Polluted water body in-situ restoration microbial oxidation reduction device and restoration method

Abstract

The invention relates to a polluted water body in-situ restoration microbial oxidation reduction device and a restoration method. The microbial oxidation reduction device comprises a microbial oxidation reduction restoration system and an ecological function reinforced constructed wetland system; the microbial oxidation reduction restoration system comprises a biomass-based cathode, a biomass-based anode, a load, a first electron conduction circuit, a second electron conduction circuit and a buoyancy support material; the biomass-based cathode is fixed on the buoyancy support material, and is connected with one end of the load through the first electron conduction circuit; the biomass-based anode is connected with the other end of the load through the second electron conduction circuit; the biomass-based cathode enriches aerobes and does not need catalysts; the biomass-based anode can remove pollutants through enriching electrogenic microbes. The polluted water body in-situ restoration microbial oxidation reduction device can be widely applied to polluted water bodies, and has the advantages that the environment is protected; safety is high; the manufacturing price is low; the maintenance is simple; the synchronous restoration of polluted water body and deposits can be realized.

Description

technical field [0001] The invention relates to the field of restoration of polluted water bodies, in particular to a microbial redox device and restoration method for in-situ restoration of polluted water bodies. Background technique [0002] Dredging urban rivers can dredge the river and improve the water body, but the amount of sediment produced by dredging is huge, which not only occupies land, but also causes secondary pollution to the environment. How to dispose of a large amount of dredged sediment is a difficult problem. At present, there are several methods for final disposal: ocean disposal, thermochemical treatment, material production or sanitary landfill. These methods not only have a large amount of engineering, but also are expensive. Although the urban sewage river bottom sludge contains not only heavy metals, organic matter and other pollutants, but also nitrogen fertilizer, phosphorus fertilizer, inorganic salts required for plant growth, and carbon source...

AI Technical Summary

Problems solved by technology

However, many factors, such as expensive electrode catalysts, high electrode manufacturing costs, and reduced voltage and output power after expansion, limit the wide application of microbial electrochemical systems as in-situ bioremediation of sediments.

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