生猪废水处理和磷回收工艺中抗生素和耐药细菌的削减特征
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作者单位:

1.厦门华厦学院环境与公共健康学院;2.中国科学院城市环境研究所

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基金项目:

国家自然科学基金项目(41877058);中国科学院A类战略先导专项(XDA23020502);环境监测福建省高校重点实验室开放研究课题(HJJC1901)


Attenuation of antibiotics and antibiotic resistant bacteria during swine wastewater treatment and phosphate recovery process
Author:
Affiliation:

1.College of Environment and Public Health, Xiamen Huaxia University;2.Institute of Urban Environment, Chinese Academy of Sciences

Fund Project:

The National Natural Science Foundation of China (41877058); The Strategic Priority Research Program of the Chinese Academy of Sciences (XDA23020502); Open Fund of Key Laboratory for Environmental Monitoring in Colleges and Universities of Fujian Province (HJJC1901).

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    摘要:

    调查生猪废水处理和磷回收工艺中,厌氧消化、氧化池、磷回收流化床和潜流人工湿地对水质参数、抗生素、耐药细菌和病原菌丰度削减的贡献。结果表明,在水质指标方面,厌氧消化对COD的去除率最大,为40.28%;人工湿地对TP和NH4+-N的去除率最大,分别达到53.33%和67.74%;流化床对TP的回收去除率最大,为49.94%。在抗生素吸附和降解方面,厌氧消化、流化床和人工湿地对土霉素(OTC)和环丙沙星(CIP)具有较大幅度的去除,去除率范围分别为32.27%~63.77%和40.44%~44.11%;厌氧消化、氧化池和人工湿地对磺胺二甲嘧啶(SM2)具有中等幅度的去除,去除率范围为18.10%~28.52%。在耐药细菌方面,厌氧消化作为一级处理工艺对各类型耐药细菌均具有最大去除率(>50%);同样作为三级处理工艺,人工湿地能进一步削减耐药细菌的数量,而流化床出水中以奇异变形杆菌、鼠伤寒沙门氏菌和宋内氏志贺氏菌为主的耐药细菌数量出现反弹。微生物群落分析发现,人工湿地在降低病原细菌丰度方面优势显著。研究表明,设置潜流人工湿地承接流化床出水可进一步深化处理生猪废水。

    Abstract:

    This study investigated the contribution of anaerobic digestion (AD), oxidation pond (OP), fluidized bed (FB) and subsurface constructed wetland (CW) to the removals of traditional pollutants, antibiotics, antibiotic resistant bacteria (ARB) and pathogenic bacteria during swine wastewater treatment and phosphate recovery. For conventional pollutants, the removal efficiency of COD by AD reached up to 40.28%, whereas those of TP and NH4+-N by CW reached up to 53.33% and 67.74%, respectively. Additionally, the highest TP removal efficiency of (49.94%) was achieved by FB. For antibiotic adsorption and degradation, the removals of oxytetracycline (OTC) and ciprofloxacin (CIP) by AD, FB and CW ranged from 32.27%~63.77% and 40.44%~44.11% respectively, while the removals of sulfadimidine (SM2) by AD, OP and CW ranged from 18.10%~28.52%. For ARB elimination, the removals of all kinds of ARB by AD were higher than 50%. As the third cascade of treatment process, CW further reduced the amount of all kinds of ARB, whereas the amounts of Proteus mirabilis, Salmonella aertrycke and Shigella soonei rebounded to some extent. Microbial community analysis indicated that the advantage of constructed wetland in reducing the abundance of pathogenic bacteria was significant. This paper suggest that it is feasible to use the subsurface CW for further treatment of swine wastewater after FB.

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  • 收稿日期:2020-10-21
  • 最后修改日期:2021-03-04
  • 录用日期:2021-03-04
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