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A microbial electrochemical device for in-situ remediation of polluted water and sediment and a method for in-situ remediation of polluted water and sediment

A microbial electrochemical and in-situ remediation technology, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as high cost, high maintenance cost, and cumbersome sediment. Achieve the effect of improving the removal speed, environmental protection and safety cost, and increasing the scope of action

Active Publication Date: 2015-08-19
HARBIN INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a microbial electrochemical device for in-situ repairing of polluted water and sediment in order to solve the problems of cumbersome, high cost and high maintenance costs for existing biofuel cells to restore polluted water and sediment in rivers and lakes. Method for in-situ remediation of polluted water bodies and sediments

Method used

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  • A microbial electrochemical device for in-situ remediation of polluted water and sediment and a method for in-situ remediation of polluted water and sediment
  • A microbial electrochemical device for in-situ remediation of polluted water and sediment and a method for in-situ remediation of polluted water and sediment
  • A microbial electrochemical device for in-situ remediation of polluted water and sediment and a method for in-situ remediation of polluted water and sediment

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specific Embodiment approach 1

[0027] Specific implementation mode one: combine figure 1 , this embodiment is a microbial electrochemical device for in-situ restoration of polluted water and sediment, which includes a cathode 1, an anode 2, a first wire 3, a second wire 4 and a charging and discharging device 5;

[0028] The cathode 1 is formed by pressing the cathode catalytic layer 6 and the stainless steel mesh 7 by rolling; the anode 2 is bonded to the surface of the support material 9 by the carbon fiber cloth 8, and then the carbon fiber cloth 8 and the support material 9 are bonded together by titanium wire. Fixing to obtain the support material 14 fixed by the titanium wire; every two support materials 14 fixed by the titanium wire are pressed at intervals of 19 cm to 21 cm to obtain the anode 2;

[0029] The cathode 1 is connected to the negative pole of the charging and discharging device 5 through the first wire 3 , and the anode 2 is connected to the positive pole of the charging and discharging...

specific Embodiment approach 2

[0041] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the anode 2 is honeycomb-shaped. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0042] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the rolling method is specifically completed according to the following steps: 1. Preparation of adhesive: polytetrafluoroethylene solution and conductive Carbon black is ultrasonic 30min under the condition of power 100W, obtains adhesive; Wherein, described polytetrafluoroethylene solution concentration is 60%; The mass ratio of the volume of described polytetrafluoroethylene solution and conductive carbon black is 1mL: 9g;

[0043] 2. Coating: the binder is coated on the surface of the cathode catalytic layer 6, and the coating thickness is 0.4 mm to 0.5 mm, and then the stainless steel mesh 7 is placed on the cathode catalyst layer 6 coated with the binder to obtain cathode. Other steps are the same as those in Embodiment 1 or 2.

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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 [0001] The invention relates to a microbial electrochemical device and a method for in-situ restoration of polluted water and bottom mud. Background technique [0002] The polluted sediment can be lifted up and re-suspended under the action of hydrodynamic conditions and bioturbation, and the pollutants adsorbed on the suspended sediment will be released again from the anaerobic environment into the aerobic environment. The water environment causes secondary pollution. When the water quality of the upper water body is significantly improved, the pollutants in the sediment will also be released to the upper water body. Ashi River is a first-class tributary on the right bank of the main stream of Songhua River. It enters the mouth of Songhua River from Acheng District, with a length of 61.25km. The water environment function zone is classified as Class IV. Therefore, it is urgent to restore the polluted water bodies and sediments such as the Ash River. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34
Inventor 冯玉杰李鹤男田言曲有鹏董跃
Owner HARBIN INST OF TECH
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