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Low-consumption biological treatment method of rural sewage

A sewage treatment method and sewage technology, which are applied in biological sludge treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. The effect of low management costs, reduction of structures and their operation and management work, and less use of equipment

Active Publication Date: 2012-10-03
华鸿水务集团股份有限公司
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Problems solved by technology

Due to the relatively backward economy of most rural areas and the relatively scattered living conditions, a large amount of rural domestic sewage and a small amount of human and animal manure enter surface water bodies and groundwater bodies, resulting in the potassium permanganate index, nitrogen, phosphorus, coliform bacteria, smell, etc. of these water bodies. The water quality index exceeds the standard, seriously affecting the safety of drinking water in rural areas

Method used

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  • Low-consumption biological treatment method of rural sewage

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Embodiment 1

[0015] A Miao natural village (tun) in a mountainous county in Guangxi carried out new rural demonstration construction. Relying on the mountain topography, it invested nearly 400,000 yuan in the construction of sewage pipes and sewage treatment systems in the village. There are more than 70 households in the village, nearly 400 people, and the daily sewage (including village tourism, catering sewage) is about 100 cubic meters, BOD 5 185mg / L, ammonia nitrogen 16mg / L, total phosphorus 5mg / L, using this technology for treatment. The sewage enters the sump through gravity flow along the hillside, and then enters the tower biofilter for treatment according to the average flow rate through the flow meter, and then enters the depression next to the river for further treatment.

[0016] The sewage is treated by the three-stage septic tank and the tower-type biofilter in the farmer's courtyard. The effluent of the tower-type biofilter is close to the second-level standard of pollutant...

Embodiment 2

[0019] An administrative village in a certain county in Guangxi is carrying out the construction of a new rural demonstration village. The village is close to the river, and the terrain is relatively flat. There are more than 160 households in the village, nearly 1,000 people, and the daily sewage production is about 180 cubic meters. The sewage BOD 5 163mg / L, ammonia nitrogen 15mg / L, and total phosphorus 5mg / L are treated by this process. Pipes and channels are laid along the road to enter the sump, and then pumped into the tower-type biological filter at an average flow rate for treatment, and then enter the pond next to the river for further treatment.

[0020] After the sewage is treated by the three-level septic tank and the tower biofilter in each family courtyard, the effluent of the tower biofilter meets the second-level standard of pollutant discharge standard for urban sewage treatment plants (GB18918-2002), and contains a large amount of cattail, reed, After the po...

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Abstract

The invention discloses a low-consumption biological treatment method of rural sewage, comprising the specific process flows: sending the rural sewage into a three-level septic tank, sending into a collecting tank, sending into a tower type biofilter, sending into wet land and yielding water. The invention fully utilizes rural geographic and geomorphic characteristics to collect sewage, supplies oxygen by a natural ventilation tower biofilter, processes rural domestic sewage by utilizing rural surrounding wet lands, is not provided with a sewage aeration system and a sludge treatment system, has simple process flow, less adopted equipment and small land occupation, obviously reduces one-shot engineering, equipment investment and operation energy loss thereof of sewage treatment, is convenient for farmers to manage, lowers operation management cost, realizes low-carbon operation, accelerates the comprehensive improvement of the rural environment and protects environment.

Description

technical field [0001] The invention relates to a low-consumption sewage treatment technology which utilizes three-stage septic tanks in family gardens, tower-type biological filters and wetlands to jointly treat rural sewage. Background technique [0002] my country is a developing country with an urbanization level of only about 46%, and most of the population lives in the countryside. Due to the relatively backward economy of most rural areas and the relatively scattered living conditions, a large amount of rural domestic sewage and a small amount of human and animal manure enter surface water bodies and groundwater bodies, resulting in the potassium permanganate index, nitrogen, phosphorus, coliform bacteria, smell, etc. of these water bodies. The water quality index exceeds the standard, seriously affecting the safety of drinking water in rural areas. In recent years, all parts of the country are vigorously carrying out the construction of ecological provinces, ecologi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F11/04
Inventor 成官文
Owner 华鸿水务集团股份有限公司
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