循环水养殖旋转式生物流化床生物过滤功能

生物过滤是循环水养殖水处理的关键,生物过滤功能启动以及操作条件直接影响到生物过滤的效果。该文以实验室规模旋转式生物流化床为研究对象,采用自然挂膜法研究海水和淡水生物过滤功能的启动;设置了3个膨胀率50%、75%、100%和4个C/N0、0.5、1.0、2.0,研究其对旋转式生物流化床处理养殖污水效率的影响。结果表明：1）以氨氮和亚硝态氮浓度降低并稳定为判断标准,淡水和海水系统旋转式生物流化床生物过滤功能启动完成分别需要47和60 d;2）污水处理效率随膨胀率增大而提高,该研究膨胀率为100%时处理效率最高,总氨氮转换率高达881 g/（m3·d）;3）C/N增大,抑制生物膜的硝化功能,污水处理...

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Bibliographic Details
Published in	农业工程学报 Vol. 31; no. 3; pp. 249 - 254
Main Author	柳瑶宋协法雷霁霖彭磊黄志涛刘宝良
Format	Journal Article
Language	Chinese
Published	中国海洋大学水产学院，青岛 266003 2015 中国水产科学研究院黄海水产研究所，青岛 266071%中国海洋大学水产学院,青岛,266003%中国水产科学研究院黄海水产研究所,青岛,266071
Subjects	C/N 旋转式生物流化床水产养殖海水生物过滤生物过滤功能启动膨胀率 C/N 旋转式生物流化床生物过滤功能启动水产养殖海水 aquaculture bed expansion seawater cyclo-bio fluidized sand beds 膨胀率生物过滤 biofiltration starting
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ISSN	1002-6819
DOI	10.3969/j.issn.1002-6819.2015.03.033

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Summary:	生物过滤是循环水养殖水处理的关键,生物过滤功能启动以及操作条件直接影响到生物过滤的效果。该文以实验室规模旋转式生物流化床为研究对象,采用自然挂膜法研究海水和淡水生物过滤功能的启动;设置了3个膨胀率50%、75%、100%和4个C/N0、0.5、1.0、2.0,研究其对旋转式生物流化床处理养殖污水效率的影响。结果表明：1）以氨氮和亚硝态氮浓度降低并稳定为判断标准,淡水和海水系统旋转式生物流化床生物过滤功能启动完成分别需要47和60 d;2）污水处理效率随膨胀率增大而提高,该研究膨胀率为100%时处理效率最高,总氨氮转换率高达881 g/（m3·d）;3）C/N增大,抑制生物膜的硝化功能,污水处理效果变差,C/N大于2.0时污水处理效果显著变差。该研究可为旋转式生物流化床在应用过程中生物过滤功能的启动和日常操作管理提供技术指导。
Bibliography:	Liu Yao, Song Xiefa, Lei Jilin, Peng Lei, Huang Zhitao, Liu Baoliang （1, College of Fisheries, Ocean University of China, Qingdao 266003, China; 2. Yellow Sea Fisheries Research Institute, China Academy of Fishery Sciences, Qingdao 266071, China） 11-2047/S A lab-scale cyclobio fluidized sand biofilter was designed to study biofiltration in recirculating aquaculture systems. First, the biofiltration start was studied separately in fresh water and seawater recirculating aquaculture systems. Second, the influence of different operation conditions on water treatment were studied by natural membrane-forming, including three bed expansions（50%, 75% and 100%） and four carbon nitrogen ratios（0, 0.5, 1 and 2）. A synthetic substrate solution was continuously fed into the tanks after measuring of water quality every time. The results showed that the total ammonia-nitrogen concentration was decreased, fluctuating lightly in later period. The nitrite-nitrogen concentration was in a shape of clock, increasing quickly first a
ISSN:	1002-6819
DOI:	10.3969/j.issn.1002-6819.2015.03.033