海洋科学2017，Vol.41Issue(8)：46-52,7.DOI:10.11759/hykx20161229002
气水比对移动床生物滤器净化海水养殖废水的影响
Effect of gas-water ratio on removal efficiency of marine aquaculture wastewater in moving bed biofilm reactor
摘要
Abstract
The biological filter is the central unit in recirculating aquaculture systems (RAS) and the gas-water ratio is the key factor that influences the treatment efficiency of moving bed biofilm reactors. To determine the best gas-water ratio, in this paper, we evaluated the effect of the gas-water ratio on the purification efficiency in a ma-ture moving bed biofilm reactor. We investigated the removal rates of total nitrogen (TAN), accumulation rates of nitrite (NO2--N), and chemical oxygen demand (COD) at different gas-water ratios (6:1, 10:1, 15:1, 20:1, 30:1). The results showed that as the gas-water ratio increased from 6:1 to 30:1, the TAN removal rate first increased and then decreased, whereas the accumulation rate of NO2--N first decreased and then increased. The gas-water ratio of 6:1 was associated with a better treatment efficiency than other gas-water ratios, with the best removal rates for TAN (12.55％ ± 0.80％), COD (16.63％ ± 1.28％), and the relatively lowest NO2--N (109.71％ ± 23.94％) accumulation rate. Our results provide a reference for the optimization of moving bed biofilm reactors in industrialized production.关键词
移动床生物滤器/海水养殖废水/气水比/净化效能Key words
aquaculture wastewater/moving bed biofilm reactor/gas-water ratio/treatment effect分类
资源环境引用本文复制引用
马晓娜,李贤,张延青,王博,李甍,刘鹰..气水比对移动床生物滤器净化海水养殖废水的影响[J].海洋科学,2017,41(8):46-52,7.基金项目
国家自然科学基金(31472312, 41306152, 31402283) （31472312, 41306152, 31402283）
国家科技支撑计划(2014BAD08B09) （2014BAD08B09）
江苏省重点研发计划(BE2015325) （BE2015325）
青岛市海洋经济创新发展示范城市重点项目-工业化循环水高效智能养殖装备产业链协同创新与构建项目[National Natural Science Foundation of China, No31472312, No. 41306152, No. 31402283 （）
the National Key Technologies R&D Pro-gram (2014BAD08B09) （2014BAD08B09）
the JIANGSU Province key R&D Project (BE2015325) （BE2015325）
the key Program of Qingdao Innovation and Demonstration in Marine Economy Development (Construction of the Innovative Industry Chain for Efficient and Intelligent Equipment in Recirculating Aquaculture System)] （Construction of the Innovative Industry Chain for Efficient and Intelligent Equipment in Recirculating Aquaculture System）
