Bioreactor-plant nursery retention tank combined system

Abstract

The invention discloses a bioreactor-plant nursery retention tank combined system which comprises a water distributing tank, a bioreactor, an adjusting tank and a plant nursery retention tank, whereinthe water distributing tank, the bioreactor, the adjusting tank and the plant nursery retention tank are sequentially combined from front to back; the water distributing tank is connected with the bioreactor through a pipeline, outlet water of the bioreactor can directly enter the adjusting tank, and an overflow opening of the adjusting tank is connected with the plant nursery retention tank. Domestic wastewater is collected and sequentially flows through the devices to be further purified. According to the bioreactor-plant nursery retention tank combined system disclosed by the invention, plants and ecological units are organically combined; thus, the bioreactor-plant nursery retention tank combined system has good adaptability to water quality and water volume change, has simpleness inoperation and management, has a good treating effect on rural distributed sewage and especially has a high-efficiency and stable treating effect on phosphorus nutrient salt which is difficult for an ordinary biological system to treat; a COD and TP removing rate can reach 90% or more, and a TN removing rate is as stable as 85 to 90%; the bioreactor-plant nursery retention tank combined system is suitable for treating rural distributed sewage and beautifying rural environment.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, in particular to a bioreactor-vegetation retention tank combined system. Background technique [0002] With the rapid development of the rural economy, the discharge of rural domestic sewage has increased rapidly, which has caused serious pollution to the surrounding soil and natural water bodies. Therefore, how to effectively deal with decentralized rural sewage and improve environmental pollution has become an urgent problem to be solved. The centralized sewage treatment system has large investment, high construction costs, and complex operation and management, which cannot meet the requirements of small-scale and scattered rural sewage. At the same time, a single biological or ecological treatment method includes biological filters, oxidation ponds, artificial wetlands, etc. , there are problems such as low processing efficiency and unstable system operation. On the basis of fully c...

AI Technical Summary

Problems solved by technology

The centralized sewage treatment system has large investment, high construction costs, and complex operation and management, which cannot meet the requirements of small-scale and scattered rural sewage. At the same time, a single biological or ecological treatment method includes biological filters, oxidation ponds, artificial wetlands, etc. , there are problems such as low processing efficiency and unstable system operation

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