Method for cutting low-pollution water load of venous riverway

Abstract

The invention discloses a method for cutting low-pollution water load of a venous riverway and belongs to the field of water treatment. The method comprises the following steps: (1) constructing the venous riverway by utilizing a waste riverway or a bottomland near-natural type riverway, (2) arranging an ecological floating island and a shoreside restoration belt in the upper stream of the venous riverway according to the direction of current, (3) arranging an ecological water permeable dike between the upper stream and the midstream of the venous riverway, (4) arranging a submerged type ecological bed and a biological contact oxidation bed in the midstream of the venous riverway, (5) arranging an ecological water permeable dike between the midstream and the lower stream of the venous riverway, and (6) arranging an ecological floating island and a shoreside restoration belt in the lower stream of the venous riverway. Through the application of the method, the removing rates of COD, ammonia nitrogen, total nitrogen and SS can reach over 60 percent respectively so as to make the venous riverway achieve good ecological effect and landscape effect finally. The method realizes the integration of functionality, ecology and landscape of the riverway, achieves the treating effect of clean water, green bank and beautiful scene, and provides guarantee for water quality of a river network area.

Description

technical field [0001] The invention relates to a water body pollution control method, more specifically a method for reducing the low-pollution water load of venous rivers. Background technique [0002] Sewage treatment is to use various methods to separate the pollutants contained in the sewage, or to convert them into harmless and stable substances, so that the sewage can be purified. Modern sewage treatment technology can be divided into physical method, chemical method and biological method according to its working principle. (1) The physical treatment method mainly uses methods such as filtration, sedimentation, and flotation to remove suspended solids. (2) Chemical treatment methods include neutralization, oxidation, chemical coagulation, electrolytic coagulation, ion exchange and other methods. Neutralization makes the pH value of the waste liquid close to neutral. Oxidation method is to use air or oxidant to oxidize organic substances in wastewater into harmless ...

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problem that the pollution of the existing river water body is aggravated and difficult to deal with, the present invention provides a method for reducing the low-pollution water load of venous rivers, using submerged ecological bed technology, biological contact oxidation technology, ecological floating island technology and ecological transparent Dams, this method can solve the pollution problem of venous channels in the river network area of ​​the basin, and effectively remove pollutants such as nitrogen and phosphorus in sewage

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