Ecological totally-enclosed circulating mariculture system

Abstract

The invention discloses an ecological totally-enclosed circulating mariculture system which comprises a fish culture pond, a purification pond and a circulating unit. The fish culture pond has an area of 25-30 m<2> and water depth of 1.0-1.5 m; red sea bream is cultured in the fish culture pond; the putting density of the red sea bream is 10-20/m <3>; and the body length of the red sea bream is 12.0 +/-3.0 cm, and the weight of the red sea bream is 56.4 +/-25.0 g. Sesuvium portulacastrum is cultured in the purification pond, the specification of the purification pond is (3.5-4.5)m * (5.5-6.5)m, the water depth of the purification pond is 0.5-1.0 m, the purification pond is divided into 3-4 water channels at equal intervals, the water channels are connected in series end to end, and water flow bypasses the water channels in an S shape; and the density of the sesuvium portulacastrum is 20-30 plants/m<2>, the sesuvium portulacastrum plants are 35.9 +/-15.0 cm, and the average wet weight is 212.6 +/-100.0 g/plant. The circulating unit is used for enabling water in the fish culture pond to flow into the purification pond and enabling water in the purification pond to flow into the fish culture pond; and the culture water is circulated for 5-10 times every day between the fish culture pond and the purification pond. A breeding-planting-water quality purification three-in-one ecological culture system is constructed, and a benign composite ecological circulation system which can recycle energy and is stable in structure is formed.

Description

technical field [0001] The invention relates to an ecological fully-closed circulation marine aquaculture system. Background technique [0002] In recent years, mariculture has become a pillar industry of the marine economy in my country's coastal provinces (regions). With the increase in the scale and intensity of aquaculture, the environmental problems caused by aquaculture have become increasingly prominent. The industrialized recirculating mariculture system actively controls the water environment by means of industrialization, and transforms the aquaculture wastewater into reusable aquaculture water, which meets the strategic needs of circular economy, energy saving and emission reduction, and is internationally recognized as the development direction of the modern aquaculture industry. However, at present, high-cost and high-energy-consuming technologies such as protein separation, ozone oxidation, and ultraviolet sterilization are commonly used in recirculating maricu...

AI Technical Summary

Problems solved by technology

[0003] Due to the salinity effect of seawater and the differences in the structure of pollutants in aquaculture wastewater and common land-based wastewater, there are currently few proprietary technologies for mariculture water treatment

[0004] The existing "fish and vegetable symbiosis t

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