Sewage collecting and discharging process of flowing water breeding tank

Abstract

The invention relates to a sewage collecting and discharging process of a flowing water breeding tank. The sewage collecting and discharging process comprises the following three steps: 1, micro-bubble aeration is carried out on the bottom between a fish blocking net and a gas-liquid separating baffle plate, the surface tension of bubbles absorbs a part of sewage and the sewage upwards floats, and further enters into a first sewage collecting groove under the actions of buoyancy and a foam guide plate; a pipe hole in the side wall of the flowing water breeding tank and communicated with the bottom of the first sewage collecting groove is used, so that the sewage in the first sewage collecting groove is pumped out through a pump regularly; 2, water flows flow backwards from the lower part of the gas-liquid separating baffle plate to a sinking buffer area, and the remaining sewage is collected in a second sewage collecting groove for deadweight sinking; a pipe hole in the side wall of the flowing water breeding tank and communicated with the bottom of the second sewage collecting groove is used, so that the sewage is pumped out through the pump regularly; 3, water which flows out of the flowing water breeding tank is finally filtered through a sewage blocking net; the sewage blocking net is regularly cleaned. The sewage discharging process of the flowing water breeding tank disclosed by the invention is high in sewage discharging capacity and convenient in sewage collection.

Description

technical field [0001] The invention relates to a blowdown process for flowing water aquaculture tanks, and belongs to the technical field of blowdown for flowing water aquaculture tanks. Background technique [0002] The running water aquaculture tank is used for aquaculture, and generally has a box structure, and the left and right ends are constructed of mesh plates or mesh ropes, through which water flow can pass. [0003] The sewage discharge system of the existing running water aquaculture tank generally sets a sewage collection area at the end of the aquaculture tank, and vertically sets a baffle plate about 1 meter above the bottom at the end of the sewage collection area, and then adopts walking sewage suction 4 pairs of sewage collection The tank is used to absorb sewage. This kind of sewage system has poor sewage collection and sewage discharge effects, and most of the sewage enters the pond with the water flow. How to provide a sewage collection and discharge pr...

AI Technical Summary

Problems solved by technology

[0003] The sewage system of the existing running water aquaculture tank generally sets a sewage collection area at the end of the aquaculture tank, and vertically sets a baffle plate about 1 meter above the bottom at the end of the sewage collection area, and then adopts walking sewage suction 4 pairs of sewage collection The sewage collection and discharge effect of this sewage system is not good, and most of the sewage enters the pond with the water flow.

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