Household type buried unpowered integrated composite biological sewage treatment device and process

Abstract

The invention discloses a household type buried unpowered integrated composite biological sewage treatment device and process. The device comprises an anaerobic baffled reactor with a water inlet, wherein a composite biological trickling filter is arranged in the anaerobic baffled reactor; a water outlet end of the anaerobic baffled reactor communicates with a water inlet end of the composite biological trickling filter; sewage enters the anaerobic baffled reactor and the composite biological trickling filter in sequence through gravity plug flow and can automatically operate; and a water outlet is formed in the composite biological trickling filter. In the whole process, the sewage can be automatically operated through the gravity plug flow; practical sewage treatment technologies are highly concentrated, so that the device is economic and practical, and simple and convenient to operate and maintain, no power equipment is required, the purpose of saving resources is achieved, and thetreatment effect on pollutants is good, therefore, the device is suitable for promotion and application in treatment of scattered rural domestic sewage.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment and relates to rural distributed domestic sewage treatment equipment, in particular to a household type buried non-powered integrated composite biological sewage treatment device and process. Background technique [0002] my country is a developing agricultural country. The sixth national census shows that my country's rural population accounts for 50.32% of the country's total population, and they live scattered. In addition, 96% of my country's villages do not have sewage treatment systems. Most of the sewage is discharged into nearby rivers and ponds without treatment, and the natural environment, surface runoff, groundwater sources, and farmland soil are all polluted to varying degrees. [0003] Rural domestic sewage is characterized by strong biodegradability, high nitrogen and phosphorus content, and basically does not contain toxic substances such as heavy metals. The discharge poi...

AI Technical Summary

Problems solved by technology

The discharge points are scattered, the discharge volume of each household is small and the fluctuation of sewage water quality and quantity is relatively large, the collection is difficult, and the rural economy and professional level are low, and there is a lack of management technical specifications, etc.

In addition, the rural population lives scattered and the amount of domestic sewage produced is small, and the sewage treatment is also affected by the local natural environment. Therefore, the rural domestic sewage treatment process cannot simply apply the urban sewage treatment process. The existing traditional process is used for decentralized rural domestic sewage If it is to meet the first-level standard of "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB18918-2002), it will require large energy consumption, high investment costs, and troublesome maintenance and management.

Images