农业环境科学学报2025，Vol.44Issue(7)：1883-1892,10.DOI:10.11654/jaes.2024-0719
工厂化循环水养鳗系统中悬浮颗粒物的特征及去除
Characteristics and removal of suspended solids in an industrial recirculating aquaculture system for eel
摘要
Abstract
The objectives of this study are to understand the basic characteristics of suspended solids in eel(Anguilla rostrata)culture water from an industrial recirculating aquaculture system(RAS)and to quantitatively study the removal performance of the suspended solids by a tailwater reuse system in which a horizontal sedimentation tank is the pretreatment unit and fiber filtration is the core process.The changes in particle size and concentration of the suspended solids in an eel RAS located in Fuqing,Fujian were analyzed throughout the day.The results showed that particle size distribution,suspended solid concentration,and water turbidity changed relatively little throughout the day but were significantly affected by the body size of cultured eels.The average particle size(D50)ranged from 69 μm to 113 μm,and the mean concentration of suspended solids and water turbidity were 70-181 mg·L-1 and 45-76 NTU,respectively.This implied that the water from eel RAS was a type of water with high solid content.The suspended solids contained high level of volatile matter(66.39%),and the contents of nitrogen,phosphorous,and organic matter in the suspended solids reached 35.12,14.01 mg·g-1,and 242.26 mg·g-1,respectively.When retaining in water,nitrogen,phosphorous,and organic matter could be released from the suspended solid to water.After soaking the suspended solids in deionized water for 3 h,the concentrations of total nitrogen,total phosphorous,and permanganate index in aqueous solution were detected to be 23.63,8.29 mg·L-1,and 33.70 mg·L-1.Thus,an endogenous pollution was formed,increasing water contamination load.After the aquaculture water was treated by the tailwater reuse system,the particle size of the suspended particles was significantly reduced.The reuse system exhibited excellent removal performance for suspended particles,the removal rates of which at 5:00 and 13:00 reached 96.36%and 97.48%,respectively.关键词
鳗鲡/循环水养殖系统/悬浮颗粒物/粒径分布/尾水处理/水产养殖Key words
Anguilla rostrata/industrial recirculating aquaculture system/suspended solid/particle size distribution/tailwater treatment/aquaculture分类
资源环境引用本文复制引用
张铭栋,张瑞瑞,钟传明,吴锡辉,袁奥成,钟国龙,叶翚,穆景利..工厂化循环水养鳗系统中悬浮颗粒物的特征及去除[J].农业环境科学学报,2025,44(7):1883-1892,10.基金项目
2023年度福建省促进海洋与渔业产业高质量发展专项资金项目(FJHYF-L-2023-35) （FJHYF-L-2023-35）
福州海洋研究院"揭榜挂帅"科技项目(2023F07,2024F18) Special Fund Project for Promoting High Quality Development of Marine and Fisheries Industry in Fujian Province(FJHYF-L-2023-35) （2023F07,2024F18）
Scientific Project of Fuzhou Institute of Oceanography(2023F07,2024F18) （2023F07,2024F18）
