Device and method for degrading landfill leachate based on microbial fuel cell-Fenton system

A landfill leachate and fuel cell technology, which is applied in the field of refractory pollutant treatment, can solve the problems of difficult landfill leachate treatment, low treatment technology efficiency, and low treatment efficiency, so as to promote sustainable economic development and alleviate water shortages , no secondary pollution effect

Active Publication Date: 2021-01-22
中建一局集团安装工程有限公司 +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If traditional biological methods are used to treat landfill leachate, there will be problems such as low treatment efficiency, high cost, and secondary pollution.
[0003] Aiming at the current difficulties in the treatment of landfill leachate and the low efficiency and high cost of treatment technology, consider combining biological treatment methods with electrochemical methods, and use a new concept of bio-electrocatalysis to efficiently treat landfill leachate

Method used

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  • Device and method for degrading landfill leachate based on microbial fuel cell-Fenton system
  • Device and method for degrading landfill leachate based on microbial fuel cell-Fenton system
  • Device and method for degrading landfill leachate based on microbial fuel cell-Fenton system

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Embodiment 1

[0023] Such as Figure 1-2 As shown, the degradation device for landfill leachate based on the microbial fuel cell-Fenton system according to a preferred embodiment of the present invention includes: a fuel cell housing 1, an anode electrode 2, two groups of first cathode electrodes 3, 4 and a group A second cathode electrode 5 , microbial fuel cells (MFCs), a first external circuit, a second external circuit, a first resistance box 6 and a second resistance box 7 . The fuel cell casing 1 is provided with a left chamber 11 and a right chamber 12, the left chamber 11 and the right chamber 12 are separated by a proton exchange membrane 13, the left chamber 11 is a closed chamber, The right chamber 12 is an open chamber. The left chamber 11 is the anode chamber of the electric Fenton system, the right chamber 12 is the cathode chamber of the electric Fenton system, and the left chamber 11 is provided with a microbial fuel cell, through the action of microorganisms 14 to generate...

Embodiment 2

[0025] In a preferred embodiment, the left chamber 11 and the right chamber 12 are symmetrically equal, and the dimensions of the left chamber 11 and the right chamber 12 are both 8cm×6cm×5cm. The electrode materials of the anode electrode 2 and the first two groups of cathode electrodes 3 and 4 are 4-5 pieces of carbon felt with a thickness of 2 mm and a size of 4.5 cm×5.0 cm. The electrode material of the second cathode electrode 5 is an iron sheet with a thickness of 2 mm and a size of 3 cm×4 cm. The anode electrode 2 is connected to the first group of cathode electrodes 3 through wires, and the second cathode electrode 5 is connected to the second group of first cathode electrodes 4 through wires.

[0026] In a preferred embodiment, the anode chamber is provided with a movable cover plate, and the fuel cell casing is made of plexiglass, and is fixed and sealed with silica gel pads and screws.

[0027] In a preferred embodiment, the landfill leachate degradation device bas...

Embodiment 3

[0044] The present invention also provides a method for degrading landfill leachate based on a microbial fuel cell-Fenton system, comprising the steps of: constructing an anode chamber and a cathode chamber of an electric Fenton system, and the anode chamber and the cathode chamber are separated by a proton exchange membrane set up microbial fuel cells and anode electrodes in the anode chamber of the electric Fenton system; set two sets of carbon felt electrodes and a set of iron sheet electrodes in the cathode chamber of the electric Fenton system, and pass a set of carbon felt electrodes and anode electrodes through The first external circuit is connected, and another group of carbon felt electrodes and iron sheet electrodes are connected through the second external circuit; the electrogenic bacteria gather on the anode electrode, and the electrons generated by the electrogenic bacteria in the process of degrading organic matter pass through the first external circuit. The ci...

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Abstract

The invention discloses a degradation device and method for landfill leachate based on a microbial fuel cell-Fenton system, wherein the degradation device comprises: a left side chamber and a right side chamber, which are separated by a proton exchange membrane, wherein the left side chamber is an anode chamber of an electro-Fenton system, the right side chamber is a cathode chamber of the electro-Fenton system, and the left side chamber is a cathode chamber of the electro-Fenton system, a microbial fuel cell is arranged in the left side chamber, and voltage is provided for the electro-Fentonsystem under the action of microorganisms; an anode electrode, which is arranged in the left side chamber; two groups of first cathode electrodes and the one group of second cathode electrodes, whichare arranged in the right side cavity at intervals, wherein one group of first cathode electrodes is connected with the anode electrodes through a first external circuit, and the other group of firstcathode electrodes is connected with the second cathode electrodes through a second external circuit; and afirst resistance box and a second resistance box. According to the invention, the microbial fuel cell and the electro-Fenton system are coupled, and the method has the characteristics of efficient degradation, energy saving and no secondary pollution.

Description

technical field [0001] The invention relates to the technical field of refractory pollutant treatment, in particular to a device and method for degrading landfill leachate based on a microbial fuel cell-Fenton system. Background technique [0002] With the acceleration of urbanization and modernization, people's living standards are gradually improving, the scale of cities continues to expand, and the urban population continues to grow. At the same time, a large amount of production and domestic waste is produced, and the phenomenon of "garbage siege" is becoming more and more serious. According to the China Statistical Yearbook, in the past ten years, the amount of urban domestic garbage removal and transportation in the country has increased at a rate of 1%-7% per year, and a large amount of garbage has produced a large amount of landfill leachate. Landfill leachate is usually brown or black and accompanied by foul odor. The water quality is affected by many factors. The f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00C02F3/34H01M8/16C02F1/72C02F103/06
CPCC02F3/005C02F3/34C02F1/722H01M8/16C02F2103/06C02F2305/026Y02E60/50
Inventor 孟庆礼杨利伟孙征周大伟江旺邢雯雯赵艳王少云窦寅博王永立
Owner 中建一局集团安装工程有限公司
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