Domestic sewage treatment device

Abstract

The invention relates to a domestic sewage treatment device, which is suitable to treat rural domestic sewage and decentralized domestic sewage, outside urban sewage pipe network, from units, office buildings, residential areas, dwelling buildings, hotels, public toilets and other places. The domestic sewage treatment device of the invention comprises a grit chamber, an anaerobic digester and an ecological purification filter chamber which are connected in turn, wherein a grit area, a trapping are arranged in the grit chamber and a flow guide area and an anaerobic filter area are arranged in the anaerobic digester and multiple vertically baffling sedimentation and filtration area with an aerobic area; and therefore, the effluent of the sewage treated by the domestic sewage treatment device can meet the requirements of Domestic Sewage Comprehensive Discharge Standards GB8978-1996 for first-grade effluent. All structures are buried underground, power is not required, the floor area occupation is small, the management is simple and convenient, operation cost is avoided basically, the surrounding landscape is not influenced, and the environment is beautified.

Description

A domestic sewage treatment device technical field The invention relates to a domestic sewage treatment device, which is suitable for treating rural domestic sewage or domestic sewage discharged from units, office buildings, residential areas, residences, hotels, schools and public toilets outside the urban sewage pipe network. Background technique At present, the devices used to treat rural domestic sewage or other scattered domestic sewage mainly include domestic sewage purification biogas digesters, artificial wetlands, stabilization ponds, etc. Among them, domestic sewage purification biogas digesters have been widely used. The device is composed of a grid retention well, a grit chamber, a pre-treatment area 1, a pre-treatment area 2 and a post-treatment area. The total hydraulic retention period of the system is 3-5 days, of which the pre-treatment area 1 and the pre-treatment area 2 are two-stage anaerobic digestion tanks, and the post-treatment area is a facultative...

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to overcome the disadvantages of the unsatisfactory removal effect of ammonia nitrogen and phosphorus in the existing domestic sewage purification biogas tank, and the effluent cannot meet the first-level requirements of the "Comprehensive Wastewater Discharge Standard" (GB8978-1996), and provide a Domestic sewage treatment device,

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