Double-tube water distribution device with biomembrane reaction of subsurface flow type constructed wetland

Abstract

A subsurface flow type constructed wetland has a double-barreled water distributor with biofilm reaction, which is characterized in that the double-barreled water distributor is formed by sleeving an inner layer pipe and an outer layer pipe, water distribution holes are provided on inner pipe and outer pipe walls, two ends of the inner pipe and the outer pipe are closed by ring end plates, porous fillers are filled between the inner pipe and the outer pipe, thereby forming a signal biofilm reactor. The porous fillers in the water distributor are particle fillers containing a plurality of metal oxides with rough surfaces and grain size of 15-20mm. The inner pipe of a water distribution pipe is provided with a socket. A reactor with independent biofilm is formed by the sewage passing through the porous fillers. By changing the filler proportion, the reactor can have a purification unit with micro-electrolysis function. The sewage passes through the water distribution pipe network, which has a primary purification process and can remove 30% of pollutant. The sewage is infiltrated to an ecological wetland filter bed after uniform water distribution through the water distributor, thus the sewage is ensured not to form short flow impact during the flowing treatment process. The invention ensures the fluent water distribution and not to block, and realizes the long-acting safe operation.

Description

technical field [0001] The invention is a double-layer water distribution pipe with fillers, which is used in sewage treatment projects of artificial wetlands or land infiltration systems, and is a water treatment technology applied to environmental protection projects. Background technique [0002] Due to economic development, population growth, urban domestic sewage discharge is increasing, and the problem of water pollution is becoming more and more serious. For the harmony between man and the environment and the sustainable development of the economy, the treatment of industrial wastewater and domestic sewage is very important and urgent. At present, the main methods of sewage treatment are physical and chemical methods and biochemical methods, and the traditional activated sludge treatment process is the main method in the biochemical method, but the engineering investment of this technology is large, the energy consumption is high, and the operation and management requ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a double-pipe water distributor, water distribution pipe network and water distribution system with biofilm reaction in subsurface constructed wetlands, which can be used as subsurface water distribution pipes in subsurface artificial ecological wetlands or land infiltration sewage treatment Mesh system, which solves the problem of short flow of water distribution and blockage in the pipe

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