Electro-Fenton wastewater treatment system based on arrayed wetland microbial fuel cell powering and wastewater treatment method

Abstract

The invention discloses an Electro-Fenton wastewater treatment system based on arrayed wetland microbial fuel cell powering and a wastewater treatment method. The system comprises: a nano iron-carbon micro-electrolytic reaction region for pretreating wastewater; an Electro-Fenton system reaction region for treating effluent from the nano iron-carbon micro-electrolytic reaction region; arrayed wetland microbial fuel cells for treating effluent from the Electro-Fenton system reaction region and treating the effluent, wherein the arrayed wetland microbial fuel cells refer to a wetland microbial fuel cell bank formed by connecting a plurality of wetland microbial fuel cells; cathode and anode of the wetland microbial fuel cell bank are connected to corresponding anode and cathode of the Electro-Fenton system reaction region through wires respectively. The invention also provides the wastewater treatment method. The joint action of the whole system brings enhanced degrading action with no need for additional energy or fed reagents, and the method is an energy-saving environment-friendly water treatment technique.

Description

technical field [0001] The invention belongs to the technical field of water pollution control and water treatment, and specifically relates to an electric Fenton water treatment system and method based on an array-type wetland microbial fuel cell for high-efficiency power supply. Background technique [0002] Dye wastewater has the characteristics of complex composition, deep color, high salt content, and difficult biochemical degradation, which poses a threat to public health and safety. Its environmental safety effect has attracted more and more attention, and the research on its treatment process has become an urgent problem to be solved. . The bioelectric Fenton method generates H in situ by supplying external electric energy to the electro-Fenton system 2 o 2 and Fe 2+ Oxidize the refractory dye molecules to improve the biodegradability of wastewater. [0003] Studies have shown that nano-iron-carbon micro-electrolysis technology can realize the chain scission of m...

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Problems solved by technology

[0007] Purpose of the invention: In order to overcome the defects and insufficiencies of the prior art and aim at the existing problems in the treatment of acid dye wastewater, the present invention provides an electric Fenton sewage treatment system and treatment method based on the array type wetland microbial fuel cell power supply, Make full use of the iron-carbon micro-electrolysis-electric Fenton system to improve the biochemical performance of wastewater, thereby improving the power generation performance of the constructed wetland microbial fuel cell, and by connecting the constructed wetland microbial fuel cell in series and parallel to increase the output voltage to supply the electric Fenton system, And further evolve the water quality, and finally improve the degradation effect of acid dyes

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