Plant filter bed ecological technology

Abstract

The invention relates to a plant filter bed ecological technology, and belongs to a wastewater treatment technique for constructed wetlands. The technology disclosed by the invention mainly comprises a stabilization pond, a plant filter bed, a deep purifying pond, and a reinforced dephosphorization unit, wherein the stabilization pond provides anaerobic environment and performs preliminary pretreatment on wastewater to remove SS, an ammonifying process is performed, and organic matters are subjected to hydrolysis acidification so as to obtain micromolecules; water flowing out of the stabilization pond enters the plant filter bed, through an aquatic plant stereoscopic net root system and biomembranes attached to the surface of the root system, the organic matters in a water body are removed, and a nitration reaction is performed; water flowing out from the plant filter bed enters the deep purifying pond; the deep purifying pond provides oxygen-deficient environment and is mainly used for converting nitrate nitrogen into nitrogen, so that decarburizing and denitriding the water body are realized; and water flowing out of the stabilization pond enters the reinforced treatment unit. A calcite filling is placed in the reinforced treatment unit, so that ions such as phosphate radicals form phosphate precipitations, and the dephosphorization effect is improved. The plant filter bed in the technology does not need the filling, so that the mounting and the operation are convenient, and the plant filter bed ecological technology is especially suitable for treatment of individually-drained wastewater in rural areas.

Description

Technical field: [0001] The invention belongs to the field of sewage treatment, and in particular relates to a sewage artificial wetland treatment technology. technical background: [0002] With the development of rural economy, the amount of sewage discharged from rural production and living is increasing day by day. Serious pollution not only endangers the lives of farmers and agricultural production safety, but will eventually affect the safety of urban water environment. However, due to the characteristics of small drainage, large daily variation coefficient, low concentration of organic matter, intermittent discharge and difficulty in collecting and centralized treatment of rural sewage, the problem of water pollution in rural areas has not been effectively solved. Therefore, in the vast rural areas of our country, it is urgent to find a solution. A low-investment, low-energy, low-cost, and easy-to-promote sewage treatment process can improve the increasingly serious wa...

AI Technical Summary

Problems solved by technology

However, due to the characteristics of small drainage, large daily variation coefficient, low concentration of organic matter, intermittent discharge and difficulty in collecting and centralized treatment of rural sewage, the problem of water pollution in rural areas has not been effectively solved. Therefore, in the vast rural areas of our country, it is urgent to find a solution. A low-investment, low-energy, low-cost, and easy-to-promote sewage treatment process to improve the increasingly serious water pollution in rural areas

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