Village and town sewage purification system

Abstract

The invention discloses a village and town sewage purification system. The system comprises a pre-filtration unit, a biological treatment unit, a sewage treatment unit, a filtration and purification unit and a sludge treatment unit, wherein the biological treatment unit is provided with a contact reaction tank connected with a water outlet of the pre-filtration unit, a biological rotating disc isinstalled on the contact reaction tank, and a sedimentation tank is arranged at the water outlet of the contact reaction tank; the sewage treatment unit is provided with an anaerobic reaction zone andan aerobic reaction zone, a water outlet of the sedimentation tank supplies sewage to the anaerobic reaction zone, the lower part of the anaerobic reaction zone is communicated with the aerobic reaction zone, and the outer side of the aerobic reaction zone is communicated with a separator; the filtration and purification unit is provided with a plurality of graded unit pools, and the unit pools can filter water flowing through the unit pools; and the sludge treatment unit is respectively communicated with the bottoms of the pre-filtration unit, the sedimentation tank, the separator and the unit pool, and can suck settled sludge water at the bottoms of the sedimentation unit, the sedimentation tank, the separator and the unit pool. The village and town sewage purification system is good inpurification effect and low in purification cost.

Description

technical field [0001] The invention relates to the technical field of water body purification, in particular to a township sewage purification system. Background technique [0002] With the continuous improvement of people's living standards, available water is getting less and less, and the problem of sewage discharge pollution caused by people's production and life has become more and more serious. At present, the problem of township sewage treatment is a prominent shortcoming in my country's environmental governance. Most of the township sewage in my country has not been effectively treated. The main reason is that the number of townships in my country is large, the distribution is scattered, the cost of sewage treatment operation and maintenance is high, and the treatment effect is not good. Obvious reasons. For this reason, a considerable part of township sewage is discharged directly, without proper control measures, which aggravates the pollution to the environment. ...

AI Technical Summary

Problems solved by technology

At present, the problem of township sewage treatment is a prominent shortcoming in my country's environmental governance. Most of the township sewage in my country has not been effectively treated. The main reason is that the number of townships in my country is large, the distribution is scattered, the cost of sewage treatment operation and maintenance is high, and the treatment effect is not good. obvious reasons

For this reason, a considerable part of the township sewage is directly discharged, and proper treatment measures have not been taken, which has aggravated the pollution to the environment.

For towns and towns that have the conditions to carry out sewage treatment, the sewage components of towns and towns are mostly domestic sewage, mostly organic pollution, and eutrophication is serious. This kind of water generally contains high density of plankton, such as algae, planktonic Animals, the sewage treatment methods used in these towns generally use integrated container equipment, the sewage treatment capacity of these equipment is poor, the volume of treatment is not large, and the conventional treatment equipment is easily blocked and damaged by these organisms

In addition, once the rainy season or rainy day comes, the domestic sewage in the township will skyrocket, and the concentration of sewage will decrease, resulting in uneven sewage concentration throughout the year. Conventional purification equipment is difficult to handle these sewage with uneven volume and high density of plankton.

If a large number of such purification equipment are used in order to adapt to the amount of sewage in towns, there are usually problems such as high investment costs, high operating costs, ineffective treatment of sludge, and complicated operation and management. It is not suitable for large-scale township sewage treatment.

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