A system and method for automated high-density cultivation of rotifers

Abstract

The invention belongs to the field of aquaculture engineering and particularly provides an automatic high-density cultivation system and method for rotifers. The system mainly comprises a source water treater, an ultrasonic sterilizer, an aquaculture tank, a microfiltration device, a water storage tank, an oxygen generator, an air pump, a booster pump, water level sensors, an electronic controller and the like. The method comprises steps as follows: when the system starts a water changing process automatically or manually, water enters the microfiltration device through solenoid valves and an air-lift pipe in sequence, meanwhile, the water level sensors are triggered, a drive motor, a back washing pump and the air pump are started, the rotifers and resting eggs are filtered by the microfiltration device and then flow back to the aquaculture tank, aquaculture wastewater containing excrement waste is discharged into a drain tank and flows out of the system through an overflow port after secondary filtration, when water level in the aquaculture tank is reduced to cause re-triggering of the water level sensors, the solenoid valves are closed to stop water discharge, a water supplementing program is started until the water level returns to normal, and the process enters a next countdown cultivation period. Key parameters of the system can be set manually, and automatic high-density cultivation of the rotifers can be realized.

Description

technical field [0001] The invention belongs to the field of aquaculture engineering, in particular to an automatic high-density cultivation system and method for rotifers. Background technique [0002] my country is the world's largest aquaculture country, and there is a huge demand for fish, shrimp, and crab seedlings. Rotifer is an indispensable live bait for the cultivation of various fish and crustacean seedlings, and has a huge market demand. Currently, rotifers are cultivated in seawater and freshwater. Large-scale cultivation of seawater rotifers mainly relies on traditional methods using outdoor earthen ponds or cement ponds. Although it has a higher total output and lower production costs, it occupies a large area of ​​land and has a low culture density of rotifers (only about 20-50 rotifers) / ml), and is severely restricted by factors such as seasons, climate changes, predators, and pathogen pollution, it is impossible to supply fresh and live rotifers throughou...

AI Technical Summary

Problems solved by technology

However, the culture facilities or systems involved in the above-mentioned rotifer culture technology still generally have the defects of low degree of automation, high operating cost, and poor stability. There is a big shortage, so it is rarely promoted and applied in actual production

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