Pond track-type recirculating fish-culture fecal treatment system and method

Abstract

The invention discloses a pond track-type recirculating fish-culture fecal treatment system, comprising a filter-feeding fish culture pond, at least a fish pond, a residual bait and feces sedimentingtank and at least one biofloc culture tank. A micro-pore pneumatic water-pushing device is arranged at one side of the fish pond and a fish barrier is arranged at the other end; the fish pond is communicated with the filter-feeding fish culture pond through the micro-pore pneumatic water-pushing device, and is communicated with the residual bait and feces sedimenting tank through the fish barrier;the top of the residual bait and feces sedimenting tank is communicated with the filter-feeding fish culture pond, while a suction pump is arranged at the bottom of the residual bait and feces sedimenting tank ; the suction pump is connected with a water inlet pipe, the residual bait and feces sedimenting tank is communicated with one side of the biofloc culture tank through the suction pump andthe water inlet pipe; the other side of the biofloc culture tank is communicated with the filter-feeding fish culture tank through a discharging pipe. According to the system, the residual bait and feces can be collected and cultured into biofloc, which can be used as baits for fish, shrimp and crabs, and thus the circulation of resources is achieved while environmental pollution is avoided and culture cost is reduced.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a pond track-type circulating water fish farming feces treatment system and method. Background technique [0002] China is the world's largest aquaculture country. In 2018, China's total aquaculture output exceeded 50 million tons, and most of the aquaculture (more than 50%) came from pond farming. In recent years, due to the gradual tightening of environmental protection policies, for some Extensive farming methods (such as reservoir and lakeside farming) are restricted, and the proportion of pond farming continues to grow. However, the intensive breeding in ponds has a high density and a large bait coefficient. 70% to 80% of the feed enters the water body. In the traditional pond culture mode, the water in the pond is quite static, and the residual bait and fish and shrimp feces are deposited on the bottom of the pond, while the water in the pond in the pond circulating wa...

AI Technical Summary

Problems solved by technology

At present, two methods are generally used to deal with the collected residual bait, feces and other dirt. One way is to directly discharge the collected residual bait, feces and other dirt, which not only causes environmental pollution, but also causes serious waste of resources. Contains a large amount of fee...

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