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Decentralized, quality separated and centralized integrated treatment mode for domestic sewage of peasants in mountainous and hilly areas

A domestic sewage and treatment mode technology, applied in the direction of biological water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the large environmental risks of rural sewage discharge and the generation rate of sewage methane It can achieve the effect of high sewage treatment efficiency, easy maintenance and management, and stable operation.

Inactive Publication Date: 2010-11-10
BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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Problems solved by technology

Practice has proved that although this treatment method reduces the damage to the environment and ecology caused by rural sewage, it can only be used when the quality of drainage water is not high. After centralized treatment, rural sewage discharge will still have a large environmental risk.
At the same time, the difference in the amount of domestic sewage produced by each farmer and the water quality of each unit of sewage leads to a low biogas generation rate of mixed sewage, and the direct use of "non-energy-consuming" biological treatment method has a high treatment effect due to the high concentration of sewage. Not very good

Method used

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  • Decentralized, quality separated and centralized integrated treatment mode for domestic sewage of peasants in mountainous and hilly areas
  • Decentralized, quality separated and centralized integrated treatment mode for domestic sewage of peasants in mountainous and hilly areas

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Embodiment approach

[0017] Implementation mode: High-concentration wastewater from farming and livestock breeding a enters the anaerobic biological treatment system 1, and the produced biogas 1.1 can provide energy for farmers, and the treated sewage and the concentrated sewage in the toilet flushing manure b enter the three-tank non-energy-consuming biological treatment system 2 The first tank 2.1, then enter the second tank 2.2 and the third tank 2.3 in turn to ensure sufficient hydraulic retention time; the three-pool non-energy-consuming biological treatment system 2 treated sewage and household kitchen washing and daily washing low-concentration sewage c Enter the sand and gravel layer 3.1 of the soil infiltration system 3, and then pass through the sand and gravel layer 3.2 to the soil layer 3.3; each farmer finally passes through the soil infiltration system 3 and then the sewage enters the sewage closed non-powered collection system 4, and the sewage is collected into the three ponds The fi...

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Abstract

The invention discloses a decentralized, quality separated and centralized integrated treatment mode for domestic sewage of peasants in mountainous and hilly areas. The mode comprises a peasant quality-separated treatment system, a decentralized sewage collecting system and a sewage centralized treatment system, wherein the peasant quality-separated treatment system comprises an anaerobic biological treatment system, a three-pond type non-energy consuming biological treatment system and a soil filtration system; the anaerobic biological treatment system is mainly used for treating high-concentration wastewater of domestic animals raised by the peasants; the three-pond type non-energy consuming biological treatment system is used for treating middle-concentration wastewater discharged when the peasants flush toilets; and the soil filtration system is used for treating low-concentration wastewater discharged from kitchen washing and daily washing; the decentralized sewage collecting system makes use of height difference of centralized peasants to powerlessly and closely collect sewage treated by every decentralized peasant; and the sewage centralized treatment system treats the wastewater collected by the three-pond type non-energy consuming biological treatment system and a constructed wetland, and finally realizes standard discharge of rural sewage. The mode has the advantages of suitability for the characteristics of decentralized water qualities and sources of the rural sewage, high sewage treatment efficiency, stable operation, easy maintenance and management, and reduction in the damage of rural sewage discharge to ecological environment.

Description

Technical field [0001] The invention belongs to the technical field of wastewater treatment in environmental protection, and relates to a method for comprehensive wastewater treatment, and specifically is a distributed, quality and centralized integrated treatment mode for domestic sewage of rural households in mountainous and hilly areas. Background technique [0002] Rural sewage is another serious pollution source second only to urban sewage. Due to the scattered and wide coverage of rural pollution sources, small sewage volume, weak technical force and lack of funds, the rate of harmless treatment of rural sewage is very low, which is harmful to the rural ecological environment. Caused great damage. The harmless treatment and resource utilization of rural human and livestock sewage is a key concern in rural ecological construction and an important content of new rural construction. [0003] Domestic sewage from rural households includes wastewater from livestock breeding, wast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/28C02F3/32C02F3/34
Inventor 董黎明田媛孙迎雪徐春明任连海
Owner BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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