Unpowered downstream river bank constructed wetland water quality purification system

Abstract

The invention discloses an unpowered downstream river bank constructed wetland water quality purification system. The unpowered downstream river bank constructed wetland water quality purification system comprises a landscape wetland constructed at the rear side of a revetment, wherein a retaining wall and an enclosing wall are sequentially constructed at the rear of the landscape wetland; a distribution ditch is formed in the space between the retaining wall and the enclosing wall; a waterproof solid wall is arranged at the upper part of the retaining wall; a guide wall with holes is arranged at the lower part of the retaining wall; a water pipe is laid under the landscape wetland; a water inlet of the water pipe is higher than a water outlet of the water pipe; the water inlet of the water pipe penetrates through the solid wall and is communicated with the distribution ditch; the water outlet of the water pipe penetrates through the revetment and is communicated with a river channel; a lifting baffle is arranged between the revetment and the landscape wetland. The unpowered downstream river bank constructed wetland water quality purification system disclosed by the invention combines water purification of the river channel with afforestation of the shore side, promotes water body exchange between the wetland and the river channel through waves or water-level fluctuation, and is free of energy consumption due to the passive type unpowered operation manner, convenient to manage, durable and stable, and particularly suitable for river channels, lakes and landscape water bodies which are constructed with stone revetments, wide in water surfaces, and capable of forming large waves.

Description

technical field [0001] The invention belongs to the technical field of comprehensive regulation of rivers, and in particular relates to a water quality purification system for an artificial wetland on a non-powered downstream river bank. Background technique [0002] Over the years, water conservancy projects have focused on flood control and drought relief, river bank safety, and the creation of uniform revetments. Large-scale hardened stone revetments have been built on rivers and lakes, so that the water-land ecotone can provide a good growth environment for various aquatic organisms. The tidal flats with important functions of greening, ecology and water purification have disappeared, and the self-purification ability of water bodies has been greatly reduced. Even in urban landscape lakes and ponds where no point source pollutants are discharged, turbid water landscapes and poor water quality are often present. [0003] Urban greening is independent from the planning an...

AI Technical Summary

Problems solved by technology

Although the hard rivers and lakes and ponds have green landscapes, the function of land greening is far lower than that of tidal wetlands with the same land occupation, resulting in various disadvantages such as isolation of water and land, low self-purification ability of water bodies, and deterioration of water ecological landscapes.

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