second wire 4.
Fig. 1 is the structural representation that a kind of original position described in embodiment one is repaired the microorganism electrochemical device of polluted-water and bed mud; In Fig. 1,1 is negative electrode, and 2 is anode, and 3 is the first wire, and 4 is the second wire, and 5 is circuit assembly;
Fig. 2 is the structural representation of negative electrode in Fig. 1, and in figure, A representative is suppressed by roll-in method; In Fig. 2,1 is negative electrode, and 6 is cathode catalysis layer, and 7 is stainless (steel) wire;
Fig. 3 is the structural representation of Fig. 1 Anodic, and in figure, B representative is fitted, and in figure, pressing is carried out in C representative; In Fig. 3,2 is anode, and 8 is carbon cloth, and 9 is propping material, and 14 is the propping material of titanium silk after fixing.
The principle of work of present embodiment and advantage:
One, present embodiment anode 2 enrichment electrogenesis bacterium are mainly used carbon cloth 8, without catalyzer, have overcome the expensive or shortcoming to the risky catalyzer of environment of the many uses of membraneless microbiological fuel cell MFC electrode;
Two, anode 2 propping materials have three-dimensional arrangement, bed mud is had to fixed action, make 2 pairs of sedimental repairs of anode become 3 D stereo effect by two-dimentional interface interaction simultaneously, overcome 2 of conventional anode in the effective defect of certain level mask, the speed that the greatly sphere of action of the increasing anode 2 of degree, and then raising is removed pollutants in sediments;
Three, the bioelectrochemistry system that present embodiment is applied to bed mud reparation can effectively be removed the organic carbon in Sediments, organic nitrogen and organic phosphor contaminant, moves chemical oxygen demand COD clearance in 20 days Sediments and can reach more than 60%;
Four, present embodiment can be widely used in contaminated lake, and the pollution of the bed muds such as the river channel in town and country and farmland, irrigation canals and ditches and water body is removed, and Environmental Safety cost is low, safeguards simple;
Five, the charge and discharge device of present embodiment design, can realize automatization and control, and the electric energy that bioelectrochemistry system is produced is effectively collected storage, is applied to Landscape Lighting;
Six, in settling organism near anode 2nd district, be deposited thing in indigenous microorganism oxygenolysis, the electronics producing is delivered to anode 2, through external circuit, arrive negative electrode 1 again, oxygen in negative electrode 1st district and the protons that transmit from anode 2nd district are combined and are generated water, thereby realize in removing settling in organic pollutant the object of recovered energy again.
Present embodiment can be used for original position and repairs polluted-water and bed mud.
Embodiment two: present embodiment and embodiment one difference are: described anode 2 is for cellular.Other steps are identical with embodiment one.
Embodiment three: present embodiment and one of embodiment one or two difference are: described roll-in method specifically completes according to the following steps: one, prepare tackiness agent: ultrasonic 30min under the condition that is 100W at power by polytetrafluoroethylsolution solution and graphitized carbon black, obtains tackiness agent; Wherein, described polytetrafluoroethylsolution solution concentration is 60%; The volume of described polytetrafluoroethylsolution solution and the mass ratio of graphitized carbon black are 1mL:9g;
Two, apply: tackiness agent is coated in to cathode catalysis layer 6 surfaces upper, coating thickness is 0.4mm～0.5mm, then stainless (steel) wire 7 is placed on the cathode catalysis layer 6 after application of adhesive, obtains negative electrode.Other steps are identical with embodiment one or two.
Embodiment four: one of present embodiment and embodiment one to three difference is: the material of the first described wire 3 is titanium silk.Other steps are identical with embodiment one to three.
Embodiment five: one of present embodiment and embodiment one to four difference is: the material of the second described wire 4 is titanium silk.Other steps are identical with embodiment one to four.
Embodiment six: one of present embodiment and embodiment one to five difference is: the material of described propping material 9 is polyethylene.Other steps are identical with embodiment one to five.
Embodiment seven: it is as follows that present embodiment is that the microorganism electrochemical device original position of utilizing a kind of original position to repair polluted-water and bed mud is repaired the method steps of polluted-water and bed mud:
The anode 2 of a kind of original position being repaired to the microorganism electrochemical device of polluted-water and bed mud is placed in contaminated bed mud, negative electrode 1 is placed in contaminated bed mud upper strata polluted-water, use the first wire 3 with the second wire 4, negative electrode 1 to be connected with positive pole with the negative pole of charge and discharge device 5 respectively with anode 2, be 18d working time, the bed mud that obtains removing the water body of pollutent and remove pollutent.
The principle of work of present embodiment and advantage:
One, present embodiment anode 2 enrichment electrogenesis bacterium are mainly used carbon cloth 8, without catalyzer, have overcome the expensive or shortcoming to the risky catalyzer of environment of the many uses of membraneless microbiological fuel cell MFC electrode;
Two, anode 2 propping materials have three-dimensional arrangement, bed mud is had to fixed action, make 2 pairs of sedimental repairs of anode become 3 D stereo effect by two-dimentional interface interaction simultaneously, overcome 2 of conventional anode in the effective defect of certain level mask, the speed that the greatly sphere of action of the increasing anode 2 of degree, and then raising is removed pollutants in sediments;
Three, the bioelectrochemistry system that present embodiment is applied to bed mud reparation can effectively be removed the organic carbon in Sediments, organic nitrogen and organic phosphor contaminant, moves chemical oxygen demand COD clearance in 20 days Sediments and can reach more than 60%;
Four, present embodiment can be widely used in contaminated lake, and the pollution of the bed muds such as the river channel in town and country and farmland, irrigation canals and ditches and water body is removed, and Environmental Safety cost is low, safeguards simple;
Five, the Circuits System of present embodiment design, can realize automatization and control, and the electric energy that bioelectrochemistry system is produced is effectively collected storage, is applied to Landscape Lighting;
Six, in settling organism near anode 2nd district, be deposited thing in indigenous microorganism oxygenolysis, the electronics producing is delivered to anode 2, through external circuit, arrive negative electrode 1 again, oxygen in negative electrode 1st district and the protons that transmit from anode 2nd district are combined and are generated water, thereby realize in removing settling in organic pollutant the object of recovered energy again.
Present embodiment can be used for original position and repairs polluted-water and bed mud.
Embodiment eight: present embodiment and embodiment seven differences are: the pollutent in described polluted bed mud is one or more the mixture in organic carbon, organonitrogen and organophosphorus.Other steps are identical with embodiment seven.
Adopt following verification experimental verification beneficial effect of the present invention:
Test one: utilize the microorganism electrochemical device original position reparation polluted-water of a kind of original position reparation polluted-water and bed mud and the method steps of bed mud as follows:
Get Ash river, the 150L Harbin contaminated bed mud of Song Hua River water inlet section and be placed in reactor, then add 200L water in reactor; The anode 2 of again a kind of original position being repaired to the microorganism electrochemical device of polluted-water and bed mud is placed in contaminated bed mud, negative electrode 1 is placed in contaminated bed mud upper strata polluted-water, use the first wire 3 with the second wire 4, negative electrode 1 to be connected with positive pole with the negative pole of charge and discharge device 5 respectively with anode 2, operation reactor.
In test one, when reactor start-up 0h～210h, external resistance is 1000 Ω, uses universal meter to record average voltage in reactor and remains on 575mV left and right; When reactor operation 207h, external resistance 1000 Ω are replaced with to 10 Ω, the voltage in reactor obviously declines, and minimum voltage value is 176mV, and average voltage is 290mV; As shown in Figure 4, Fig. 4 is the voltage change graphic representation that microorganism electrochemical device original position under external resistance 1000 Ω and 10 Ω of utilizing a kind of original position to repair polluted-water and bed mud is repaired polluted-water and bed mud; As can be seen from Figure 4, along with the reactor increase of working time, voltage has slowly to be increased; This be because, the organic and abundant microorganism in the contaminated bed mud of Ash river, Harbin Song Hua River water inlet section has higher trigger voltage while causing reactor start-up, when in contaminated bed mud, organic content is higher, voltage raises to some extent; When the microorganism electrochemical device original position of utilizing a kind of original position to repair polluted-water and bed mud, repair polluted-water and bed mud after for some time, the organic content in polluted water body and contaminated bed mud declines, voltage slow decreasing; In this test, cathode area is 0.1m
2, the maximum power density that negative electrode obtains is 66.177mW/m
2.
Test two: the microorganism electrochemical device that utilizes a kind of original position to repair polluted-water and bed mud specifically completes according to the following steps to pollutant removal test in water body:
Get Ash river, the 150L Harbin contaminated bed mud of Song Hua River water inlet section and be placed in reactor, then add 200L pure water in reactor; The anode 2 of again a kind of original position being repaired to the microorganism electrochemical device of polluted-water and bed mud is placed in contaminated bed mud, negative electrode 1 is placed in contaminated bed mud upper strata polluted-water, use the first wire 3 with the second wire 4, negative electrode 1 to be connected with positive pole with the negative pole of charge and discharge device 5 respectively with anode 2, operation reactor, after reactor start-up, starting to carry out COD mensuration, was wherein one-period every 18 days, by the end of postrun the 76th day, was the 4th cycle; As can be seen from Figure 6, the COD of the water before first period treatment is 170mg/L, and through the processing in first cycle, water outlet COD is down to 30mg/L;
Investigate microorganism electrochemical device that a kind of original position repairs polluted-water and the bed mud removal effect to pollutent, in starting the 19th day and 36 days of reactor, add respectively the sanitary sewage of chemical oxygen demand (COD) 300mg/L, as shown in Fig. 5, Fig. 6 and Fig. 7; Fig. 5 is COD content curve over time in water; Fig. 6 is total phosphorus and solubility orthophosphoric acid salt curve over time in water, and in Fig. 6,1 is total phosphorus curve over time in water, and 2 is solubility orthophosphoric acid salt curve over time in water; Fig. 7 is total nitrogen and ammonia nitrogen curve over time in water, and in Fig. 7,1 is total nitrogen curve over time, and 2 is ammonia nitrogen curve over time;
As can be seen from Figure 5, after the processing in four cycles, detect the water outlet after the period 4 processes, find that this test is better to COD removal effect in water, clearance can reach more than 90%; Detect total phosphorus and solubility orthophosphoric acid salt in the water outlet after the period 4 processes, as can be seen from Figure 6, this test is better to phosphorus removal effect in water, and clearance can reach more than 80%; Add nitrogen in reactor after, as can be seen from Figure 7, in for some time, nitrogen can be detected, and along with the increase in treatment time, after the 4th period treatment, in water outlet, ammonia nitrogen removal frank approaches 99%, water outlet nitrogen removal rate can reach more than 92%, and this test is desirable to the removal effect of nitrogen.
Detect test two and utilize microorganism electrochemical device that a kind of original position repairs polluted-water and the bed mud removal effect to total organic matter TOC in bed mud in water body, detect respectively the organic TOC value in bed mud of testing for the 36th day, the 54th day and the 76th day after test two reactor start-ups;
The microorganism electrochemical device that does not utilize a kind of original position to repair polluted-water and bed mud to the concrete operations of the removal effect of total organic matter TOC in bed mud in water body is: get Ash river, the 150L Harbin contaminated bed mud of Song Hua River water inlet section and be placed in reactor, then add 200L pure water water in reactor; Detect the 36th day, organic TOC value in the 54th day and the 76th day bed mud; As shown in Figure 8, Fig. 8 is bed mud organic content histogram; In Fig. 8,1 is the TOC value of the contaminated bed mud of Ash river, Harbin Song Hua River water inlet section, and 2 for using original position to repair the contaminated bed mud of Ash river, the Harbin Song Hua River water inlet section TOC value of the 36th day of the microorganism electrochemical device processing of polluted-water and bed mud; 3 for using original position to repair the contaminated bed mud of Ash river, the Harbin Song Hua River water inlet section TOC value of the 54th day of the microorganism electrochemical device processing of polluted-water and bed mud; 4 for using original position to repair the contaminated bed mud of Ash river, the Harbin Song Hua River water inlet section TOC value of the 76th day of the microorganism electrochemical device processing of polluted-water and bed mud; 5 for not using original position to repair the contaminated bed mud of Ash river, the Harbin Song Hua River water inlet section TOC value of the 36th day of the microorganism electrochemical device processing of polluted-water and bed mud; 6 for not using original position to repair the contaminated bed mud of Ash river, the Harbin Song Hua River water inlet section TOC value of the 54th day of the microorganism electrochemical device processing of polluted-water and bed mud; 7 for not using original position to repair the contaminated bed mud of Ash river, the Harbin Song Hua River water inlet section TOC value of the 76th day of the microorganism electrochemical device processing of polluted-water and bed mud;
As shown in Figure 8, utilize the microorganism electrochemical device of a kind of original position reparation polluted-water and bed mud obvious to the removal effect of total organic matter TOC in bed mud in water body; Increase along with the treatment time, in bed mud, organic content obviously declines, and do not utilize microorganism electrochemical device that a kind of original position repairs polluted-water and the bed mud DeGrain to total organic matter TOC in bed mud in water body, illustrate and utilize the microorganism electrochemical device of a kind of original position reparation polluted-water and bed mud to remove organic matter in bed mud, move after 20 days, the organic carbon clearance in bed mud can reach more than 60%.
Claims (8)
1. original position is repaired a microorganism electrochemical device for polluted-water and bed mud, it is characterized in that it comprises negative electrode (1), anode (2), the first wire (3), the second wire (4) and charge and discharge device (5);
Described negative electrode (1) is to be formed by the compacting of roll-in method by cathode catalysis layer (6) and stainless (steel) wire (7); Anode (2) is to be fitted in propping material (9) surface by carbon cloth (8), re-uses titanium silk carbon cloth (8) and propping material (9) is fixing, obtains the propping material (14) after titanium silk is fixed; Propping material (14) after every two titanium silks are fixing carries out pressing at interval of 19cm～21cm, makes anode (2);
Described negative electrode (1) is connected with the negative pole of charge and discharge device (5) by the first wire (3), and anode (2) is connected with the positive pole of charge and discharge device (5) by the second wire (4).
2. a kind of original position according to claim 1 is repaired the microorganism electrochemical device of polluted-water and bed mud, it is characterized in that described anode (2) is for cellular.
3. a kind of original position according to claim 1 is repaired the microorganism electrochemical device of polluted-water and bed mud, it is characterized in that what described roll-in method specifically completed according to the following steps: one, prepare tackiness agent: ultrasonic 30min under the condition that is 100W at power by polytetrafluoroethylsolution solution and graphitized carbon black, obtains tackiness agent; Wherein, described polytetrafluoroethylsolution solution concentration is 60%; The volume of described polytetrafluoroethylsolution solution and the mass ratio of graphitized carbon black are 1mL:9g;
Two, apply: tackiness agent is coated on cathode catalysis layer (6) surface, and coating thickness is 0.4mm～0.5mm, then the cathode catalysis layer (6) that stainless (steel) wire (7) is placed in after application of adhesive is upper, obtains negative electrode.
4. a kind of original position according to claim 1 is repaired the microorganism electrochemical device of polluted-water and bed mud, it is characterized in that the material of described the first wire (3) is titanium silk.
5. a kind of original position according to claim 1 is repaired the microorganism electrochemical device of polluted-water and bed mud, it is characterized in that the material of described the second wire (4) is titanium silk.
6. a kind of original position according to claim 1 is repaired the microorganism electrochemical device of polluted-water and bed mud, it is characterized in that the material of described propping material (9) is polyethylene.
7. the method that the microorganism electrochemical device original position of utilizing a kind of original position to repair polluted-water and bed mud is repaired polluted-water and bed mud, is characterized in that utilizing the microorganism electrochemical device original position reparation polluted-water of a kind of original position reparation polluted-water and bed mud and the method steps of bed mud as follows:
The anode (2) of a kind of original position being repaired to the microorganism electrochemical device of polluted-water and bed mud is placed in contaminated bed mud, negative electrode (1) is placed in contaminated bed mud upper strata polluted-water, use the first wire (3) with the second wire (4), negative electrode (1) to be connected with positive pole with the negative pole of charge and discharge device (5) respectively with anode (2), be 18d working time, the bed mud that obtains removing the water body of pollutent and remove pollutent.
8. the method for utilizing microorganism electrochemical device original position that a kind of original position is repaired polluted-water and bed mud to repair polluted-water and bed mud according to claim 7, is characterized in that pollutent in described polluted bed mud is one or more the mixture in organic carbon, organonitrogen and organophosphorus.
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