The effects of several in a recirculating water - treatment units aquaculture system
LUO Guo-zhi, TAN Hong-xin, ZHU Xue-bao
Key Laboratory of Aquatic Genetic Resources and Aquacultural Ecosystem Certificated by the Ministry of Agriculture, Shanghai Fisheries University, Shanghai 200090, China
Abstract: The reuse of the water is critical in a recirculating aquaculture. There are several treatment methods such as biofilter, suspended skimmer protein, and hydroponic vegetables channel. The results showed that the removal rates of total ammonia （ TNH3 - N）, nitrite nitrogen （ NO2 - N） by a biofilter lump - sum and chemical oxygen demand （COD） were 44.79% , 20.31% ,and 20. 1%, respectively. With ozone, the rates were 42.45% and 24.71%, respectively; the removal rate ofTNH3 -N, and NO2 -N were 39% and 38.1% for the protein skimmer. Without ozone the hydroponic vegetable had the maximal removal rate of ammonia - N, nitrite - N, nitrate - N, total-N, phosphate-P and COD of 57.46%, 51.72%, 3.7%, 10.67%, 9.72% and 21.78%, respectively. During the experimental period （ 140 days）, the concentration of TNH3 - N in tanks was kept in lower level （ less than 1.5 mg/L） and the concentration of NO2 - N kept at less than 0.8 mg/L.
罗国芝, 谭洪新, 朱学宝. 闭合循环水产养殖车间水处理核心单元的处理效率[J]. 大连海洋大学学报, 2008, 23(1): 68-72.
LUO Guo-zhi, TAN Hong-xin, ZHU Xue-bao. The effects of several in a recirculating water - treatment units aquaculture system. Journal of Dalian Ocean University, 2008, 23(1): 68-72.
2008, Vol. 23 
