Artificial wetland ecological sewage treatment system

Abstract

The invention discloses an artificial wetland ecological sewage treatment system, and relates to the technical field of artificial wetlands. The system comprises a sewage filtering device and an artificial wetland device, wherein a filtering plate is mounted in the sewage filtering device; the sewage filtering device is connected with a drain pipe; the drain pipe is connected with the artificial wetland device after being connected with a high-pressure water pump; and the artificial wetland device comprises an ecological purification layer, an ecological planting layer and an aeration aerator.Through the sewage filtering device, the sewage is preliminarily filtered; through an inclined bottom plate, sundries are more easily discharged;through the arrangement of the ecological purificationlayer and the ecological planting layer, the sewage is filtered and purified layer by layer; through the arrangement of the high-pressure water pump, the water pressure in the drain pipe is strong, and through the ecological purification layer, the pipe is not easy to block; through the arrangement of the aeration aerator, the sewage is aerated to improve the decomposition of the sewage by aquatic plants and loaches and to prevent secondary pollution of the purified sewage.

Description

technical field [0001] The invention mainly relates to the technical field of artificial wetlands, in particular to an ecological sewage treatment system for artificial wetlands. Background technique [0002] The constructed wetland system is artificially designed and constructed for sewage treatment, and is a new type of sewage treatment ecosystem developed in the 1970s. With its advantages of low construction and operation cost, strong decontamination ability, long service life, simple process, and diversified combinations, it has been widely used all over the world. It relies on the synergy of physical, chemical, and biochemical reactions among the substrate, aquatic plants, and microorganisms in the wetland system to treat wastewater. Because the constructed wetland has stable effluent quality, low investment, low energy consumption, strong impact resistance, and easy operation. The characteristics of simplicity and low operating cost have been widely used in the treatm...

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Problems solved by technology

But at present, clogging is a natural process in the operation of constructed wetlands, and it is also a difficult problem to be considered in design and management. According to the survey of more than 100 constructed wetlands in operation by the US Environmental Protection Agency, nearly half of the wetland systems are under Blockage occurred within five years after it was put into use. Excessive blockage will reduce the water conservancy load of the wetland, shorten the operating life, and seriously affect the long-term operation of the wetland.

Moreover, uniform water distribution cannot be achieved, and long-term operation is prone to clogging, and the sewage treatment effect is significantly reduced. At the same time, the cleaning and maintenance of fillers is time-consuming and laborious, which seriously affects the long-term operation of subsurface flow wetlands.

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