Circulating water treatment tower and treatment system of fish multiplication and releasing station in hydropower project

Abstract

The invention discloses a fish enhancement and releasing station circulation water treatment tower and a treatment system of water-power engineering, belonging to the field of water resources and hydropower engineering, and providing a fish enhancement and releasing station circulation water treatment tower which is relatively simple in structure, relatively convenient to operate and maintain and meanwhile capable of increasing the content of dissolved oxygen in purified water, of the hydropower engineering. A first screening plate, a packing filtering layer, a zeolite fluidized bed layer and a second screening plate are arranged inside the treatment tower, so as to achieve purification treatment on wastewater. Meanwhile, by feeding air into the zeolite fluidized bed layer, the fluidization effect is improved, and the content of dissolved oxygen in water is increased; in addition, a salt dissolving pond can be constructed, and regeneration operation on zeolite can be conveniently performed. By adopting the fish enhancement and releasing station circulation water treatment tower and the treatment system, the sewage purification effect is improved, the equipment occupied space is reduced, the content of dissolved oxygen in purified water is increased, the operation and the maintenance are convenient, the regeneration operation on zeolite is simplified, and the regeneration efficiency is improved.

Description

technical field [0001] The invention relates to the field of water conservancy and hydropower engineering, in particular to a circulating water treatment tower and a treatment system of a fish breeding and releasing station in hydropower engineering. Background technique [0002] In recent years, the construction of hydropower projects in my country has entered a peak period, but the construction of power station gates and dams has divided the original fish into two groups, the upper and lower groups, making it impossible for genetic exchanges and weakening the viability of the population. Under the trend of increasing attention to the ecological protection of hydropower projects from all walks of life, the environmental and ecological damage caused by the construction and operation of large-scale hydropower projects has become a hot spot of social concern, and the implementation of environmental and ecological protection measures is directly related to the project. The overal...

AI Technical Summary

Problems solved by technology

[0006] (1) There are many processing units, and each processing unit has an independent box, which occupies a large area;

[0007] (2) Multi-stage filtration and multi-stage biological treatment methods are mostly used, which are generally suitable for fishery water for high-density farming, and the operation and maintenance are relatively complicated

[0008] (3) Adding zeolite powder directly or installing zeolite filter equipment, the contact time between zeolite and water is short, the reaction is not sufficient, and the pollutant removal effect is not ideal;

[0009] (4) The fishery breeding industry needs to take out the zeolite and soak it in salt water for the regeneration of the fishery breeding industry, which requires manpower. Usually, a special salt-dissolving pool is set up next to the zeolite filter to increase the floor space;

[0010] (5) Only zeolite treatment is used, and the removal efficiency of chemical oxygen demand (COD) is not high;

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