High-density aquaculture sewage collecting and processing method

Abstract

Provided is a high-density aquaculture sewage collecting and processing method. A still water area is arranged between the water outlet end of a breeding pond and a large water surface circulating water area and provided with a still water isolation wall, and the height of the still water isolation wall is 10-30 cm lower than the normal water level; a sewage collecting tank is arranged below the water surface from the still water isolation wall to the water outlet end of the breeding pond, and the slope ratio from the water outlet end of the breeding pond to the still water isolation wall of aslope-shaped tank bottom of the sewage collecting tank is 0.5-1.5%; a sewage discharge pipe support erected above the sewage collecting tank and a slide pole for supporting a sewage suction pump arearranged, and sewage sucked out by an under-liquid slurry pump is sent to a sewage discharge U-shaped pipe through a sewage discharge pipe and collected to a sewage processing tank through a sewage outlet. Large-area underwater sewage suction and discharge are conducted; organic deposits are recycled. Sewage suction operation is conducted underwater, and the organic deposits are taken out of a sewage processing tank to be subjected to stacking fermentation or used as organic fertilizer or other biological feed. The environment protection problem is solved, and organic matter is sufficiently used.

Description

technical field [0001] The invention relates to aquaculture technology, in particular to a method for collecting and treating high-density aquaculture sewage. Background technique [0002] Because the pollution exceeds the purification effect of the aquaculture water, it leads to the eutrophication of the aquaculture water, which brings a series of negative consequences, including the proliferation of harmful algae, and even the formation of algae blooms, ammonia nitrogen in the water and the bottom , nitrite nitrogen, hydrogen sulfide, etc. exceed the standard or seriously exceed the standard, harmful bacteria multiply, the disease of aquaculture organisms spreads, and aquaculture is difficult, etc.; in order to control the diseases of aquaculture breeding organisms, a large amount of drugs have to be used in the aquaculture water. All of these, on the one hand, will inevitably lead to no guarantee of aquatic product quality and safety, and no good economic and social benef...

AI Technical Summary

Problems solved by technology

[0002] Because the pollution exceeds the purification effect of the aquaculture water, it leads to the eutrophication of the aquaculture water, which brings a series of negative consequences, including the proliferation of harmful algae, and even the formation of algae blooms, ammonia nitrogen in the water and the bottom , nitrite nitrogen, hydrogen sulfide, etc. exceed the standard or seriously exceed the standard, the harmful bacteria multiply, the disease of the aquaculture organism spreads, and the aquaculture is difficult, etc.; in order to control the disease of the aquaculture breeding organism, a large amount of drugs have to be used in the aquaculture water.

All of these, on the one hand, will inevitably lead to no guarantee of aquatic product quality and safety, and no good economic and social benefits for aquaculture; on the other hand, the water environment has been

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