Journal
INTERNATIONAL JOURNAL OF HYGIENE AND ENVIRONMENTAL HEALTH
Volume 218, Issue 8, Pages 731-741Publisher
ELSEVIER GMBH, URBAN & FISCHER VERLAG
DOI: 10.1016/j.ijheh.2015.09.002
Keywords
Viruses; Bacteria; Parasites; Disinfection; Monte Carlo simulation; Log-normal distribution
Funding
- Federal Ministry of Education and Research within the research program FONA-RiskWa [02WRS1283A]
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Fecal contamination of water resources is a major public health concern in densely populated areas since these water bodies are used for drinking water production or recreational purposes. A main source of this contamination originates from combined sewer overflows (CSOs) in regions with combined sewer systems. Thus, the treatment of CSO discharges is urgent. In this study, we explored whether ozonation or UV irradiation can efficiently reduce pathogenic bacteria, viruses, and protozoan parasites in CSOs. Experiments were carried out in parallel settings at the outflow of a stormwater settling tank in the Ruhr area, Germany. The results showed that both techniques reduce most hygienically relevant bacteria, parasites and viruses. Under the conditions tested, ozonation yielded lower outflow values for the majority of the tested parameters. (C) 2015 Elsevier GmbH. All rights reserved.
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