Ecological restoration process for eutrophic water body

Abstract

The invention discloses an ecological restoration process for a eutrophic water body. According to the characteristics of the eutrophic water body and concentrations of pollutants, the wastewater canbe pretreated by selectively using a biochemical and advanced oxidation process to ensure that the concentration of the organic pollutants in the wastewater is reduced to a certain range, at the sametime, the biochemical and advanced oxidation process plays the roles of disinfection and sterilization, then through an ecological chain formed by aquatic plants planted in a three-dimensional mannerand microorganisms and aquatic animals bred in a three-dimensional manner, further removal of the organic pollutants in the water body is completed, after the water body is purified to a certain degree, according to the specific conditions of water quality, the wastewater can be subjected to advanced treatment by using a secondary advanced oxidation treatment device to ensure standardized discharge or recycling of the wastewater, and finally the purpose of ecologically restorating the eutrophic water body is achieved; and in the whole treatment process, chemicals do not need to be added, the operating costs are low, the treatment efficiency is high, the utilization of land resources is high, and the aquatic product value is high.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to an ecological restoration process for eutrophic water bodies. Background technique [0002] Sewage, as the main pollutant in modern times, has caused a great impact on the environment. Most of the common pollution methods of sewage to the environment are eutrophication. Eutrophication is a phenomenon of water pollution caused by excessive plant nutrients such as ammonia nitrogen and phosphorus. . Under natural conditions, as the river entrains alluvium and the remains of aquatic organisms continue to settle and deposit on the bottom of the lake, the lake will transition from a flat nutrient lake to a eutrophic lake, and then evolve into a swamp and land. This is an extremely slow process. However, due to human activities, after a large amount of industrial wastewater, domestic sewage, and plant nutrients in farmland runoff are discharged into slow-flowing water bodies such as lak...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the treatment of eutrophic water is directly treated by mechanical equipment plus chemical agents (COD treatment equipment), and the treated water is discharged. However, this method requires a large initial investment and high operating costs for the treatment of eutrophic water. The amount of maintenance is large (high-value COD treatment equipment must be purchased), the removal effect of ammonia nitrogen and phosphorus is not obvious, and the nutrients in the eutrophic water body have not been effectively used, which hinders the development of low-carbon economy and economy

Images