Microbial purification facility and method for water quality of intensive culture system of pond

Abstract

The invention relates to a microbial purification facility and a method for the water quality of an intensive culture system of a pond. The facility comprises an aeration filter tank, a non-aeration filter tank, a water quantity regulating valve and all connecting water pipes. Corallite, filtering cotton and bamboo joints are filled in the aeration filter tank, and the bottom in the tank is provided with radial water outlet pipes; and the non-aeration biological filter tank is an earth ditch the surface of which is covered with a plastic membrane, and a filtering material is filtering cotton which is hung transversely. In the invention, the quantity of water entering the aeration filter tank is regulated according to the mature condition of a biomembrane of the aeration filter tank and the pollution degree of the wastewater of a culture pond; nutritive salt concentrate is added into a filling opening of nutritive salt, and the optimal proportion of C:N:P of influent water is kept; beneficial bacteria attached to the filtering material of the aeration filter tank can decompose and transform injurants generated in the culture process; and then, EM bacteria and native bacteria lost in the aeration filter tank are fully utilized by the non-aeration filter tank, and the injurants are continuously decomposed and transformed. The invention has high purification efficiency, low cost and convenient material taking and processing and can be widely applied to the purification of the water quality of the intensive culture of ponds for briny and fresh water fishes, shrimps and crabs.

Description

technical field [0001] The invention belongs to biological purification technology, and in particular relates to a microbial purification facility and method for water quality in a pond intensive cultivation system. Background technique [0002] With the improvement of aquaculture intensification, the water consumption for aquaculture is increasing year by year. The discharge of a large amount of aquaculture wastewater during the aquaculture process not only causes the depletion of water resources and increases the cost of power, but also causes the surrounding environment to be polluted, the quality of aquaculture water to decline, and the aquaculture organisms to be polluted. Therefore, the purification treatment and recycling of aquaculture wastewater has become a necessary link in the development of intensive aquaculture. In recent years, many new technologies and invention patents on the treatment of aquaculture wastewater have also appeared. These technologies general...

AI Technical Summary

Problems solved by technology

However, the above-mentioned technologies generally have the following defects: most of them are suitable for the treatment of industrialized indoor aquaculture wastewater, with single fillers, special microbial strains, expensive equipment, high operating costs, and poor treatment effects, etc.

At present, there are no reports or patents on microbial purification facilities and methods suitable for high-density intensive cultivation systems in outdoor ponds, with good treatment effects and low cost.

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