کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
227307 | 464820 | 2016 | 8 صفحه PDF | دانلود رایگان |
• CSO disinfection was investigated by coagulation, settling and peracetic acid dosage.
• Particle separation improved peracetic acid exposure and disinfection efficiency.
• Applying PAX-XL 100 before the separator further increased disinfection efficiency.
• Above 1-log Enterococcus removal in untreated CSO requires 10 mg/L peracetic acid.
• 1-log Enterococcus removal improved with pretreatment to 2 ppm peracetic acid.
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.
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Journal: Journal of Industrial and Engineering Chemistry - Volume 37, 25 May 2016, Pages 372–379