Composite constructed wetland system for sewage treatment and ecological restoration

Abstract

The invention discloses a composite constructed wetland system for sewage (waste water) treatment and ecological restoration. The composite constructed wetland system comprises four parts including a pressure regulating inspection well, a high-load hydrolysis tank, a natural reaeration / sedimentation integrated device and a constructed wetland, and the constructed wetland further comprises a constructed wetland body, an anti-blocking inlet water distributor, a strengthened dephosphorization denitrification groove, an outlet water collector and the like. The pressure regulating inspection well is located at the most front end of the system, sewage sequentially passes through the pressure regulating inspection well, the high-load hydrolysis tank and the natural reaeration / sedimentation integrated device to enter the constructed wetland, inlet water is distributed through the anti-blocking inlet water distributor, and the water is collected and discharged through the outlet water collector after being subjected to treatment of the constructed wetland body and the strengthened dephosphorization denitrification groove. The composite constructed wetland system is mainly used for urban sewage treatment, deep purification of initial stage rainwater and industrial tail water and the ecological restoration of polluted ground water bodies such as rivers and lakes.

Description

technical field [0001] The invention relates to a composite artificial wetland system for sewage (waste) water treatment and ecological restoration, mainly used for urban sewage treatment, deep purification of initial rainwater and industrial tail water, and ecological restoration of surface water bodies such as polluted rivers and lakes , belongs to the technical field of sewage (waste) water treatment. Background technique [0002] Constructed wetland is an ecological sewage treatment technology developed in the 1970s. Due to its characteristics of low investment, low operating cost, simple operation, and stable treatment effect, it has been widely used in various sewage (waste) water treatment fields. more widely used. However, since the artificial wetland is derived from simulating the natural ecology, it still has some natural and extensive characteristics, especially easy to block, the lack of dissolved oxygen affects the nitrification and denitrification effect, and ...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a composite constructed wetland system for sewage (waste) water treatment and ecological restoration, which can stabilize and enhance the operation effect of constructed wetlands, and solve the practical problems of easy blockage of constructed wetlands, poor denitrification and phosphorus removal effects , mainly used for urban sewage treatment, deep purification of initial rainwater and industrial tail water, and ecological restoration of surface water bodies such as polluted rivers and lakes

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