River channel in-situ purification and ecological remediation method

Abstract

The invention relates to a river channel in-situ purification and ecological remediation method which is applicable to elimination of black-odor, water quality improvement and ecological remediation projects of black and odorous river channels with interior sources polluted seriously. The method comprises the steps that river water is pumped out, bottom sludge is insolated, and interior source pollutants are removed through natural oxidation; the insolated bottom sludge is covered with clay, plowing is performed and insolation continues so as to further decrease the interior source pollutants; the insolated bottom sludge is used for building bank slopes to form gentle slopes with a certain slope gradient; insolation continues, and micropore aeration devices are installed at the river bottom; the floating plant technology is applied to the middle of a river channel; after water level recovery, emerged plants are planted on the built gentle slopes, waste water is purified in the flowing process, and the pollutants are removed in situ. Accordingly, in-situ treatment of the bottom sludge and improvement of the water quality in the river channel are realized, the project cost is lowered, and the treatment efficiency is improved.

Description

technical field [0001] The invention relates to technologies such as bottom mud disposal, sewage treatment, ecological restoration, etc., especially black and odorous river course in-situ purification technology and ecological restoration technology, and belongs to the technical field of environmental protection and ecological restoration. Background technique [0002] In recent years, my country is vigorously promoting the construction of ecological civilization. In 2015, it issued the "Water Ten Measures" with the core of improving the quality of the water environment. The black and odorous water bodies in the built-up areas of cities at the level and above are all controlled within 10%; by 2030, the proportion of good water quality in the seven major river basins in the country will reach more than 75% in general, and the black and odorous water bodies in urban built-up areas will be eliminated in general. However, the problem of water pollution in our country is still pro...

AI Technical Summary

Problems solved by technology

As can be seen from the above, bottom aeration, ecological floating bed, etc. are currently widely used technologies. However, the application of most technologies requires sewage interception measures or river dredging, and complete in-situ purification cannot be achieved.

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