| 引用本文: | 时文歆,赵丽晔,李冠洋,崔福义.生态塘中17α-块雌醇的去除途径与机制[J].哈尔滨工业大学学报,2010,42(8):1269.DOI:10.11918/j.issn.0367-6234.2010.08.019 |
| SHI Wen-xin,ZHAO Li-ye,LI Guan-yang,CUI Fu-yi.Removal pathway and mechanisms of 17α-ethinylestradiol in eco-pond systems for wastewater treatment[J].Journal of Harbin Institute of Technology,2010,42(8):1269.DOI:10.11918/j.issn.0367-6234.2010.08.019 |
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| 摘要: |
| 为了考察生态塘污水处理系统中17α-炔雌醇(EE2)的去除途径与机制,采用静态试验、动态吸附试验和连续流试验研究了菌藻塘和浮萍塘中EE2的降解与吸附特性,并进行了静态试验的质量平衡计算;采用酶联免疫法(ELISA)测定EE2的质量浓度.结果表明,接种的藻类和浮萍提高了废水中EE2的去除率.在持续180min的动态吸附试验中分别有25%和80%的EE2被藻类和浮萍所吸附,但6d的EE2质量平衡试验结果却显示被吸附的EE2只占6%,说明生态塘中的EE2首先被生物质快速吸附,而吸附态的EE2又被系统中的微生物进一步降解.连续流试验的结果也显示即使废水中的EE2质量浓度为ng/L级,菌藻塘和浮萍塘仍能有效地将其从废水中去除.吸附和生物降解是污水生态塘处理工程中EE2去除的主要途径. |
| 关键词: 17α-炔雌醇 吸附 生物降解 菌藻塘 浮萍塘 内分泌干扰素 |
| DOI：10.11918/j.issn.0367-6234.2010.08.019 |
| 分类号:X52 |
| 基金项目:国家科技支撑计划重点项目(2006BAJ08B09);哈尔滨工业大学城市水资源与水环境国家重点实验室自主课题(2008QN05) |
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| Removal pathway and mechanisms of 17α-ethinylestradiol in eco-pond systems for wastewater treatment |
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SHI Wen-xin1, ZHAO Li-ye2, LI Guan-yang1, CUI Fu-yi1
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1.State Key Laboratory of Urban Water Resources and Environment,Harbin Institute of Technology,Harbin 150090,China;2.Heilongjiang Urban Planning and Surveying Design and Research Institute,Harbin 150040,China
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| Abstract: |
| To investigate pathway and possible removal mechanisms of 17α-ethinylestradiol(EE2) in ecopond systems(algae ponds and duckweed ponds) for wastewater treatment,all of the laboratory scale batch tests,dynamic sorption tests and continuous flow tests were conducted to study the effect of sorption and biodegradation on EE2 removal.EE2 concentrations were detected by enzyme-linked immunosorbent assay(ELISA).The 6-day batch tests showed that the introduction of duckweed and algae into wastewater could enhance EE2 removal rate.In the 180-min dynamic sorption tests,about 25% and 80% of EE2 were sorbed by algae and duckweed respectively,which means occurrence of the swift sorption,while the mass balances indicated that only about 6% of the estrogens were bound to the biomass of algae or duckweed at the end of the 6-day tests,implying that EE2 was rapidly removed by sorption at the initial stage,while the sorbed EE2 was subsequently eliminated by biodegradation.Results of continuous flow tests revealed that even at ng/L level,EE2 could also be removed in algae and duckweed pond systems.Sorption and biodegradation are the main removal mechanisms of EE2 in eco-pond systems. |
| Key words: 17α-ethinylestradiol sorption bio-degradation algae pond duckweed pond endocrine disrupting chemicals(EDCs) |
