A multi-stage composite enhanced purification method for tidal rivers in coastal cities

Abstract

The present invention is a multi-stage water quality composite enhanced purification method for tidal rivers in coastal cities, comprising the following steps: according to the demand for ecological restoration of tidal rivers in coastal cities, the tidal rivers are divided into regions, and the river sections from the estuary to the upstream are divided into A in sequence. Zone, B zone, C zone, D zone and E zone; the first pre-sedimentation tank is set in the A zone, and the enhanced purification pool is formed in the B zone and D zone, and a plurality of artificial aquatic plants are arranged in the enhanced purification tank section and artificial aeration section; ecological restoration and landscape restoration areas are set in the C area; at the critical point of the B area, C area and D area, a porous ecological wall is set. The method of the present invention is also applicable to the ecological management of ordinary urban rivers, especially for the ecological restoration and management of tidal river sections affected by salt water in coastal cities, and has the effect of significantly improving the landscape function of urban river sections. It is a scientific and effective method. , an environmentally friendly governance method for sustainable development.

Description

technical field [0001] The invention relates to the technical field of river channel ecology, in particular to a multi-stage composite enhanced purification method for tidal river channels in coastal cities. Background technique [0002] A large amount of pollutants in the river channel flowing through the population gathering area are directly discharged into the river without treatment, causing serious pollution to the water body. In order to meet the needs of flood control and flood discharge, cities consider river reconstruction more from an engineering point of view. The river is cut and straightened, and the two sides of the river are solidified with cement and steel on three sides. With the disappearance of the environment, its ecological function and purification ability will also degrade, which will directly lead to the disappearance of a large number of organisms in the river, and the high-load pollution discharge will easily collapse the ecological system inside t...

AI Technical Summary

Problems solved by technology

[0003] Coastal cities also face another problem in urban river restoration, that is, the current ecological restoration of urban inland rivers is mainly based on the construction of freshwater ecosystems. Seawater intrusion during high tide will seriously affect the survival of freshwater organisms in the restored river section, destroying the artificial environment in the river. The ecological balance of the constructed water ecosystem

Images