Method for treating rural domestic sewage

Abstract

The invention relates to environmental protection technologies, and discloses a method for treating rural domestic sewage. By the aid of the method, the problems of large quantities of structures, high energy consumption and cost, troublesome operation and unsuitability for rural areas when existing rural domestic sewage is treated by the aid of existing methods can be solved. The method includessteps of feeding the domestic sewage into anaerobic reaction columns 1; allowing effluent in the anaerobic reaction columns 1 to automatically flow into anaerobic reaction columns 2; allowing effluentin the anaerobic reaction columns 2 to automatically flow into anaerobic reaction columns 3; allowing effluent in the anaerobic reaction columns 3 to automatically flow into ecological reaction tanks4; allowing effluent in the ecological reaction tanks 4 to automatically flow into ecological reaction tanks 5; allowing effluent in the ecological reaction tanks 5 to automatically flow into ecological reaction tanks 6; draining effluent in the ecological reaction tanks 6. First-level B emission standards of the national Urban Sewage Plant Pollutant Emission Standards (GB18918-2002) can be met by effluent. The method has the advantages that good domestic sewage treatment effects can be realized by the method; energy consumption can be omitted, and accordingly the method is low in sewage treatment cost; processes are low in construction cost, actual operation and running management can be facilitated, and accordingly the method is favorable for popularization and application; environmentscan be protected, and the method is favorable for water environment quality improvement.

Description

technical field [0001] The invention relates to environmental protection technology, in particular to a method for treating domestic sewage in rural areas. Background technique [0002] The vast majority of rural sewage in my country is directly discharged into water bodies without treatment, and rural domestic sewage accounts for a large proportion of the sources of lake pollution in my country. With the increasing level of urbanization, rural urbanization, and urban-rural integration in my country and the improvement of farmers' living standards, the discharge of domestic sewage in towns will continue to increase rapidly, which will undoubtedly bring greater pressure to water source protection. To protect urban water sources and gradually improve the quality of the water environment, we must increase sewage treatment efforts. To effectively promote the construction of a new socialist countryside, the quality of the rural ecological environment must be continuously improve...

AI Technical Summary

Problems solved by technology

[0004] (1) Pollution sources are relatively scattered, the water volume is small, the concentration of organic matter is high, and the coefficient of daily variation is high;

[0005] (2) The economy of most rural areas is relatively backward and cannot afford high-input treatment facilities, while land resources are relatively abundant;

[0006] (3) Lack of corresponding professional management personnel

[0007] The existing technology mainly contains biological methods for the treatment of domestic sewage: A commonly used in urban sewage treatment plants 2 O. Oxidation ditch and other activated sludge methods. The characteristics of these methods are: the sewage pipe network is required to collect the sewage together, the operation of the structures is complicated, the construction and operation costs are high, and professional management is required. Therefore, these methods are difficult to apply Distributed domestic sewage treatment in rural areas

[0008] Therefore, the treatment of rural sewage cannot simply copy the experience of urban sewage treatment plants. It must be adapted to local conditions, and a process with low investment and operation costs, simple operation and management, and good treatment effects must be selected.

[0009] Chinese Patent Publication No.: CN102145968A introduces "a rural domestic sewage treatment process". "Discharge Standard" (GB18918-2002), the first-class B standard, but this kind of process operation is complicated, the operation cost is high, and professional operation is required, so it is not suitable for the domestic sewage treatment requirements in rural areas

[0010] Chinese Patent Publication No.: CN103641282A, introduces "a method for the treatment of rural domestic sewage surface slow infiltration land", this technology uses "dry and wet separation tank + collection sedimentation tank + surface slow infiltration ditch", although the method It can realize economical and energy-saving treatment of sewage, but lacks anaerobic link, and has limited ability to remove macromolecular organic pollutants in sewage

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