Method for treating black and smelly rivers by electrochemistry combined with biological ecology

Abstract

The invention relates to a method for treating black and smelly rivers by electrochemistry combined with biological ecology. The method is characterized in that an electrochemical treatment device, abiological contact oxidation system, aeration systems, a microbial agent, a sediment biological agent, biological grids and an artificial floating island are included. A biological contact oxidationpool is formed at the cofferdam at the front end of a to-be-treated river, electrochemical treatment is conducted in the river simultaneously, the river is segmented, and the aeration systems are arranged for aerobic aeration treatment; electrochemical treatment is ended before the microbial agent is spread, and aerobic aeration treatment is maintained; the sediment biological agent is spread forsediment oxidation remediation treatment, and aerobic aeration treatment is maintained; the biological grids capable of adsorbing microorganisms and plankton are arranged in the middle of the river atcertain intervals to allow the microorganisms and the plankton to reproduce; the artificial floating island is arranged in the middle of the river, and emergent aquatic plants are planted on the artificial floating island to restore the natural self-purification ability of the to-be-treated river.

Description

technical field [0001] The invention relates to a method for treating black and odorous rivers, in particular to a method for treating black and odorous rivers by means of electrochemistry combined with biological ecology. Background technique [0002] Black and odorous rivers are mainly caused by external pollution continuously entering the river, resulting in the river's pollution-holding capacity being greater than its self-purification capacity. The black and smelly rivers are seriously polluted, and the dissolved oxygen is almost zero. The river sediment is an important source of internal pollution in the river. The black and odorous sediment continuously releases organic matter and inorganic salts into the water body, which deteriorates the water quality. The oxygen consumption of the sediment is the main part of the oxygen consumption of the water body, which is the main reason for the black and odorous river. The denitrification of the sediment , Methanation causes ...

AI Technical Summary

Problems solved by technology

At present, in the treatment of urban black and odorous rivers, a single or several technologies are used, which lacks system and coherence. For example, the use of bio-ecological technology alone has the disadvantages of slow effect, difficulty in lasting, and low efficiency. Electrochemical sewage treatment is due to high cost. , rarely used alone in the treatment of black and odorous rivers

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