Rural domestic sewage classification treatment system

Abstract

The invention relates to a rural domestic sewage classification treatment system, and belongs to the technical field of sewage treatment. The system comprises a three-stage septic tank system, a filtration and regulation system, an immersed bio-filter and a subsurface flow constructed wetland system, the three-stage septic tank system is connected with a toilet to introduce black water, the blackwater is subjected to anaerobic fermentation in the three-stage septic tank system, is transferred through a manure passing pipe, and flows into a sewage pipe through a connecting pipe after being converged with grey water in kitchens, the mixed sewage is conveyed through the sewage pipe, goes through a grating well and flow into a regulating tank, the mixed sewage in the regulating tank is pumpedinto the immersed bio-filter through a submersible sewage pump and is treated by activated sludge, the treated water flows into the constructed wetland system, and the water in the constructed wetland flows into a water collecting channel from an adjustable water outlet. The rural domestic sewage can be treated in a classified mode, the black water can be treated to fertilize lands, and the greywater can be directly discharged or recycled after being purified; and the rural domestic sewage classification treatment system has the advantages of simple structure, and convenience in maintenance.

Description

technical field [0001] The invention relates to a rural domestic sewage classification treatment system, which belongs to the technical field of sewage treatment. Background technique [0002] At present, the rural economy is developing rapidly, and the living standards of farmers have been greatly improved. However, compared with the economic development, the construction of the rural environment is lagging behind, and the problem of water pollution is particularly serious. Untreated domestic sewage is discharged randomly, causing the water quality of ditches and ponds to turn black and smelly, breeding mosquitoes, causing drinking water source pollution and eutrophication of lakes and reservoirs, and at the same time affecting the rural living environment and threatening the health of residents . [0003] Rural domestic sewage treatment is a harmless treatment such as removal and degradation of harmful substances and environmental pollution components in domestic sewage. ...

AI Technical Summary

Problems solved by technology

At present, there are many treatment technologies for rural domestic sewage at home and abroad, but due to the complex structure of purification equipment and high operating costs, they have not been widely used in rural areas.

In addition, rural domestic sewage has great potential value, and many resources can be obtained from it. However, at present, rural domestic sewage is difficult to be effectively used. Untreated discharge not only pollutes the environment, but also loses the possibility of utilizing resources in rural domestic sewage.

[0004] Patent CN201510533628.2 discloses a rural domestic sewage treatment device, treatment system and treatment method. The combination of anaerobic biological pool and falling artificial wetland can effectively remove organic matter and nitrogen and phosphorus in sewage, but the structure is complex and The black and gray water in the rural domestic sewage is not classified and treated, and the resource treatment has not been realized

Patent CN201510324313.7 discloses a comprehensive treatment and utilization system for the separation of rural domestic sewage sources. The combination of biogas digesters, facultative anaerobic ponds, and sand filters can be used to classify and treat rural domestic sewage, but it does not consider the actual situation in rural areas. Individual burden

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