河蟹人工育苗池水循环净化处理技术研究  

A study on techniques in water treatment of nursery pond for Chinese mitten-handed crab (Eriocheir sinensis H.) by circulation and purification

作　　者：张明[1] 史家樑[1] 徐亚同[1] 

机构地区：[1]华东师范大学环境科学系,上海200062

出　　处：《淡水渔业》2003年第1期3-7,共5页Freshwater Fisheries

基　　金：上海市科技兴农重点攻关项目 (农科攻字 (98)第 04-5号 )的一部分

摘　　要：采取在养殖池内投放和接触氧化水循环处理装置内接种挂膜光合细菌、硝化细菌和放线菌等环境有益微生物 ,并与微藻、光合细菌等活饵料应用技术相结合的池水净化循环处理技术 ,通过基础试验和生产性试验进行了研究考察 ,结果表明本方法可使育苗池水循环利用 ,降低生产成本 ,减少对周边水环境的污染。试验苗池溶解氧 (DO)高于 7 5mg/L ,氨氮低于 0 5mg/L ,水质明显优于对照苗池 ,符合河蟹育苗要求。试验苗池蟹苗总成活率 19 4 % ,产量 175 8g/m3 ,蟹苗成活率。In order to seek the solution for water purification and reduce the quantity of water used in the nursery pond of Chinese mitten-handed crab, one kind of water treatment and recycle technology is provided in this paper. In the technology designed according to the theory of eco-cultivation, photosynthetic bacteria, nitrifying bacteria and actinomycetes are used as predominant strains in rearing pond and inoculated in bio-contact oxidization reactor, and the application technology of live bait (microalgae and photosynthetic bacteria, etc) is combined. Some basic experiments and mud crab artificial propagation production experiments were made. The results showed that the combined biotechnology could reuse the pond water by circulation and improve the water quality, reduce production cost and pollution of the water environment. The dissolved oxygen contents in the experimental pond water can be maintained about 7 5mg/L and the NH 4 +-N contents can be maintained below in less than 0 5mg/L. The water quality of the experimental pond was obviously better than that of pond. The total survival rate of megalops was 19 4% and the yield was 175 8g/m 3 in the experimental pond. The survival rate, yield and quality of megalops from the experimental pond was much better than those from the control pond. Good economic returns and environmental benefits were gained.

关 键 词：河蟹 人工育苗池 水循环 净化处理技术 废水处理 水质工程 

分 类 号：S966.16[农业科学—水产养殖] S959[农业科学—水产科学]