为设计构建一套半封闭循环水大菱鲆(Scophthalmus maximus)养殖系统,通过向低压喷淋式溶氧器添加一定量的臭氧,探讨臭氧对水质的改善作用.试验结果表明,添加臭氧后,系统能有效及时去除悬浮物,去除率约59％,将系统总悬浮物浓度基本控制在8 mg/L以下；能提高系统的增氧能力,平均每个循环可增加溶解氧约8.38 mg/L；通过向低压喷淋式溶氧器添加0.26 mg/L的臭氧,总氨氮去除率约为18％,亚硝酸盐氮去除率约为8％,杀菌率约为94％.在海水循环水养殖系统中,臭氧不但杀菌效果显著,而且对去除系统总悬浮物、总氨氮和亚硝酸盐氮效果良好.%Ozone can sterilize, oxidize, remove algal and improve water quality, and is widely used in kinds of waste water treatment. But there' s limited knowledge about the application of ozone in marine aquaculture. The effect of ozone on water quality in partial-reused aquaculture system for turbot (Scophthalmus maximus ) is studied by adding ozone to aquaculture system at the concentration of 0. 26 mg/L. The treatment group results showed that; total suspended solids can be effectively removed at 59% , and it keeps total suspended solids in the range of 8 mg/L, can effectively increase the concentration of dissolved oxygen of 8. 38 mg/L each cycle. In treatment group, 18% ammonia nitrogen, 8% nitrite nitrogen, 94% heterotrophic bacteria can be removed. The application of ozone to marine aquaculture system can significantly improve water quality, and will be widely extended in aquaculture waste water treatment.
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