Three-effect fused rural ecological sewage treatment system and three-effect fused rural ecological sewage treatment method

Abstract

The invention discloses a three-effect fused rural ecological sewage treatment system and a three-effect fused rural ecological sewage treatment method. The system comprises a pre-treatment unit, a LJ-BL treatment unit, a LJ-MB treatment unit, a LJ-EL treatment unit and a sludge treatment unit. The pre-treatment unit removes suspended organic matters in household sewage by means of a precipitationand anaerobic fermentation principle, the BJ biochemical treatment unit degrades CODcr and BOD5 in the wastewater through an anaerobic pool and an aerobic tank, the MB treatment unit is used for treating sewage by combining efficient membrane separation with an activated sludge method, and the LJ-EL treatment unit further eliminates organic matters, heavy metals and nitrogen and phosphorus through an artificial wetland. The system has a good effluent effect, can meet afforestation and farm irrigation and can be directly reclaimed as the content of effluent suspended solids and turbidity are close to zero. Compared with a conventional treatment system, 40% of a land occupied area can be saved, and the landscape in a plant is good.

Description

technical field [0001] The invention relates to a three-effect integrated rural ecological sewage treatment system and treatment method, belonging to the technical field of sewage treatment. Background technique [0002] With the improvement of rural living standards and the improvement of the living environment, the discharge of domestic wastewater from rural residents is increasing, which has caused increasingly serious pollution to the agricultural ecological environment and water bodies. Due to the scattered living in rural areas, it is impossible to conduct centralized sewage treatment like cities. To treat rural sewage by traditional sewage treatment methods, one or several villages need to use a treatment system. The per capita treatment cost is so high that villages and farmers cannot afford it. Therefore, it is urgent to develop a sewage treatment system suitable for rural use. Contents of the invention [0003] The invention overcomes the shortcomings of the prio...

AI Technical Summary

Problems solved by technology

[0002] With the improvement of rural living standards and the improvement of the living environment, the discharge of domestic wastewater from rural residents is increasing, which has caused increasingly serious pollution to the agricultural ecological environment and water bodies. Due to the scattered living in rural areas, it is impossible to conduct centralized sewage treatment like cities. To treat rural sewage by traditional sewage treatment methods, one or several villages need to use a set of treatment system. The per capita treatment cost is high, and the villages and farmers cannot afford it. Therefore, it is urgent to develop a sewage treatment system suitable for rural use.

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