Combined Sewer Overflow pretreatment with chemical coagulation and a particle settler for improved peracetic acid disinfection

Ravi Kumar Chhetri; Arne Bonnerup; Henrik Rasmus Andersen

doi:10.1016/j.jiec.2016.03.049

Combined Sewer Overflow pretreatment with chemical coagulation and a particle settler for improved peracetic acid disinfection

Ravi Kumar Chhetri, Arne Bonnerup, Henrik Rasmus Andersen

Department of Environmental Engineering

Research output: Contribution to journal › Journal article › Research › peer-review

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Abstract

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.

Original language	English
Journal	Journal of Industrial and Engineering Chemistry
Volume	37
Pages (from-to)	372-379
ISSN	1226-086X
DOIs	https://doi.org/10.1016/j.jiec.2016.03.049
Publication status	Published - 2016

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title = "Combined Sewer Overflow pretreatment with chemical coagulation and a particle settler for improved peracetic acid disinfection",

abstract = "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{\textregistered}) 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.",

author = "Chhetri, {Ravi Kumar} and Arne Bonnerup and Andersen, {Henrik Rasmus}",

year = "2016",

doi = "10.1016/j.jiec.2016.03.049",

language = "English",

volume = "37",

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journal = "Journal of Industrial and Engineering Chemistry",

issn = "1226-086X",

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T1 - Combined Sewer Overflow pretreatment with chemical coagulation and a particle settler for improved peracetic acid disinfection

AU - Chhetri, Ravi Kumar

AU - Bonnerup, Arne

AU - Andersen, Henrik Rasmus

PY - 2016

Y1 - 2016

N2 - 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.

AB - 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.

U2 - 10.1016/j.jiec.2016.03.049

DO - 10.1016/j.jiec.2016.03.049

M3 - Journal article

VL - 37

SP - 372

EP - 379

JO - Journal of Industrial and Engineering Chemistry

JF - Journal of Industrial and Engineering Chemistry

SN - 1226-086X

ER -