Integrated excrement treatment device

Abstract

The invention provides an integrated excrement treatment device. The interior of a tank body is divided into a pretreatment unit and a biochemical treatment unit through a partition plate, a black water inlet is formed in the outer wall of the pretreatment unit, and black water enters the pretreatment unit, is subjected to anaerobic fermentation hydrolysis and then enters the biochemical treatment unit. Sewage is subjected to nitrification, denitrification and precipitation in the biochemical treatment unit and then is drained out of the tank body through the water outlet pipe, the liquid level of the pretreatment unit is higher than that of the biochemical treatment unit, and the black water inlet is higher than the water outlet pipe. Septic tank pretreatment and purification tank biochemical treatment are combined into a whole, and pretreatment and biochemical treatment are simultaneously carried out on excrement in the same device, so that the occupied area for mounting the sewage treatment device is reduced, and the site selection difficulty is reduced; and meanwhile, each household independently uses one treatment device, black water is treated on site, pipe network construction is omitted, sewage leakage caused by a pipe network is avoided, investment is reduced, the construction period is shortened, and the operation and maintenance cost is reduced.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an integrated treatment device for manure and sewage. Background technique [0002] Rural toilet improvement and domestic sewage treatment are important contents in the improvement of rural human settlements and agricultural and rural pollution control, and are important factors that determine the appearance and governance level of villages. Effectively linking rural toilet improvement and domestic sewage treatment is an important part of further reducing rural domestic pollution discharge, improving the utilization rate of water resources and manure resource utilization, and promoting the continuous improvement of rural living environment. [0003] According to different sources and organic matter, domestic sewage is divided into two categories: black water and gray water. Black water refers to high-concentration domestic sewage containing fecal matter. Its source is to...

AI Technical Summary

Problems solved by technology

Gray water is generally discharged directly or after simple filtration, without denitrification, phosphorus removal and other processes.

[0004] Such new problems will follow: (1) There is no corresponding sewage treatment system in the septic tank of each household. With the increase of flushing water, the septic tank frequently overflows, resulting in cross flow of sewage or increased cleanliness. (2) Adopt on-site treatment methods, such as septic tank pretreatment and then enter the purification tank for biochemical treatment. Although direct discharge of sewage can be achieved, the combined product occupies a large area and needs to be built with supporting pipe networks , the site selection is difficult in actual implementation, the coordination and construction period is long, and the pipe network is too long to cause water leakage; (3) The collection and centralized processing of the pipe network can avoid the problem of site selection for each household, but the construction cost of the pipe network is extremely high High, the construction will destroy the existing road surface and infrastructure, and the difficulty of operation and maintenance is high, there are many fault points, and the sewage leakage is serious; (4) The gray water is treated separately, without biochemical treatment such as denitrification and phosphorus removal, and only the water sent out still pollute the rural environment

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