A device and method for continuously concentrating and discharging prawn farming

Abstract

The invention discloses a prawn culture device and method for continuous concentrated sewage discharge, comprising a high-level culture pond with a sewage outlet at the bottom, characterized in that at least one water wheel is arranged on the water surface of the high-level culture pond, and at least one water wheel is arranged longitudinally in the high-level culture pond The air lift sewage device, the air lift sewage device includes an air lift pipe connected to the sewage outlet, at least one nano aeration tube connected to the pressure air pipe is arranged in the air lift pipe, and an electromagnetic air valve is arranged on the pressure air pipe; The bottom side of the pipe is provided with a water inlet hole, and the lower part of the airlift pipe is provided with a movable sleeve. The inner wall of the movable sleeve is fixed with at least one U-shaped filter screen for intercepting solid particle residues. The sewage outlet is connected with an electromagnetic filter. The sewage pipe of the sewage valve row, the electromagnetic air valve and the electromagnetic sewage valve are respectively electrically connected to the automatic water level controller. The advantage is that the sewage interception concentration and continuous automatic sewage discharge can be realized during the breeding process, and the dead water area at the sewage outlet of the high-level pool can be eliminated and improved.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a prawn cultivation device and method for continuously concentrating and discharging sewage. Background technique [0002] Penaeus vannamei is one of the important aquaculture species in China, occupies an important position in the fishery economy, and has made important contributions to increasing the efficiency of fisheries and increasing the income of fishermen. The current high-density culture of prawns can be divided into industrial recirculating aquaculture mode and high-level pond culture mode, and the high-level pond culture mode is the main mode. The industrial circulating aquaculture mode is to purify the water in the aquaculture pond outside the pond and recycle it; the water in the aquaculture pond generally circulates 5-6 times a day, which requires external water treatment facilities and equipment, and the infrastructure investment and operating cost...

AI Technical Summary

Problems solved by technology

At present, there are also improvements to the sewage discharge method of prawn farming, such as the patent CN201210251885 and the document "Aquaculture System Using Foam Separation Device", which proposes to continuously separate small particles of impurities and proteins through an external air flotation device, but the large ones in the culture pond Granular feces and residual bait still need to be discharged intermittently through traditional sewage discharge methods, which have not fundamentally solved the problem; CN201611106726 proposes an industrialized shrimp farming system and method based on an air-lift cycle, which is essentially an external method of extracting water through an air-lift sewage device. It is difficult to apply to high-level ponds with large water bodies because of a circulating water treatment aquaculture system

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