单建军，宋奔奔，庄保陆，张宇雷，陈 翔，吴 凡
(农业部渔业装备与工程技术重点实验室，十大网投正规信誉官网 上海200092)

摘要：机械气浮机通过产生大量丰富细密的雾化气泡，微气泡在垂直上升过程中将水中的悬浮物质粘附去除。通过测定泡沫分离器前后水质指标的变化情况，研究机械气浮装置在半咸水循环水养殖系统中的水质净化效果。结果表明，以机械气浮装置作为主要物理过滤水处理环节，并与鱼池双排水技术结合，在半咸水工况下可以承担主要的物理过滤功能，其总悬浮物（TSS）、化学耗氧量（COD）、总氮（TN）、总磷（TP）和色度的平均去除率分别可达（37.19±12.04） %、（21.89±6.19 ）%、（30.56 ±3.62）%、（19.38±5.27） %和（18.66± 5.56）%。通过淡水鱼咸水化与泡沫分离技术的有机结合，可有效解决淡水鱼封闭循环水养殖中微小颗粒悬浮物的技术难题，是一种行之有效的方法。

关键词：泡沫分离法；机械气浮；循环水养殖；水质净化

Water purification effect of foam fraction method in a brackish recirculating aquaculture system
SHAN Jianjun, SONG Benben, ZHUANG Baolu, ZHANG Yulei, CHEN Xiang，WU Fan
（Key Laboratory of fishery Equipment and Engineering, Ministry of Agriculture; Fishery Machinery and Instrument Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200092, China）

Abstract：With the rapid development of recirculating aquaculture system (RAS) technology, foam fractionation (also called air stripping) was used widely in sea water aquaculture water treatment, but in fresh water rarely, because of salinity. The changing of water quality for foam fractionation inlet and outlet was measured to study the water purification effect of mechanical air flotation foam fractionation methodology in a brackish RAS. The study results showed that, the combination of mechanical air flotation foam fractionation and dual-drain designing technology could undertake the main physical filtration task in a brackish RAS. The removal efficiencies of TSS, COD, TN, TP and color in mechanical air flotation could reach (37.19±12.04)%, (21.89±6.19) %, (30.56 ±3.62)%, (19.38±5.27) % and (18.66± 5.56 )% respectively. Integration of freshwater fish cultured in brackish water and foam fractionation technology is a practical and novel way to resolve the technical problem of removing micro suspended solids in fresh-water RAS.

Key words：foam fraction method; mechanical air flotation; recirculating aquaculture system; water purification

（来源：《渔业现代化》2013,40(3):1-4,24）