Constructed wetland for sewage interception treatment at river outlet

Abstract

The invention relates to an artificial wetland for sewage interception treatment at a river outfall, which comprises an interception and filtration grid frame and an interception revolving door, the interception and filtration grid frame and the interception revolving door are enclosed with the river bank to form an internal treatment space for sewage interception and the interception rotation The door is directly opposite to the drainage outlet on the river bank. The intercepting and filtering net frame is an inner and outer double-layer net frame structure and the periphery is covered by a filter net cover. The interior of the intercepting and filtering net frame is filled with filter packing, and aquatic plants are planted on the filtering packing, and the sewage is intercepted and treated internally. In the water body of the space, there are a number of biofilm fillers, a number of slow-release carbon source supplementary pipes and a number of oxygen-enriched phosphorous supplementary pipes. The invention can realize high-efficiency purification treatment of pollutants in drainage, effectively reduce the content of nitrogen and phosphorus organic pollutants, and at the same time ensure the flood discharge capacity of river outlets.

Description

technical field [0001] The invention belongs to the technical field of artificial wetland water purification, and in particular relates to an artificial wetland for sewage interception treatment at river outlets. Background technique [0002] As an important carrier of urban surface water resources, urban water bodies not only perform the natural function of material and energy transport, but also have functions such as water supply, flood discharge, drainage, irrigation, shipping, landscape, and tourism. Due to the long-term high-speed economic and social development, many urban water bodies in my country are facing serious eutrophication and even black and odorous problems. At present, with the gradual deepening of ecological civilization construction, the governance of urban black and smelly rivers is gradually put on the agenda. Many cities have established a "river chief system" to carry out ecological restoration of urban black and odorous water bodies. Practice has ...

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Problems solved by technology

Pollution entering urban water bodies through rainwater pipes, it is difficult to maintain the long-term stability of river water quality only by means of ecological restoration in the river

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