Outdoor recirculating aquaculture system

Abstract

The invention relates to an outdoor recirculating aquaculture system. The outdoor recirculating aquaculture system comprises a plastic greenhouse. A culture pond is arranged in the plastic greenhouse and connected with a water collection well through an underground pipeline, the water collection well is connected with a first-stage physical sedimentation pond, the first-stage physical sedimentation pond is connected with a second-stage fence filtration pond, a plurality of filtration plates are arranged in the second-stage fence filtration pond in an inclined mode, the second-stage fence filtration pond is connected with a first-stage bacteria filter, the first-stage bacteria filter is connected with a second-stage bacteria filter, the second-stage bacteria filter is connected to a clean water pond, and the clean water pond is connected to the culture pond. Culture water in the culture pond is purified through the first-stage physical sedimentation pond, the second-stage fence filtration pond, the first-stage bacteria filter and the second-stage bacteria filter in sequence, clean water is obtained finally, new culture water is supplied to the culture pond, and therefore the outdoor recirculating aquaculture system can utilize resources fully in a circulating mode and reduce environment pollution. In addition, due to the fact that the culture pond is arranged in the outdoor plastic greenhouse, the functions of heat preservation and temperature control are achieved, and the building cost of the outdoor recirculating aquaculture system is lowered.

Description

technical field [0001] The invention relates to an outdoor circulating aquaculture system. Background technique [0002] The nutrients input by farming cannot be fully utilized by fish. As the degree of intensification increases, wastes such as ammonia nitrogen, nitrite, suspended solids, dissolved organic matter and carbon dioxide are produced in large quantities in water bodies. Under the traditional breeding mode, these wastes accumulate in the breeding water without treatment, or are directly discharged, leading to problems such as fish poisoning, eutrophication and food safety, and directly restricting the development of the scale of farming. Recirculating aquaculture is to treat the aquaculture water through the water treatment system, and control the ammonia nitrogen, suspended solids, dissolved organic matter, carbon dioxide and other metabolic wastes produced in the aquaculture process and then re-enter the aquaculture system to achieve the recycling of aquaculture...

AI Technical Summary

Problems solved by technology

[0003] At present, there are two main types of recirculating aquaculture systems in my country, one is an upgrade of the traditional flowing water aquaculture system, which has a simpler structure and lower cost, but its breeding density and circulation effect are relatively poor; the other has relatively complete Water treatment facilities have good water treatment capacity, but most of them are indoor systems, with high construction costs, high operating costs, and high requirements for management levels

It has high requirements for the required funds, venues and personnel, which is not in line with our current aquaculture status quo

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