Sewage purification tank

Abstract

The invention discloses a sewage purification tank, which comprises a precipitation separation pond, an anaerobic tank, a regulating lift pond and a constructed wetland which are arranged under the ground, wherein the upper part of the constructed wetland extends out of the ground; manholes exposed out of the ground are formed at the upper ends of the precipitation separation pond, the anaerobic tank and the regulating lift pond respectively; one end of the precipitation separation pond is connected with a grating well and the other end is connected with the anaerobic tank; a water outlet is formed in the other end of the anaerobic tank and is connected with the regulating lift pond; a water outlet end of the regulating lift pond is connected with the constructed wetland through a lift pump; a wetland dielectric layer is laid in the constructed wetland; plants are planted on the wetland dielectric layer; a water distribution pipe is arranged at the upper part of the wetland dielectric layer and is communicated with the regulating lift pond; and a gas distribution pipe and a water collection pipe are arranged at the bottom of the wetland dielectric layer. The sewage purification tank is simple and compact in structure, good in sewage treatment effect, SS in sewage can be effectively reduced and the indexes such as BOD5 and CODcr can be reduced to some extent, and the sewage purification tank is stable in effluent, low in cost and small in floor area and can be adapted to stage construction and household construction of big or small sewage treatment plants of new villages and towns.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment and relates to a purification pool, in particular to a sewage purification pool. Background technique [0002] With the rapid development of my country's economy, the accelerated pace of urbanization, and the improvement of living standards, the country pays more and more attention to the protection of the ecological environment. Water pollution treatment will be one of the most important areas. In view of the continuous deterioration of water environment quality Water pollution has become a threat to the sustainable development of society and economy, and has become a restrictive factor for my country's social development, economic prosperity, people's health and the improvement of people's quality. At present, in addition to the industrial wastewater produced by enterprises, domestic wastewater occupies a large part of the total sewage. People will produce a lot of wastewater in their da...

AI Technical Summary

Problems solved by technology

However, this kind of purification pond is an ecological filter pond, which occupies a large area and has low purification efficiency. It also needs to clean up the sedimented sludge regularly, so it is not suitable for installation and use by every household.

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