基于生物塘处理的不同水交换率对池塘水质及鲫鱼生长的影响  

THE EFFECTS OF WATER EXCHANGE RATES ON WATER QUALITY AND GROWTH PERFORMANCE OF CRUCIAN CARP IN A RECIRCULATING AQUACULTURE SYSTEM

作　　者：李晓莉[1] 张世羊[1] 陶玲[1] 李谷[1] 袁林建 

机构地区：[1]中国水产科学研究院长江水产研究所,湖北武汉430223 [2]启东市海洋与渔业局,江苏启东226241

出　　处：《水处理技术》2012年第12期85-89,共5页Technology of Water Treatment

基　　金：现代农业产业技术体系建设专项资金(NYCYTX-49);国家科技支撑计划(2012BAD25B05)

摘　　要：构建了1套以生物塘为净化设施的循环水养殖系统,各池塘鲫鱼放养密度与规格相同,通过设置不同水交换率(分别为5%、10%、15%)与未循环水的对照试验,探讨了基于此条件下循环水养殖系统结构优化、养殖效果以及净化效率问题。结果表明,生物塘对养殖尾水中氨氮、TN、TP、PO43--P、BOD5、CODMn、和Chl-a的去除率分别达到20.8%、10.8%、27.1%、26.7%、31.3%、19.2%和37.7%,水质相对稳定,养殖尾水经生物塘处理后基本满足渔业用水要求,鱼体增重、养殖效益高于对照组。试验期间系统实现了污水0排放。A set of biological pond which was took as purification facilities recireulating aquaculture system was built, the carp stocking density and the specifications of the pond were same, controlled trial by setting different water exchange rates （5%, 10%, 15%） and non circulating water to explore the recirculating aquaculture system structure optimization based on this condition, breeding effects as well as the purification efficiency. The results showed that by the treatment of the biological pond, 20.8% of the ammonia nitrogen, 10.8% of the total nitrogen, 27.1% of the total phosphorus, 26.7% of the phosphate, 31.3% of the five-day biochemical oxygen demand （BODs）, 19.2% of the chemical oxygen demand （CODe,,）, 37.7% of the chlorophyll a were removed. Water quality a^er treatment by the biological pond met the requirement for aquaculture usage, and fish growth rates and benefit of the test groups were significantly higher than the control group; the system achieved zero discharge during the whole culture period.

关 键 词：生物塘 循环水养殖系统 水交换率 异育银鲫 

分 类 号：X703.1[环境科学与工程—环境工程]