生物絮凝技术处理水产养殖用水效果的初步研究  

Bio-flocs technology application in aquacultural water treatment

作　　者：鲁璐[1] 罗国芝[1] 谭洪新[1] 孙大川[1] 

机构地区：[1]上海海洋大学水产与生命学院,上海201306

出　　处：《渔业现代化》2010年第6期6-10,14,共6页Fishery Modernization

基　　金：上海市教委科研(创新)项目(11YZ150)

摘　　要：在水产养殖中应用生物絮凝技术（BFT）,可以将养殖过程中产生的残饵和粪便转化为可被部分养殖对象重新摄食的絮体饵料,而且在絮凝体形成过程中对水体氨氮等物质的去除有明显作用。试验在自建的生物絮凝反应器中分别接种活性污泥和枯草芽胞杆菌（Bacillus subtilis）,研究絮凝体形成过程中主要水质指标的变化情况。结果表明：接种活性污泥的装置中,氨氮、亚硝酸盐氮的去除率分别为72.25%、94.04%;接种枯草芽孢杆菌的装置中,氨氮、亚硝酸盐氮的去除率分别为81.53%、97.89%;同时接种活性污泥和枯草芽孢杆菌的装置中,氨氮、亚硝酸盐氮的去除率分别为40.85%、63.19%;对照装置中不接种任何物质,氨氮、亚硝酸盐氮的去除率分别为11.41%、70.56%。分别接种活性污泥和枯草芽孢杆菌的装置在去除氨氮、亚硝酸盐氮方面较好。试验装置中所形成的絮体颗粒直径在0.1~1.0 mm,粒径大小适合作为部分养殖鱼类稚鱼期的开口饵料。BFT is based on the assimilation of inorganic nitrogen species（ammonia,nitrite and nitrate） by the microbial community present within the water,offers the advantages of lower impact on the environment due to lower external water requirements,the removal of toxic inorganic nitrogen species and the production of additional feed for the culture species.This study investigated the removal efficiency of treatment on ammonia and nitrite on bio-flocs in the BFT reactor,comparing activated sludge inoculation with Bacillus subtilis inoculation.The results showed that the removal efficiency of ammonia and nitrite were 72.25% and 94.04% in the BFT reactor inoculated with activated sludge,the removal efficiency of ammonia and nitrite were 81.53% and 97.89% in the BFT reactor inoculated with Bacillus subtilis.The removal efficiency of ammonia and nitrite were 40.85% and 63.19% in the BFT reactor inoculated with activated sludge and Bacillus subtilis.The removal efficiency of ammonia and nitrite were 11.41% and 70.56% in the control.The diameter of flocs ranged between 0.1 mm and 1.0 mm,and the flocs can be used as fish larvae fed.

关 键 词：生物絮凝 固体颗粒物 水产养殖 水质净化 

分 类 号：S969.38[农业科学—水产养殖]