A purification method for controlling external pollution sources and ecological restoration of black and odorous river courses

Abstract

The invention relates to a purification method of controlling a foreign pollution source and ecologically restoring a black-odor riverway. The purification method adopts a process combining processes of pretreating sewage outlet wastewater by virtue of a biofilm purification device, planting aquatic plants in the riverway, stocking aquatic animals, installing aeration oxygen increasing equipment and the like. Compared with an existing river ecologic restoration process, the purification method can be used for effectively controlling a sewage outlet of a small size polluted riverway to be adapted to great fluctuation of the riverway water quality and the climate conditions, has strong adaptability to the water quality variation, is good in resistance to shock loading and can be used for effectively removing the phenomenon of black-odor river water as well as has a relatively good effect of removing organic carbon, nitrogen and phosphorus; According to the purification method, the treated effluent quality is stable, the engineering investment is little, the running cost is low, and the purification method is suitable for treating riverway waters with various pollutions.

Description

technical field [0001] The invention relates to a purification method for controlling external pollution sources and ecological restoration of black and odorous rivers, in particular to a river purification process mainly based on ecological restoration methods combined with sewage biochemical treatment methods, and belongs to the technical field of ecological restoration. Background technique [0002] With the development of social production, rivers all over the world are facing different degrees of pollution from industry, agriculture, life and other aspects. Landscape water bodies such as lakes and rivers in cities are an important part of urban human settlements, but due to their characteristics of easy pollution, small water environment capacity, and poor self-purification ability of water bodies, they are easy to become the recipients of domestic sewage, rainwater and garbage for residents. body, resulting in a large consumption of dissolved oxygen in the water body, ...

AI Technical Summary

Problems solved by technology

Landscape water bodies such as lakes and rivers in the city are an important part of the urban human settlement environment, but due to their characteristics of easy pollution, small water environment capacity, and poor self-purification ability of water bodies, they can easily become the recipients of domestic sewage, rainwater and garbage for residents. body, resulting in a large consumption of dissolved oxygen in the water body, resulting in a lack of oxygen in the water body and a black and odorous state, causing a crisis in the entire ecosystem

[0003] River pollution is a common phenomenon in my country's urban river networks. The treatment of black and odorous rivers in cities in my country mainly uses municipal engineering methods such as sewage interception, bank revetment, and dredging. However, most suburban rivers cannot be carried out due to lack of funds and lack of unified planning. limited pollution interception

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