Transport of E.coli of reclaimed water in flotation system

被引：0
|
作者：
Dou P.-Q. [1 ,2 ]
Kou J. [1 ]
Sun C.-B. [1 ]
Li M.-Y. [1 ]
机构：
[1] School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing
[2] Department of Safety Engineering, China University of Labor Relations, Beijing
来源：
Sun, Chun-Bao (suncb@ustb.edu.cn) | 2017年 / Science Press卷 / 39期
关键词：
Adsorption; Escherichia coli; Floatation; Reclaimed water; Transport;
D O I：
10.13374/j.issn2095-9389.2017.05.004
中图分类号：
学科分类号：
摘要：
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. © All right reserved.
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页码：669 / 675
页数：6
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共 19 条
  • [1] Liu H.J., Xu T., Sun C.B., The application of urban reclaimed water in flotation of Copper-Molybdenum Ore of Wushan, Nonferrous Met Miner Process Sect, 1, (2014)
  • [2] Castro-Hermida J.A., Garcia-Presedo I., Almeida A., Et al., Contribution of treated wastewater to the contamination of recreational river areas with Cryptosporidium spp. and Giardia duodenalis, Water Res, 42, 13, (2008)
  • [3] Wery N., Lhoutellier C., Ducray F., Et al., Behaviour of pathogenic and indicator bacteria during urban wastewater treatment and sludge composting, as revealed by quantitative PCR, Water Res, 42, 1, (2008)
  • [4] Zhang D.Y., He X.Q., Cheng L., Et al., Change of rotavirus in sewage treatment processes and associated health risk assessment, Asian J Ecotoxicol, 4, 5, (2009)
  • [5] Abit S.M., Bolster C.H., Cai P., Et al., Influence of feedstock and pyrolysis temperature of biochar amendments on transport of Escherichia coli in saturated and unsaturated soil, Environ Sci Technol, 46, 15, (2012)
  • [6] Sepehrnia N., Mahboubi A.A., Mosaddeghi M.R., Et al., Escherichia coli transport through intact gypsiferous and calcareous soils during saturated and unsaturated flows, Geoderma, 217-218, (2014)
  • [7] Kim H.N., Walker S.L., Escherichia coli transport in porous media: influence of cell strain, solution chemistry, and temperature, Colloids Surf B: Biointerfaces, 71, 1, (2009)
  • [8] Chrysikopoulos C.V., Aravantinou A.F., Virus attachment onto quartz sand: role of grain size and temperature, J Environ Chem Eng, 2, 2, (2014)
  • [9] Cai P., Huang Q.Y., Walker S.L., Deposition and survival of Escherichia coli O157: H7 on clay minerals in a parallel plate flow system, Environ Sci Technol, 47, 4, (2013)
  • [10] Chen G.X., Walker S.L., Fecal indicator bacteria transport and deposition in saturated and unsaturated porous media, Environ Sci Technol, 46, 16, (2012)
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