Large-scale factory aquaculture,aquaculture tail water directly discharged,there are certain ecological and environmental risks.Shanghang Yongxin Aquaculture Co.,Ltd.is an Anguilla japonica factory culture with a farming area of 16,000 m2.By strengthening the management of aquaculture water quality,the discharge reaches the second level of the Requirements for the Discharge of Aquaculture Water from Freshwater Ponds after the tail water of the aquaculture is purifiied through physical filtration,sedimentation,microbial degradation,aeration,planting of aquatic plants and placing of filter-feeding fishes.Practice has proved that it is effective and feasible to adopt biological tail water treatment mode.
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