Ecological shore zone purifying structure and river purifying system with same

Abstract

The invention discloses an ecological shore zone purifying structure, and aims to solve the defects that a treatment process taking anoxic or anaerobic environment as the major exists in a purifying system in the prior art, the application range is narrower and the like. The ecological shore zone purifying structure comprises a vertical flow artificial wetland purifying system and a nature-imitated wetland purifying system which are of trough structures, wherein two troughs are internally filled with adsorption filler; the nature-imitated wetland purifying system is totally or partially immersed in water, and the height is lower than that of the vertical flow artificial wetland purifying system; a water distribution pipe is arranged on the upper surface of the vertical flow artificial wetland purifying system, and a water collection pipe is arranged at the bottom part of the vertical flow artificial wetland purifying system; a water outlet of the water collection pipe penetrates through the trough wall of the vertical flow artificial wetland purifying system so as to guide water to the nature-imitated wetland purifying system, and effluent automatically flows into a river after being treated through the nature-imitated wetland purifying system. The ecological shore zone purifying structure disclosed by the invention fully utilizes ecological space in rivers, and is particularlysuitable for governance and ecological repairing of urban mildly contaminated rivers and brooks, urban river non-point source pollution control, river shore zone landscape increment and the like.

Description

technical field [0001] The invention relates to the field of treatment and restoration of the water ecological environment, in particular to an ecological bank zone purification structure and a river channel purification system with the structure. Background technique [0002] Traditional river revetment works are mainly dedicated to basic functions such as flood control, drainage, water diversion and shipping. Especially in urban rivers, in order to ensure the safety of flood control in rivers, the design ideas of hard materials such as concrete and mortar block stones are basically used. Less consideration should be given to other functions such as ecology, landscape, and pollutant purification of the river. At present, the ordinary pollution of urban rivers in my country is serious, and the water quality is basically inferior to the V standard of surface water. The non-point source pollution is particularly prominent in the rainy season. At the same time, the land resourc...

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Problems solved by technology

The system still has the following deficiencies: 1. The bed body of the horizontal subsurface flow ecological filter tank is basically in a saturated state, and there are few aerobic areas. Anaerobic state forms a degradation zone dominated by anaerobic microorganisms, which is not conducive to the efficient removal of organic matter, ammonia nitrogen and other pollutants; 2. Due to the low purification efficiency of ammonia nitrogen by the horizontal subsurface flow ecological filter tank, in order to achieve better purification effect, the system It is bound to increase the width of the system in the riparian zone, and it cannot be used in relatively narrow rivers without affecting the flood discharge function, thus reducing its scope of application to a certain extent; 3. The water distribution area of ​​the system is small, The hydraulic load per unit area of ​​the water distribution area is relatively high, which can easily cause blockage, reduce the operating life of the system, and increase its operating cost; 4. The patent constructs the horizontal underflow filter tank in the river channel, lacking the ecological landscape level of the river bank sense, and the natural transition from the river bank to the landscape in the river channel has not been realized, and the landscape effect is relatively rigid

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