A low-energy recirculating aquaculture system

By designing a low-energy recirculating aquaculture system that integrates manure separation, biochemical filtration, and fluidized bed filtration, the problems of water pollution and water waste have been solved, achieving efficient water quality maintenance and energy conservation.

CN224419784UActive Publication Date: 2026-06-30HANGZHOU MADOU BIOTECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HANGZHOU MADOU BIOTECHNOLOGY CO LTD
Filing Date
2025-07-25
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Traditional aquaculture suffers from water pollution and water waste, making it difficult to effectively remove pollutants from the water, which affects the health and growth of aquatic animals. Furthermore, the filtration equipment is inefficient and cannot meet the needs of large-scale, high-density aquaculture.

Method used

Design a low-energy recirculating aquaculture device, including an aquaculture pond with a manure separation structure, a filter pond and a biological fluidized filter pond. It adopts suspended biological filter bags and biological filter media to integrate manure separation, biological filtration, physical filtration and fluidized filtration. Water is transported through a deluge pipe for multi-stage filtration to reduce energy consumption.

Benefits of technology

It enables rapid and efficient removal of water pollutants within a limited space, maintaining water quality, reducing water waste, improving purification efficiency, and reducing energy consumption.

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Abstract

This invention provides a low-energy recirculating aquaculture system, comprising an aquaculture pond with a wastewater separation structure, a filtration pond for treating water from the aquaculture pond, and a biological fluidized bed filtration pond for treating water from the filtration pond that is returned to the aquaculture pond. A first discharge outlet is formed at the bottom of the aquaculture pond. The filtration pond includes several suspended biological filter bags for treating the incoming water and a supporting filter plate located at the water inlet. Each biological filter bag includes a biological filter bag body for physical filtration and biological filter media filled within the biological filter bag body. The biological filter bags are suspended at the corresponding positions of the filter holes on the supporting filter plate. This low-energy recirculating aquaculture system integrates wastewater separation, biological filtration, physical filtration, and fluidized bed filtration, achieving rapid and efficient removal of various pollutants from water within a limited space, maintaining water quality, and reducing water waste.
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