CAJ | 학술논문

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。
궤계기부궤통과산생대량봉부세밀적무화기포，미기포재수직상승과정중장수중적현부물질점부거제。통과측정포말분리기전후수질지표적변화정황，연구궤계기부장치재반함수순배수양식계통중적수질정화효과。결과표명，이궤계기부장치작위주요물리과려수처리배절，병여어지쌍배수기술결합，재반함수공황하가이승담주요적물리과려공능，기총현부물（TSS）、화학모양량（COD）、총담（TN）、총린（TP）화색도적평균거제솔분별가체（37．19±12．04）％、（21．89±6．19）％、（30．56±3．62）％、（19．38±5．27）％화（18．66±5．56）％。통과담수어함수화여포말분리기술적유궤결합，가유효해결담수어봉폐순배수양식중미소과립현부물적기술난제，시일충행지유효적방법。
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.