A method for transforming downstream constructed wetland device coupling cluster microbial fuel cell

Abstract

Provided is a method for modifying a downstream artificial wetland device coupled cluster-type microbial fuel cell, comprising the steps of: inserting an outer sleeve (2) after digging a hole at a target location to take a core; inserting an inner sleeve (1) having an inlet pipe (3) into the outer sleeve (2); a microbial fuel cell unit is arranged in the inner sleeve (1); the microbial fuel cell unit in each inner sleeve (1) form a cluster-type microbial fuel cell; the top end of each inner sleeve (1) is connected to a water distribution flow-guiding groove (6), and planting water-purifying plants on the top of each inner sleeve (1). If the output voltage of the microbial fuel cell is abnormal, or if there is no water overflow at the top of the inner sleeve (1), then the corresponding inner sleeve (1) is taken out of the outer sleeve (2), and after rinsing or complete replacement, is placed back into the outer sleeve (2). The present method has the advantages of less damage to the wetland system, simple construction and operation, etc., and is conducive to solving the problem of system congestion, strengthening the purification efficiency of the system, and can achieve the purpose of extending the service life of wetlands, accomplishing modification and upgrade of the existing downstream artificial wetland system.

Description

technical field [0001] The invention belongs to the field of environmental engineering, and in particular relates to a method for transforming a downstream constructed wetland device coupled with a cluster microbial fuel cell. Background technique [0002] Compared with traditional centralized sewage treatment systems, constructed wetlands have the advantages of low construction and operating costs, simple maintenance, and good landscapes, and have been widely used in the decentralized treatment of various types of sewage. However, the existing constructed wetland system often faces the problem of clogging after years of continuous operation, ranging from the formation of short flows inside the wetland bed, to paralyzing the operation of the system and seriously affecting its service life. Although preventive or treatment measures such as optimizing matrix gradation or stopping and adding earthworms (CN201410204567.0 A method for solving the problem of wetland clogging) can ...

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Problems solved by technology

[0004] Purpose of the invention: Aiming at the above-mentioned prior art, propose a method for transforming downstream constructed wetland devices coupled with clustered microbial fuel cells, aiming at the constructed wetland systems that have been applied on a large scale, implant microbial fuel cell modules for upgrading and transformation, and solve the system Blockage problem, and further improve purification efficiency

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