南美白对虾“四池一罐”养殖尾水处理模式示范点案例分析

A case study on the “four ponds and one tank”mariculture wastewater treatment mode for Penaeus vannamei

为推动对虾养殖产业绿色健康发展,以福建省霞浦县南美白对虾工厂化养殖模式为例,介绍了“四池一罐”尾水处理技术。结果表明,养殖尾水经过物理沉淀、砂滤过滤、曝气、生物处理等处理后,悬浮物、COD、总氮、总磷等指标明显下降,尾水处理效果较好,可达标排放或回收再利用。此外,该尾水处理模式便于维护,还可在春冬季节回收部分余热,节约养殖成本。

In order to promote the green and healthy development of shrimp farming industry,the“four ponds and one tank”wastewater treatment technology was introduced,using the industrial culture mode of Penaeus vannamei in Xiapu County,Fujian Province as a case study.The results showed that,the wastewater was treated by physic sedimentation,filtration,aeration and biological cleansing,the quotas,such as suspended solids,COD,TN and TP,were declining obviously,reaching an incredible treatment result.The treated wastewater can be discharged legally or recycled.In addition,this wastewater treatment mode was easy to maintain and can reuse part of superficial heat,which can save the cost of cultivation.