Heterotopic ecological ditch pollution interception and purification method for water supplementing system

Abstract

The invention belongs to the technical field of sewage purification, and particularly discloses a heterotopic ecological ditch pollution interception and purification method for a water supplementingsystem. The method comprises the following steps: (1) uniformly collecting urban non-point source sewage and rainwater and sending to a sewage plant to be primarily treated to obtain reclaimed water,and storing and collecting the reclaimed water; (2) dividing the time of day into two periods: a circulation period and a static period; (3) in each circulation period, enabling the stored and collected reclaimed water to finally flow to secondary rivers and lakes by virtue of ecological ditches, wherein the ecological ditch is successively provided with a water distribution area, a physical filtration area, a microorganism treatment area, a denitrification area and a plant absorption area along the flowing direction of reclaimed water. According to the scheme, the reclaimed water is discharged into the secondary rivers and lakes after being purified by the ecological ditches, so that the problem of repeated water quality in some watersheds caused by less water supplementation of the secondary rivers and lakes can be effectively solved, and the waste water can be effectively used.

Description

technical field [0001] The invention belongs to the technical field of sewage purification, and in particular relates to a method for intercepting and purifying pollution of ectopic ecological ditches in a replenishment water system. Background technique [0002] With the continuous acceleration of urbanization and the rapid increase of urban population, the contradiction between urban environmental pollution and economic development has become increasingly prominent, and water pollution has become a public hazard for sustainable urban development. Sources of water pollution can be divided into two categories: point source pollution and non-point source pollution. Point source pollution caused by large and medium-sized enterprises falls within the scope of internal governance of the enterprise; while urban domestic sewage, a small amount of sewage discharged by small enterprises, and agricultural The non-point source pollution caused by fertilization and pesticide use has a ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for intercepting and purifying the pollution of ectopic ecological ditches in the replenishment water system, so as to solve the problem that the secondary rivers and lakes have less replenishment water, which leads to repeated problems in water quality in some river basins

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