Swirling flow type screen filtering system and filtering method of swirling flow type screen filtering system

Abstract

The invention discloses a swirling flow type screen filtering device which comprises a first water storage tank, a filtering screen, a waste collecting screen, a waste collecting pipe, a waste discharging pipe and a concentration bag. The filtering screen is located on the upper portion of the waste collecting screen, the two ends of the waste collecting pipe are communicated with the waste collecting screen and the waste discharging pipe respectively, the other end of the waste discharging pipe is communicated with the concentration bag, the filtering screen, the waste collecting screen, the waste collecting pipe and the waste discharging pipe are located inside the first water storage tank, the concentration bag is located outside the first water storage tank, an aerating device is arranged at the bottom of the waste collecting screen, and a first water outlet pipe is arranged on the lower portion of the first water storage tank. The invention further discloses a swirling flow type screen filtering system and a method of the swirling flow type screen filtering system for filtering waste water. The circulating water industrial aquaculture technology of the swirling flow type screen filtering device is not dependent on an imported and high-price drum micro-filtering machine any more, the shortcomings that an industrial aquaculture system is high in investment cost and energy dissipation, wastes water and the like are overcome, and the investment cost and the operation cost are reduced by more than 20% and 15% respectively.

Description

technical field

[0001] The invention relates to the technical field of aquaculture, in particular to a swirling screen filter system and a filter method thereof. Background technique

[0002] China is the world's largest aquaculture country and importer and exporter, and its aquaculture production accounts for more than 70% of the world's total aquaculture production. However, the main farming method in China is traditional pond farming. The rapid development of the farming industry has also brought problems of overdraft of water resources and environmental pollution. Establishing and developing an environmentally friendly, high-yield, efficient, and healthy modern factory farming model that suits China's national conditions is a key measure to promote the technological transformation of China's aquaculture industry and build a world-class aquatic power.

[0003] my country's industrialized farming started relatively late, and the current overall development level is still ...

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