Zero discharge fish and shrimp polyculture system

Abstract

The invention discloses a zero-discharge fish-shrimp mixed-culturing system. The system is composed of a fish-shrimp mixed-culturing pool (21) and a multifunctional sedimentation pool (22). The fish-shrimp mixed-culturing pool (21) is composed of porous devices (1), mud collecting pipes (2), nanometer aerator pipes (3), feed tables (4), a supporting frame (5), partition nets (6) and first mud collecting wells (7). The multifunctional sedimentation pool (22) is composed of a water collecting tank (9), purifying plants (10), combined packing (11), a first sedimentation pool body (12), a water inlet pipe (13), a first sedimentation slant plate (14), a second sedimentation pool body (15), a water outlet pipe (16), a second mud collecting well (17), a mud discharging pipe (18), a second sedimentation slant plate (19) and a third sedimentation pool body (20). The zero-discharge fish-shrimp mixed-culturing system has the main advantages that the high density cultivation of litopenaeus vannamei is achieved, and cultivation management is facilitated; water purification capacity is high, and the water discharging frequency is low; same-pool mixed culturing of litopenaeus vannamei and carnivorous fishes is achieved.

Description

technical field [0001] The patent of the invention belongs to the technical field of aquaculture and water environment protection, and specifically relates to industrialized circulating aquaculture of Penaeus vannamei, and is especially suitable for industrialized aquaculture of Penaeus vannamei in high-density circulating water in inland areas. Background technique [0002] Penaeus vannamei has delicious meat, high processed meat, and wide temperature range. It can grow at 18-32°C and at a salinity of 1-40‰. It is an excellent desalinated cultured species. Penaeus vannamei grows fast and has strong disease resistance. It has gradually become the main cultured shrimp species in my country. [0003] However, with the expansion of Penaeus vannamei aquaculture scale and the improvement of aquaculture density, problems such as environmental pollution and economic constraints are becoming more and more serious, which greatly restricts the development of aquaculture industry. Esp...

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Problems solved by technology

[0003] However, with the expansion of Penaeus vannamei aquaculture scale and the improvement of aquaculture density, problems such as environmental pollution and economic constraints are becoming more and more serious, which greatly limits the development of aquaculture industry.

Especially in the intensive aquaculture process, a large amount of residual bait and feces are discharged into the aquaculture water body, causing the rapid accumulation of toxic substances such as ammonia nitrogen, resulting in the deterioration of the aquaculture water quality and potential environmental pollution.

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