文章摘要
聂正鑫,蒋芷榆,刘燕青,曹羡,李先宁.休耕田对水产养殖废水抗生素去除及风险评估[J].农业环境科学学报,2023,42(2):451-460.
休耕田对水产养殖废水抗生素去除及风险评估
Risk assessment of antibiotics removal from aquaculture wastewater from fallow fields
投稿时间:2022-04-23  
DOI:10.11654/jaes.2022-0413
中文关键词: 养殖废水  磺胺甲恶唑  去除贡献率  风险评估
英文关键词: aquaculture wastewater  antibiotic sulfamethoxazole  removal contribution rate  risk assessment
基金项目:农村生活污水精准化治理及信息化监管技术研究与科技示范(BE2021619)
作者单位E-mail
聂正鑫 东南大学能源与环境学院, 南京 210096  
蒋芷榆 江苏省环保产业技术研究院有限公司, 南京 210096  
刘燕青 东南大学能源与环境学院, 南京 210096  
曹羡 东南大学能源与环境学院, 南京 210096  
李先宁 东南大学能源与环境学院, 南京 210096 lxn@seu.edu.cn 
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中文摘要:
      根据水产养殖废水集中于冬季排放和休耕田需在冬季引水调质的现实需求,提出将水产养殖废水回用休耕田的技术方案,并对废水中典型抗生素磺胺甲恶唑(SMX)在休耕田中的降解途径和效果进行研究,同时对水产养殖废水回用示范区休耕田进行健康风险分析。结果表明:土壤微生物降解是去除废水中SMX的主要途径,去除贡献率为65%~78%,土壤固定和植物吸收对SMX的去除贡献较低。在微生物群落属水平上检测到Arthrobacter (节杆菌属)、Sphingomonas (鞘氨醇单胞菌属)和Bacillus (芽孢杆菌属) 3类降解SMX的优势菌属。TN、NO3--N、TP和CODCr的去除效果均随SMX浓度升高而降低。在消纳水产养殖废水的休耕田中,残留的抗生素对人体健康和土壤生态系统的风险商值小于0.01,其潜在风险可忽略不计。
英文摘要:
      Aquaculture wastewater is concentrated in winter and fallow fields need to be diverted and tempered in winter. This paper proposed a technical scheme to reuse aquaculture wastewater in fallow fields and analyzed the degradation of the typical antibiotic sulfamethoxazole(SMX) in wastewater in fallow fields. Meanwhile, a health risk analysis was carried out on the fallow fields in the demonstration area for the reuse of aquaculture wastewater. The results showed that soil microbial degradation was the main mechanism by which SMX was removed from wastewater, with a removal contribution rate of 65%-78%, whereas soil adsorption and plant uptake contributed less to the removal of SMX. At the genus level, Arthrobacter, Sphingomonas, and Bacillus were the dominant SMX-degrading genera. The removal efficiencies of TN, NO3--N, TP, and CODCr decreased with increasing SMX concentration. In fallow fields that consume aquaculture wastewater, the risk entropy of residual antibiotics to human health and soil ecosystems was less than 0.01, and the potential risks were negligible.
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