| 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. |
| 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 |
| 投稿时间：2024-08-27 |
| DOI：10.11654/jaes.2024-0719 |
| 中文关键词: 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 |
| 英文关键词: Anguilla rostrata industrial recirculating aquaculture system suspended solid particle size distribution tailwater treatment aquaculture |
| 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）；福州海洋研究院“揭榜挂帅”科技项目（2023F07，2024F18） |
| 作者 | 单位 | E-mail | | 张铭栋 | 闽江学院地理与海洋学院, 福州海洋研究院, 福建省海洋生物多样性保护与永续利用重点实验室, 福州 350108 | | | 张瑞瑞 | 闽江学院地理与海洋学院, 福州海洋研究院, 福建省海洋生物多样性保护与永续利用重点实验室, 福州 350108 | | | 钟传明 | 福建省水产技术推广总站, 福州 350002 | 737233659@qq.com | | 吴锡辉 | 闽江学院地理与海洋学院, 福州海洋研究院, 福建省海洋生物多样性保护与永续利用重点实验室, 福州 350108
温州大学生命与环境科学学院, 浙江 温州 325035 | | | 袁奥成 | 闽江学院地理与海洋学院, 福州海洋研究院, 福建省海洋生物多样性保护与永续利用重点实验室, 福州 350108
河北工业大学土木与交通学院, 天津 300401 | | | 钟国龙 | 福建省淡水水产研究所, 福州 350002 | | | 叶翚 | 福建省水产技术推广总站, 福州 350002 | | | 穆景利 | 闽江学院地理与海洋学院, 福州海洋研究院, 福建省海洋生物多样性保护与永续利用重点实验室, 福州 350108 | jlmu@mju.edu.cn |
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| 中文摘要: |
| 为了掌握工厂化循环水养殖模式下鳗鲡（Anguilla rostrata）养殖水体中悬浮颗粒物的基本特征，并定量研究以平流沉淀池为预处理单位、以纤维过滤为核心工艺的尾水回用系统对悬浮颗粒物的去除效果，本研究对福建省福清市某工厂化循环水养鳗系统中悬浮颗粒物的粒径和浓度在1 d中的变化进行分析。结果表明，1 d中水中悬浮固体的粒径分布、浓度及水体浊度波动较小，但受养殖鳗鲡规格的影响较为显著，平均粒径（D50）介于69~113 μm，平均悬浮固体浓度介于70~181 mg·L-1，平均浊度介于45~76 NTU。可见，循环水养鳗水体是一种固含量较高的水体。悬浮颗粒物中挥发分占比达66.39%，氮、磷和有机质含量也高至35.12、14.01 mg·g-1和242.26 mg·g-1，滞留在水中会不断向水体释放氮、磷和有机物，3 h时水中总氮、总磷和高锰酸盐指数分别达到23.63、8.29 mg·L-1和33.70 mg·L-1，形成内源污染，增加水体污染负荷。养殖水经过回用系统处理后，水中悬浮颗粒物的粒径总体变小，回用系统对水中悬浮颗粒物去除效果优异，在5：00和13：00时对悬浮颗粒物的去除率可分别达96.36%和97.48%。 |
| 英文摘要: |
| 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. |
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