A Vertical Flow Constructed Wetland Structure and Configuration Method for Improving Electric Energy Capture During Sewage Purification

Abstract

The invention discloses a vertical flow artificial wetland structure and configuration method for improving electric energy capture in the sewage purification process. The steps are: A. filling a non-conductive filler layer at the bottom of the vertical flow artificial wetland; B. filling the upper part of the non-conductive filler layer Filling the anode conductive filler layer; C, filling the non-conductive filler isolation layer above the anode conductive filler layer; D, setting the cathode conductive filler layer on the surface of the non-conductive filler isolation layer, and setting the cathode collector in the cathode conductive filler layer; E, controlling The ratio of the volume of the anode filler layer to the volume of the non-conductive filler isolation layer; F, the sewage enters the non-conductive, anode, non-conductive, and cathode conductive filler layers from the bottom in turn; G, when the sewage flows through the system, the electrical energy converted from organic matter passes through the external Wire output. The structure is laid with bottom non-conductive, anode conductive, non-conductive and cathode conductive filler layers from bottom to top. It significantly improves the electric energy capture and output capacity of the vertical flow constructed wetland in the sewage purification process.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a vertical flow artificial wetland structure for improving electric energy capture in the sewage purification process. At the same time, it also relates to a configuration method of a vertical flow artificial wetland for improving electric energy capture in the sewage purification process. The structure can capture and output electric energy to the maximum extent according to the concentration range of organic matter in the influent. Background technique [0002] Microbial fuel cell (MFC) has become a new hot spot in the field of sewage treatment because of its good performance in converting organic matter into electrical energy. Restricted by internal resistance, electrode materials and other factors, the scale of MFC is currently difficult to scale up, and most of them remain in the laboratory research stage, which limits its practical application. However, ...

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Problems solved by technology

[0003] However, with the scale-up of the constructed wetland-microbial fuel cell coupling system (CW-MFC), elements such as the substrate, plant roots, and electrode materials in the system will cause an increase in internal resistance, resulting in a decrease in Coulombic efficiency and a decrease in output power density.

At present, the plants used in the vertical flow constructed wetland-microbial fuel cell (VFCW-MFC) coupling system are generally conventional species that are well screened for microcurrent adaptation to the environment, and the selection of non-conductive filler substrates has not broken through conventional constructed wetland substrate materials (ZL 201310454037.7)

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