Pond bottom blowdown circulatory system

Abstract

The invention discloses a pond bottom blowdown circulatory system. The pond bottom blowdown circulatory system comprises a pond main body, wherein at least one blowdown hole is formed in the bottom of the pond main body, the bottom of the pond main body forms a certain slope to a corresponding blowdown hole, a fish screen is arranged at the blowdown hole, the bottom of the pond main body corresponding to the blowdown hole is in a shape like the bottom of a pot, the inner bottom of the blowdown hole is of a conical structure, an eddy blocking cover is accordingly arranged above the blowdown hole in the pond main body, and the total area of gaps between the eddy blocking cover and the blowdown hole is less than or equal to the area of the blowdown hole. The pond bottom blowdown circulatory system, by virtue of structural design of the blowdown hole of the pond main body and arrangement of the eddy blocking cover above the blowdown hole, can greatly enhance capability of discharging cultivation sediments and sewage at the bottom of a pond and also effectively prevents clear water above the blowdown hole from being discharged in quantity, and discharged bottom layer sewage enters a solid-liquid separation mechanism, so that harmonious ecological balance among animals, plants and microorganisms is achieved, and water subjected to wetland treatment is recycled into a cultural pond to be utilized.

Description

technical field [0001] The invention relates to the fields of integrated innovation and supporting assembly of pond development environmental protection, ecological breeding engineering equipment and physical and biological purification technologies, and specifically relates to a pond bottom sewage circulation system that realizes "resource saving and good environment". Background technique [0002] In recent years, in most intensive farming ponds in my country, the aquaculture sediment has exceeded the self-purification capacity of the water body, resulting in eutrophication and endogenous pollution of the aquaculture water. Traditional aquaculture ponds become fish cesspools, draining the upper layer of ponds with high dissolved oxygen, high temperature, and a lot of fish natural bait (plankton). The aquaculture sediment decomposes at the bottom of the pond to consume oxygen, release toxic and harmful substances, pollute the water body, and cause fish diseases Frequent occ...

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Problems solved by technology

However, in the practical application of this technical solution, we found that the use of this sewage discharge method will cause a large amount of clear water above the sewage outlet to be discharged, and the fish feces relatively far away from the sewage outlet are not easy to be discharged. In this way, under long-term deposition, There will also be the above-mentioned technical problems

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