Assembled and heat-insulating constructed wetland device

Abstract

The invention discloses an assembled type artificial wetland device with heat insulating function. The device comprises an artificial wetland pond, a water inlet pipeline, an aeration device, a water outlet unit and immobilized microorganism plates, wherein the artificial wetland pond is divided into 4 layers from top to bottom, which are: a furfural residue layer, a steel slag layer, a gravel layer and an immobilized microorganism layer; the immobilized microorganism plates are mounted on the immobilized microorganism layer; the aeration device is arranged on the lower sides of the immobilized microorganism plates; the water inlet pipeline composed of a water inlet pipe and water distribution branch pipes is arranged on the lower side of the aeration device; a steel wire net is arranged between the immobilized microorganism layer and the gravel layer; the water outlet unit consists of a water outlet, a water collecting tank and a water connecting tank water drainage pipe; the artificial wetland pool consists of an upper pond body, a middle pond body and a bottom pond body, and is constructed with steel plates; a layer of heat insulating layer is mounted in the pond. The assembled type artificial wetland device has the advantages that the organic combination of microbiological method with the artificial wetland effectively improves the sewage treatment efficiency of the artificial wetland.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to an assembled artificial wetland device with heat preservation function. Background technique [0002] Constructed wetland is a new type of sewage treatment process developed in the 1970s. It utilizes the triple synergy of physics, chemistry and biology in the natural system to purify sewage. Constructed wetland sewage treatment technology has the advantages of good treatment effect, high nitrogen and phosphorus removal rate, convenient operation and maintenance, low engineering infrastructure and operation costs, so it is widely used in domestic sewage treatment, industrial sewage treatment, mining and oil exploration, agricultural sites source and non-point source pollution and water eutrophication. [0003] The traditional activated sludge method is widely used in sewage treatment, mainly because activated sludge contains a large number of active microorganisms, which can quick...

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Problems solved by technology

[0004] Compared with other traditional sewage treatment processes, the constructed wetland has a longer hydraulic retention time in the sewage treatment process. The organic matter, nitrogen, phosphorus and other harmful substances in the sewage of the constructed wetland are mainly removed by the adsorption of the filter material, and the gaps of the filter material will be absorbed. A small amount of microorganisms, microorganisms can remove organic matter and nitrogen and phosphorus in sewage by their own action, but the microbial content in the filter material is small, so the microbial action is limited, and excessive free microorganisms can easily lead to filter material blockage

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