화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.37, 372-379, May, 2016
DOI10.1016/j.jiec.2016.03.049  Export Citation
Combined Sewer Overflow pretreatment with chemical coagulation and a particle settler for improved peracetic acid disinfection
Ravi Kumar Chhetri, Arne Bonnerup1, and Henrik Rasmus Andersen†
  • Department of Environmental Engineering, Technical University of Denmark, Bygningstorvet, Building 115, 2800 Kgs. Lyngby, Denmark
  • 1Bonnerup Consult APS, Fynsvej 56, 5500 Middelfart, Denmark
E-mail:
Full scale disinfection by peracetic acid (PAA) was achieved on Combined Sewer Overflow (CSO) water, which was pre-treated physically by a fast settling-filtration unit. Disinfection of untreated CSO water using PAA was compared to treatment using a particle separator (HydroSeparator®) and additional coagulation with poly-aluminum-chloride. Disinfection for Enterococcus increased with the applied dose of PAA and additional improvement was achieved when it was preceded by chemical coagulation with 5 mg L-1 poly-aluminum-chloride. When Enterococcus was reduced by treatment in the HydroSeparator, followed by PAA treatment during a CSO event, the treatment was sufficient to maintain microbial quality in the recipient water.
Keywords:Combined Sewer Overflows;Coagulation;Poly-aluminium chloride;Disinfection;Peracetic acid;Bathing water
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