影响海水养殖系统中泡沫分离器效果的因素

The Factors Influencing Application of Foam Fraction Technology in Recirculating Aquaculture System(RAS)

工厂化循环水养殖系统得到越来越广的应用,去除水体中有机物的重要性逐渐得到人们的重视,但去除有机物的主要设备———泡沫分离器在技术应用上还不成熟,本文通过实验逐步改变充气量、水流量、有机物浓度、分离器高度等影响因素,以确定这些影响因素对泡沫分离器有机物去除效率的影响,研究结果表明:(1)由于气流紊动的影响存在最佳气液比,本实验中气液比为6时有机物去除率最大。(2)有机物浓度是影响有机物去除效率的主要因素,本实验中当有机物浓度在4.32mg/l时去除率明显增大。(3)分离器高度对去除率的影响是随着有机物浓度等因素的变化而不同。

With the application of RAS in aquatic engineering, the foam separation system has been valued as its one part because of its efficiency in elimination of organic matter in water . In fact , this technology applied in RAS is not completed enough to satisfy us. This paper researches on it through experiment to get the knowledge of some factors taking. Effects of organic matter concentration in water, height ganic matter removal efficiency were studied in recirculating of foam separator, and changes in water flow/air ratio on oraquaculture system. The results showed that there was optimal water flow/air ratio of 6. The maximal removal efficiency was observed at organic matter concentration of 4.32 mg/ L. The effect of the separator height on the organic matter removal efficiency varied with the organic matter concentration.