Pollutant collecting-and-discharging system for pond internal-circulation aquaculture

Abstract

The invention relates to a pollutant collecting-and-discharging system for pond internal-circulation aquaculture. The pollutant collecting-and-discharging system comprises a big-end-up trapezoidal pollutant collecting groove (11) formed in the portion, close to the back portion of a breeding area (4), in the bottom of a pollutant collecting area (5), a turbidity monitor (13) is arranged at the portion, close to an outlet side of the pollutant collecting area (5), of the pollutant collecting groove (11), and the height of the water outlet side of the pollutant collecting area (5) is coincidentwith the height of the bottom face of the breeding area (4); a punching pollutant discharging pipe (7) is arranged at the bottom of the pollutant collecting groove (11), one end of the punching pollutant discharging pipe (7) is closed, and the other end of the punching pollutant discharging pipe (7) is connected into a pollutant discharging pipe (8); pollutants in a breeding water body are precipitated in the pollutant collecting groove (11) and discharged through the punching pollutant discharging pipe (7) and the pollutant discharging pipe (8). Construction is easy, movable equipment is notarranged, the sedimentation effect of fish manure and residual feed can be enhanced, residence time of the fish manure in the breeding water body is shortened, real-time monitoring is carried out through the turbidity monitor (13), collecting and discharging efficiency of the pollutant are improved, cleaning of the breeding water body is guaranteed, and the management difficulty and the working amount of equipment maintenance are effectively reduced.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a sewage collection and discharge system for circulating aquaculture in ponds. Background technique [0002] Recirculating aquaculture technology in ponds has been introduced from abroad in recent years. Because its economic benefits and environmental ecological benefits have been significantly improved compared with traditional aquaculture models, it has been promoted very quickly in China. [0003] figure 1 It is a vertical section view of the main part of the existing pond recirculating aquaculture mode that has been implemented in many places. The fish pond is separated by a side wall 1, and several aquaculture tanks with a total length of about 27 meters and a width of about 5 meters are formed in the pond. The area of ​​the breeding tank accounts for about 3% to 5% of the total area of ​​the large pond. The water flow in the big pond passes through the airlift pushing...

AI Technical Summary

Problems solved by technology

The outlet of the sewage suction pump moves with the pump body, and the sewage discharge tank can only be set as an open type, which is not conducive to environmental sanitation

Large-scale farms have many breeding tanks and must be equipped with multiple sewage suction pumps. The investment is large, the management is difficult, and the equipment maintenance workload is heavy.

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