Floating type biofilter for cultured pond

Abstract

The invention relates to a biofilter, in particular to a floating type biofilter for a cultured pond. The floating type biofilter is characterized by comprising an inner concentric groove body and an outer concentric groove body which are concentric, the upper ends of the inner concentric groove body and the outer concentric groove body are respectively provided with an opening, the inner groove body is a biological felt bin, the inside of the biological felt bin is provided with a biological felt, the surface of the biological felt can block impurities, the outer groove body is a biological filtering material bin, the inside of the biological filtering material bin is filled with porous filtering material, the inside of each pore of the porous filtering material is adhered with biological bacteria, a vertical water lifting pipe penetrates through the centers of the concentric groove bodies, the lower part of the biological felt bin is provided with a first overflow fence in the circumferential direction, and the upper part of the biological felt bin is provided with a second overflow fence in the circumferential direction. The floating type biofilter is also provided with floating material, so the floating type biofilter can float on the water surface. The inside of the water lifting pipe is provided with aeration sandstone, the pond water is pushed by high-pressure gas to enter the lower end of the water lifting pipe and pass through the aeration sandstone, and then the pond water is sprayed out of the upper end of the water lifting pipe, and flows into the biological felt bin.

Description

technical field [0001] The invention relates to a biological filter, in particular to a floating biological filter used in a culture pond. Background technique [0002] In the existing aquaculture production, the use of mechanical equipment in the aquaculture water body mainly considers mechanical oxygenation and physical water quality control. The main problems are: 1. In order to control the water quality of the aquaculture water and pursue high yield, the production units blindly increase the number and power of aeration machines, resulting in an increase in energy consumption in aquaculture production; The accumulation of state nitrogen and the effective removal of three-state nitrogen are mainly solved by changing water, resulting in the extensive use of water resources and the pollution of external source water environment by aquaculture discharge water. Contents of the invention [0003] The technical problem to be solved in the present invention is: the removal of...

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Problems solved by technology

[0003] The technical problem to be solved in the present invention is: the removal of tri-state nitrogen in existing aquaculture ponds is relatively difficult, and the accumulation of tri-state nitrogen in the pond is generally solved by changing water, thereby causing a large amount of water resources to be used and a large amount of aquaculture water to be discharged , resulting in pollution of the external source water environment

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