污泥超高温好氧发酵去除氟喹诺酮类抗生素及其降解产物

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摘要对比分析了污泥传统高温好氧发酵(TC)和超高温好氧发酵(HTC)对诺氟沙星(NOR)、氧氟沙星(OFL)及其降解产物的去除性能.结果表明, 超高温好氧与高温好氧发酵25d时NOR去除率分别为91.8%, 92.1%, 产物诺氟沙星脱乙基(NORP)残留含量分别为628, 668μg/kg; OFL去除率分别为92.1%、88.1%, 产物氧氟沙星脱乙基(OFLP)残留含量分别为191, 675μg/kg, 相较于传统高温好氧发酵, 超高温好氧发酵使得NOR、OFL的生态风险分别降低3.1%、30.5%, 这表明超高温好氧发酵可以更有效地去除氧氟沙星及其降解产物, 降低发酵产物中OFL的环境暴露风险.同时, 超高温好氧发酵产物DOC/DON更低, 种子发芽指数高, 发酵产物植物毒性小, 有利于污泥的安全土地利用.

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	宋相通
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关键词 ：污泥, 超高温, 好氧发酵, 氟喹诺酮, 抗生素, 降解产物

Abstract：The removal performance of NOR, OFL and their degradation products from traditional thermophilic composting (TC) and from hyper-thermophilic composting (HTC) were compared. The results showed that after 25 days' hyper-thermophilic composting, the removal rate of NOR with TC and HTC was 91.8% and 92.1% with the residual NORP of 628 and 668μg/kg, respectively, while the removal rate of OFL was 92.1% and 88.1%, respectively with the residual OFLP and 191 and 675μg/kg, respectively. Compared with TC, HTC reduced the ecological risk of NOR and OFL by 3.1% and 30.5%, respectively, indicating that HTC could more effectively remove the ofloxacin and its degradation products and thus reduced the risk of environmental exposure to OFL in composting products. At the same time, the DOC/DON of hyper-thermophilic composting products was lower with the higher seed germination index and the plant toxicity of composting products was also lower, which is must be beneficial to the safe land use of sludge.

Key words： sludge hyper-thermophilic composting fluoroquinolone antibiotic degradation product

收稿日期: 2021-06-03

PACS:

X705

基金资助:中国长江三峡集团有限公司资助项目(202003080);国家重点研发计划(2020YFC1908702);国家重点研发计划(2021YFC3200704)

通讯作者: 董滨, 教授, dongbin@tongji.edu.cn E-mail: dongbin@tongji.edu.cn

作者简介: 宋相通(1996-), 男, 同济大学硕士研究生, 研究方向为固体废弃物资源化利用

引用本文:

宋相通, 杨明超, 张俊, 郭亚丽, 董滨. 污泥超高温好氧发酵去除氟喹诺酮类抗生素及其降解产物[J]. 中国环境科学, 2022, 42(1): 220-226. SONG Xiang-tong, YANG Ming-chao, ZHANG Jun, GUO Ya-li, DONG Bin. Removal of fluoroquinolone antibiotics generated from the sludge using hyper-thermophilic composting and its degraded products. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(1): 220-226.

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http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2022/V42/I1/220

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