Pond water quality biological purification device based on aeration

Abstract

The invention relates to a pond water quality biological purification device, and belongs to the field of cultivation. The pond water quality biological purification device based on aeration is characterized in that a filter cotton barrel on an inner layer and a biological filter barrel on an outer layer are included, the filter cotton barrel and the biological filter barrel are concentrically arranged, filter cotton is arranged in the filter cotton barrel, buoyancy biological filter materials are arranged in the biological filter barrel, a vertically-arranged water lifting pipe is arranged in the center of the device, culture pond water enters the water lifting pipe from the bottom of the water lifting pipe, the water is lifted to the top of the water lifting pipe and flows out, the water flows into the filter cotton barrel, the water flows into the biological filter barrel through overflowing barriers after being primarily filtered by the filter cotton, an annular aeration hose is arranged at the bottom of the biological filter barrel, a plurality of aeration holes are evenly formed in the annular aeration hose, air is sprayed out of the aeration holes to form a biological fluidized bed, the water is secondarily purified, and flows out through the overflowing barriers, the bottom plate of the biological filter barrel is a punched plate, a dirt collector in an inverse circular truncated cone shape is arranged below the punched plate, and a dirt collecting opening in the bottom of the dirt collector is connected with a siphon blowdown pipe to discharge sewage.

Description

technical field [0001] The invention relates to the technical field of pond cultivation, in particular to an aeration-based pond water biological purification device. Background technique [0002] At present, in my country, especially in the Pearl River Basin, high-density intensive culture is the main production mode of pond culture. High-density farming means a large amount of baiting, resulting in a large accumulation of excrement from farmed fish. Only relying on the algae and microbial system in the pond to decompose and absorb and purify pollutants in the water to maintain water quality, the purification efficiency is low, and it is difficult to meet the requirements. The needs of high-density breeding often require water exchange to maintain water quality. The discharged wastewater contains relatively high pollutants and is discharged directly without treatment, which brings certain pollution to the environment; although the factory farming model can use a complete se...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a pond water quality biological purification device based on aeration, so as to solve the problem that current physical treatment methods such as physical adsorption consume water resources and pollute the external environment, while chemical methods are easy to cause chemical residues although they are effective defect

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