Method and device for purifying combined-flow artificial floating island water body

Abstract

The invention relates to a method and a device for purifying combined-flow artificial floating island water bodies. The device is provided with an artificial floating island frame; particle filling areas (6) are arranged in the artificial floating island frame; tightly accumulated particle fillers (6a) are filled in the particle filling areas; the particle filling areas are distributed at the lower part of the artificial floating island frame in a dispersed manner; sparse fillers (7a) with good overflowing property are arranged between the dispersed particle filling areas (6c) to form a sparse filling area (7) in which the flow is obviously higher than the osmosis flow in the particle filling areas; the particle filling areas are distributed at the upper part of the artificial floating island frame in a whole area or in sub-area to form an upper layer particle filling area on which humidogene emergent aquatic plants can be planted. In the invention, different filling areas are arranged to form combined flow of coexistence of porous media seepage and space continuity flow, thus fully purifying water bodies under the actions of physics, chemistry, plants and microorganisms and the like, and achieving the high effects of nitrogen and phosphorus removal by adopting the invention to process eutrophic surface water bodies, such as rivers and lakes and the like.

Description

technical field [0001] The invention belongs to a method and a device for treating sewage, in particular to a method and a device for treating sewage on an artificial floating island. Background technique [0002] Eutrophication of water body is one of the main environmental problems faced by human beings, and it is also one of the environmental problems that have troubled our country for many years. Eutrophication of water body is mainly caused by nitrogen and phosphorus in point source pollution and non-point source pollution. Point source pollution is mainly due to the fact that our country's municipal facilities are not perfect at present, and the construction of urban sewage treatment plants cannot meet the needs of economic and social development. The national urban domestic sewage treatment rate is only 37.4%, and a large part of untreated sewage is directly Discharged into receiving water bodies such as rivers and lakes; non-point source pollution is mainly due to t...

AI Technical Summary

Problems solved by technology

Due to the disadvantages of low purification efficiency, high investment, and poor flexibility, the former technologies have limited their large-scale promotion and use.

The existing artificial floating island technology has the advantages of low investment, high flexibility, and good purification effect on nitrogen in river water, but its disadvantage is that the purification effect on phosphorus is very poor, so it needs to be further developed. Functional Artificial Floating Island Technology

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