高溶氧对黄铁矿-生物炭基人工湿地处理海水养殖尾水的影响研究  

Study on the effect of high dissolved oxygen on the treatment of marine aquaculture tail water by pyrite-biochar based constructed wetland

作　　者：邵月威 吕剑[1,2] 王建华 张翠[1] 武君[3] 邓传燕 初闻武 SHAO Yuewei;LYU Jian;WANG Jianhua;ZHANG Cui;WU Jun;DENG Chuanyan;CHU Wenwu(Key Laboratory of Coastal Environmental Processes and Ecological Remediation,Yantai Institute of Coastal Zone Research,Chinese Academy of Sciences,Yantai 264003,China;University of Chinese Academy of Sciences,Beijing 100049,China;Yantai Research Institute,Harbin Engineering University,Yantai 264006,China;Shandong Evergreen Seedlings Technology Co.,Ltd,Weifang 262716,China;Boxing Country Fisheries Service Center,Binzhou 256500,China)

机构地区：[1]中国科学院烟台海岸带研究所中国科学院海岸带环境过程与生态修复重点实验室,山东烟台264003 [2]中国科学院大学,北京100049 [3]哈尔滨工程大学烟台哈尔滨工程大学研究院,山东烟台264006 [4]山东恒兴种业科技有限公司,山东潍坊262716 [5]博兴县渔业服务中心,山东滨州256500

出　　处：《海洋环境科学》2025年第1期67-74,共8页Marine Environmental Science

基　　金：国家重点研发计划课题、项目(2023YFD2400405,2023YFD2400400);国家自然科学基金项目(42277037,41907152);泰山学者工程专项(tstp20240522);山东省自然科学基金项目(ZR2020QD131);中国科学院科技服务网络计划(STS计划)区域重点项目(KFJ-STS-QYZX-114)。

摘　　要：本研究搭建以黄铁矿-生物炭为基质的人工湿地,分析了溶氧浓度对海水养殖尾水处理效果的影响。当进水溶氧浓度为3~5 mg/L和6~8 mg/L时,人工湿地对TN的去除率为20%~30%;当进水溶氧浓度为0~2 mg/L时,TN去除率在40%以上,但生成的NO_(2)-N浓度达到5.07 mg/L,危害生物健康。高溶氧浓度更有利于磷酸盐的去除(PO_(4)-P),当进水PO_(4)-P浓度为33.10 mg/L时,进水溶氧为6~8 mg/L的人工湿地对PO_(4)-P的去除率在37%以上。SEM-EDS扫描显示,处理过养殖尾水的黄铁矿表面存在铁磷配合物,这进一步证明了该系统对尾水中的磷有一定去除能力。微生物群落组成分析表明,适当提高进水溶氧浓度有利于黄铁矿-生物炭基人工湿地微生物富集。结果表明,本研究所构建的人工湿地系统对高溶氧养殖尾水有较好的处理能力,为海水养殖尾水的处理提供了理论依据。In this study,a constructed wetland based on pyrite—biochar was constructed to analyze the effect of dissolved oxygen concentration on the tail water treatment effect of mariculture.When the influent dissolved oxygen concentration was 3-5 mg/L and 6-8 mg/L,the TN removal efficiency of the constructed wetland was stable between 20%and 30%.When the concentration of dissolved oxygen in the influent was 0-2 mg/L,the TN removal rate was more than 40%,but the NO_(2)-N concentration generated was up to 5.07 mg/L,which was harmful to biological health.High dissolved oxygen concentration was more conducive to the removal of phosphate(PO_(4)-P).When the PO_(4)-P concentration in the constructed wetland was 33.10 mg/L,the removal rate of PO_(4)-P in the constructed wetland with dissolved oxygen concentration of 6-8 mg/L was more than 37%.SEM-EDS scanning showed the presence of Fe-P complexes on the surface of pyrite treated with aquaculture tail water,which further proved that the system had some ability to remove P from tail water.The analysis of microbial community composition showed that appropriately increasing the concentration of dissolved oxygen in influent water was conducive to microbial enrichment in pyrite-biochar based constructed wetland.The results showed that the constructed wetland system in this study had a good treatment capacity for tail water of high-dissolved oxygen aquaculture,which provided a theoretical basis for the treatment of tail water of mariculture.

关 键 词：人工湿地 黄铁矿 养殖尾水 反硝化 

分 类 号：X714[环境科学与工程—环境工程]