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  • 标题:Indicator pathogens, organic matter and LAS detergent removal from wastewater by constructed subsurface wetlands
  • 本地全文:下载
  • 作者:Behrooz Karimi ; Mohammad H Ehrampoush ; Hossin Jabary
  • 期刊名称:Journal of Environmental Health Science and Engineering
  • 印刷版ISSN:2052-336X
  • 出版年度:2014
  • 卷号:12
  • 期号:1
  • 页码:52
  • DOI:10.1186/2052-336X-12-52
  • 语种:English
  • 出版社:BioMed Central
  • 摘要:

    Background

    Constructed wetland is one of the natural methods of municipal and industrial wastewater treatments with low initial costs for construction and operation as well as easy maintenance. The main objective of this study is to determine the values of indicator bacteria removal, organic matter, TSS, ammonia and nitrate affecting the wetland removal efficiency.

    Results

    The average concentration of E. coli and total coliform in the input is 1.127 × 1014 and 4.41 × 1014 MPN/100 mL that reached 5.03 × 1012 and 1.13 × 1014 MPN/100 mL by reducing 95.5% and 74.4% in wetland 2. Fecal streptococcus reached from the average 5.88 × 1014 in raw wastewater to 9.69 × 1012 in the output of wetland 2. Wetland 2 could reduce 1.5 logarithmic units of E. coli. The removal efficiency of TSS for the wetlands is 68.87%, 71.4%, 57.3%, and 66% respectively.

    Conclusions

    The overall results show that wetlands in which herbs were planted had a high removal efficiency about the indicator pathogens, organic matter, LAS detergent in comparison to a control wetland (without canes) and could improve physicochemical parameters (DO, ammonia, nitrate, electrical conductivity, and pH) of wastewater.

  • 关键词:Wastewater treatment; Pathogens removal; Natural treatment; Constructed wetland
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