工业化循环水养殖系统移动床生物膜反应器的设计  

Optimization design and experiment of moving bed biofilm reactor in industrialized recirculating aquaculture system

作　　者：赵越 刘鹰 李贤[1] 孙国祥[1] 徐建平 周毅[1] ZHAO Yue;LIU Ying;LI Xian;SUN Guo-xiang;XU Jian-ping;ZHOU Yi(Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China;University of Chinese Academy of Sciences,Beijing 100049,China;College of Ocean Technique and Environment,Dalian Ocean University,Dalian 116023,China;School of Environmental and Municipal Engineering,Qingdao Technological University,Qingdao 266033,China)

机构地区：[1]中国科学院海洋研究所,山东青岛266071 [2]中国科学院大学,北京100049 [3]大连海洋大学海洋科技与环境学院,辽宁大连116023 [4]青岛理工大学环境与市政工程学院,山东青岛266033

出　　处：《大连海洋大学学报》2018年第5期639-643,共5页Journal of Dalian Ocean University

基　　金：国家自然科学基金资助项目(31472312);青岛市海洋经济创新发展示范城市重点项目

摘　　要：为建立一种科学、合理、高效的生物滤器设计方法,以移动床生物膜反应器在大西洋鲑循环水养殖系统中的应用为例,首先应用物质平衡原理精准计算循环水养殖系统最大氨氮产生量、最大允许氨氮浓度、生物滤器满足不同要求的流量等关键参数;随后根据移动床生物反应器的特点结合理论目标负载和生产经验对计算结果进行优化,并确定生物滤器的运行参数(流量286 m3/h、水池规格4 m×4 m×2. 5 m、水力停留时间29 min、循环次数20次/d等);最后根据设计标准等确定池体、供水设备、Kaldnes K3填料(填充率40%)、曝气设备(JGR150型罗茨鼓风机)等参数。本设计可为工业循环水养殖模式可持续发展提供科学依据及技术支持。In response to increasing strict regulations on aquatic product quality,organic matter and nitrogen discharge,industrial recirculating aquaculture systems(RASs)are getting more and more application because of their minimal environmental impact and controlled operation.As a core unit of RASs,marine biofilters play an important role in controlling water quality.It is important to establish a scientific,reasonable and efficient design to improve the purifying efficiency of the biofilters.In this paper,the production situation of a certain farm was taken as an object to design a moving bed biofilm reactor using material balance principle and water purification facilities construction technology.Under the guidance of the balance principle of nitrogen,the maximum ammonia production rate,maximum allowable ammonia nitrogen concentration in culture ponds,quantity of exchanged water,and oxygen demand of the tank and biofilter were calculated based on the oxygen consumption rate of aquaculture organisms,oxygen consumption of nitrification and the dissolved oxygen balance.The three flow rates required for removal of target ammonia nitrogen and for dissolve oxygen in the culture tank and biofilter were calculated.On the basis of the above calculation,several key parameters were precisely established according to the water treatment facilities construction technical specifications and production experience,including the flow rate,volume,circulation,hydraulic retention time,quantity of exchanged water and filtration equipment.The main technical parameters were determined as the circulated flow rate of 286 m 3/h,volume of 140.59 m 3 in four biofilters of each 4 m×4 m×2.5 m,the water level of 2.2 m,hydraulic retention time of 29 min,exchanged water of 1.16 m 3/h,at a rate of 20 times a day,the diameters of 300 and 200 mm in total and branch inlet pipe,blower volume of 1716 m 3/h and the carrier Kaldnes K3 filling with 40%.It is put forward to provide a complete design method for the proper design of biofilter with the above pro

关 键 词：循环水养殖系统 生物滤器 设计 移动床生物膜反应器 

分 类 号：S969.38[农业科学—水产养殖] X714[农业科学—水产科学]