Rural domestic wastewater treatment device and process

Abstract

The invention relates to a rural domestic wastewater treatment device. The rural domestic wastewater treatment device comprises an oxygen elimination tank, an anaerobic filter, an aerobic MBBR pond and a biofilter which are sequentially communicated, wherein the biofilter is aimultaneously communicated with the oxygen elimination tank; each area is divided by partitions into a plurality of reaction tanks which are different in size and mutually communicated, and the sizes and the numbers of the reaction tanks are determined according to actual cases to meet requirements of different wastewaterqualities. An oxygen elimination filler, an anaerobic filter filler, an MBBR active biological filler or a filter filler is not arranged in the oxygen elimination tank, the anaerobic filter, the aerobic MBBR pond and the biofilter, or the oxygen elimination filler, the anaerobic filter filler, the MBBR active biological filler and the filter filler are respectively arranged in the oxygen elimination tank, the anaerobic filter, the aerobic MBBR pond and the biofilter, to meet the requirements of the different wastewater qualities. Defects in the prior art are avoided. The microbial biomass andthe microbial population in a reactor are greatly increased to radically degrade and remove various pollutants in wastewater, thereby providing a powerful guarantee for stable and standard effluent discharge. Meanwhile, the sludge yield and the occupied area are reduced and the building investment and the running investment are lowered on the premise of guaranteeing the effluent quality and amount.

Description

technical field [0001] The invention relates to an environmental protection device and process, in particular to a treatment device and process suitable for rural sewage, in particular to a rural domestic sewage treatment device and process. Background technique [0002] There are nearly 600,000 administrative villages and more than 2.6 million natural villages in the country. With the improvement of rural living standards, flush toilets are popular among farmers, and the water used for washing has increased. A large amount of rural domestic sewage has been discharged without treatment, which has become nutrient-rich in lakes and rivers. One of the main causes of environmental pollution. Urban sewage treatment technologies and large-scale pipe network construction are difficult to implement in rural areas. It is very urgent to promote decentralized sewage treatment technology suitable for rural areas. [0003] Rural sewage has the following characteristics: different regio...

AI Technical Summary

Problems solved by technology

[0004] Existing problems: comprehensively considering the current situation of rural economy, geography and environment in different regions, the rural sewage treatment technologies include pretreatment, biological treatment, ecological treatment, etc.

[0005] Most of the treatment technologies at this stage have poor water quality, unstable effects, and poor impact load resistance; they occupy a large area; issues such as certain impact

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