Microbial fuel cell artificial wetland electrogenesis in-situ utilization water purification method

Abstract

The invention discloses a microbial fuel cell artificial wetland electrogenesis in-situ utilization water purification method. A microbial fuel cell artificial wetland electrogenesis in-situ utilization water purification device is set up, sewage flows in from a water inlet pipe at the bottom, and flows upwards into the bottom of a bed body after passing through a water distributing area, an anaerobic environment of the bottom layer of the bed body forms an anode region of a microbial fuel cell artificial wetland, an electrogenesis microorganism oxidizing organic substrate releases electrons and protons, the electrons are conducted upwards to the surface layer of the bed body through conductive filler, the protons are conducted upwards to the surface layer of the bed body through the sewage, an aerobic / hypoxia region of the surface layer serves as a cathode region of the microbial fuel cell artificial wetland, oxygen or nitrogen oxide and the like serving as electron acceptors are subjected to an oxidation reaction, and output water after being treated flows out through a water outlet pipe. The problems that as the distance between the two poles of a microbial fuel cell artificial wetland of a traditional external circuit is too large, internal resistance is too large, the electrogenesis rate is low and the purification effect is poor, and purification performance is promoted.

Description

technical field [0001] The invention belongs to a sewage treatment method, in particular to a water body purification method for in-situ utilization of microbial fuel cell artificial wetland power generation. Background technique [0002] With the acceleration of China's industrialization process, water pollution control is facing more and more challenges. Constructed wetland is a composite process combining natural purification and artificial enhancement. It can adopt an appropriate scale according to the amount of sewage to adapt to it. It can be used for direct treatment and advanced treatment of polluted water; constructed wetland and traditional secondary biochemical treatment Compared with it, it has the advantages of low construction and operation costs and simple maintenance, and is more suitable for sewage treatment in small towns or villages with low technical management level and small scale. On the premise of promoting a virtuous cycle of pollutants in wastewate...

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Problems solved by technology

[0004] The purpose of the present invention is to use the filling of conductive fillers to naturally divide the main filler area of ​​the constructed wetland into cathodes and anodes of microbial fuel cells, which solves the problem that traditional constructed wetlands are difficult to process sewage with high organic loads, and also solves the problem of traditional external circuits The problem of high internal resistance and poor purification effect of microbial fuel cell artificial wetland due to excessive distance between two electrodes

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