城市再生水中大腸桿菌在浮選過程中遷移規律

竇培謙; 寇玨; 孫春寶; 李明穎

doi:10.13374/j.issn2095-9389.2017.05.004

城市再生水中大腸桿菌在浮選過程中遷移規律

doi: 10.13374/j.issn2095-9389.2017.05.004

竇培謙^1,2,
寇玨¹,
孫春寶^1, ,,
李明穎¹

1) 北京科技大學土木與資源工程學院, 北京 100083
2) 中國勞動關系學院安全工程系, 北京 100048

詳細信息

中圖分類號: TD78+2
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出版歷程
- 收稿日期: 2016-11-04

Transport of E.coli of reclaimed water in flotation system

1) School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
2) Department of Safety Engineering, China University of Labor Relations, Beijing 100048, China

摘要

摘要: 通過再生水模擬浮選試驗和吸附、解吸附試驗分析研究了城市再生水中大腸桿菌在浮選過程中的遷移規律.研究結果表明：再生水中大腸桿菌能夠快速被礦物顆粒吸附，尾礦廢水繼續回用于浮選流程是安全的，但精礦、中礦、尾礦中吸附了大量的大腸桿菌，在特定暴露水平下會對從業人員構成健康風險；礦物顆粒對大腸桿菌的吸附是影響再生水中大腸桿菌在浮選過程遷移的主要因素；隨著大腸桿菌濃度的升高，大腸桿菌衰減率、吸附速率隨之下降；礦物顆粒對大腸桿菌的吸附對pH變化敏感，隨著pH升高，礦物顆粒對大腸桿菌的吸附呈下降趨勢，捕收劑煤油、Pj053和調整劑CaO的加入會明顯提高礦物顆粒對大腸桿菌的吸附.
- 再生水 /
- 大腸桿菌 /
- 浮選 /
- 遷移 /
- 吸附
Abstract: The transport of E.coli in reclaimed water in floatation system was investigated through simulate flotation, adsorption experiment and desorption experiments. The results show that E.coli in reclaimed water is rapidly adsorbed by ore particles, while tailing waste water can be reused to floatation safely. However, concentrates, middlings and tailings can pose health risks under certain exposure conditions. The transport of E.coli in flotation processes is dominated by the attachment of E.coli onto ore particles. Removal and adsorption rates decrease as the concentrations of E.coli increase. Meanwhile, E.coli adsorption on ore particles is sensitive to the changes of solution pH, and decreases as the solution pH increases. The attachment of E.coli onto mineral particles increases significantly at the presence of collector kerosene, PJ053, and the pH-adjusting agents CaO.
- reclaimed water /
- Escherichia coli /
- floatation /
- transport /
- adsorption

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參考文獻(17)

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