The method of using the waste water from the sea cucumber nursery pond in winter to promote the ripening of sea cucumbers

Abstract

The invention provides a method for accelerating maturing of stichopus japonicas parents through waste water in a stichopus japonicas breeding pond in winter. The specific technical method comprises the steps that the waste water in a breeding workshop is collected, filtration, purification and sterilization are conducted, and water for accelerating maturing of the stichopus japonicas parents is obtained; the stichopus japonicas parents are accumulated, open sea water with natural water temperature is used for accumulation at the initial stage, the water for accelerating maturing of the stichopus japonicas parents is introduced gradually at the middle stage, and accumulation lasts for 60-90 days; after accumulation is over, expectant time is determined, heated open sea water is introduced, the water temperature is raised to 18 DEG C step by step, antenatal activities of the stichopus japonicas parents are observed, spawning and hatching time of the stichopus japonicas parents is judged, and feeding of bait is stopped in advance; the stichopus japonicas parents spawn and hatch, and maturing of the stichopus japonicas parents is accelerated through the waste water in the stichopus japonicas breeding pond in winter. The method is simple and effective; the waste water cannot do harm to breeding of the stichopus japonicas parents after being treated, water purification cost and monitoring cost are reduced, heat energy of the breeding waste water is effectively utilized, the utilization rate of water resources is increased, cost for accelerating maturing of the stichopus japonicas parents is lowered, and an energy-saving, consumption-reducing and emission-reducing efficient comprehensive breeding mode is achieved in a true sense.

Description

technical field [0001] The invention relates to the technical field of recovery and utilization of japonicus culturing wastewater, in particular to a method for artificially indoor ripening of japonicus japonicus by using the treated wastewater discharged from japonicus seedling ponds in winter. Background technique [0002] In winter, the northern sea cucumber seedling stage needs to be heated and the heated seawater should be replaced regularly to ensure that the water quality and temperature in the nursery pond meet the standards for aquaculture water. The average daily amount of wastewater discharged from sea cucumber nursery ponds in winter accounts for 5% to 10% of the total seedling water body, and the temperature is 13 to 15 °C. Contains four main elements: carbon, nitrogen, phosphorus and sulfur. Usually, this part of waste water is directly discharged into the sea without treatment. On the one hand, it causes certain harm to the water environment of the outer sea,...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for treating and reusing wastewater from japonicus nursery ponds in winter, so as to solve the current problems of wastewater discharge in winter polluting the environment and wasting heat.