Ecological restoration method for black and odorous riverway

Abstract

The invention provides an ecological restoration method for a black and odorous riverway. The method comprises the following steps: (1) rapidly and fully stirring bottom mud, putting a mineral bottommud ecological restoration material into a water body and stirring the bottom mud at the same time for uniformly dispersing the material in the bottom mud, standing the mixture for 1-3 days, then adding bacterial sludge powder into the water body and stirring the water body, thus completing bottom mud restoration after 3-5 days of microbial degradation; (2) using an aeration oxygenation method forincreasing dissolved oxygen in the water body, and then arranging carbon fiber ecological grass in the water body; and (3) planting aquatic plants in the water body to absorb organic matters and heavy metal pollution in the water body, putting benthic organisms into the water body to construct a benthic ecosystem, and finally putting fishes into the water body to control the growth of algae in the water body. According to the method, the inorganic mineral material and the bacterial sludge powder are adopted for ecological restoration of the bottom mud, then the water body habitat and the water body ecological system are sequentially constructed, comprehensive restoration of the bottom layer, the water body and the environment of the riverway is completed, treatment is thorough, and the treatment efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of river channel management, and in particular relates to an ecological restoration method for black and odorous river channels. Background technique [0002] The main reasons for the black and odorous water body are: the discharge of external pollutants into the water is large; the endogenous pollution increases, but the self-purification ability of the water body is weak, which makes the excessive pollution lead to the deterioration of the water body. At the same time, most water bodies lack ecosystems, and the self-purification ability of water bodies is low. [0003] There are many ways to remove N and P from the overlying water. However, because many polluted water bodies have been polluted for a long time, a large amount of N and P have accumulated in the sediment, and the endogenous pollution is serious. How to quickly and effectively eliminate these Some endogenous pollution has become a major diffi...

AI Technical Summary

Problems solved by technology

At present, natural inorganic minerals are mostly used for adsorption to complete the ecological restoration of sediment. Due to the limited adsorption rate of minerals, the amount of minerals put in is large, which leads to the reduction of water bodies and the low efficiency of water body treatment.