Classification of algogenic organic matter concerning its contribution to the bacterial regrowth potential and by-products formation |
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| Affiliation: | 1. Division of Urology, Veterans Affairs Medical Center, Durham, NC;2. Department of Biostatistics and Bioinformatics, Duke University School of Medicine, Durham, NC;3. Department of Urology, UCLA School of Medicine, Los Angeles, CA;4. Urology Section, Department of Surgery, Veterans Affairs Greater Los Angeles, Los Angeles, CA;5. Urology Department, University of California San Diego Health System, San Diego, CA;6. Department of Urology, Oregon Health and Science University, Portland, OR;7. Department of Urology, UCSF Helen Diller Family Comprehensive Cancer Center, San Francisco, CA;8. Section of Urology, Veterans Affairs Medical Center, Augusta, GA;9. Section of Urology, Medical College of Georgia, Augusta, GA;10. Division of Urology, Department of Surgery, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA;1. Department of Urology, Medical University of Vienna, Vienna, Austria;2. Department of Urology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan;3. Department of Urology, Jikei University School of Medicine, Tokyo, Japan;4. Department of Urology, Kantonsspital Winterthur, Winterthur, Switzerland;5. Department of Special Surgery, Jordan University Hospital, The University of Jordan, Amman, Jordan;6. Division of Urology, Cancer Prognostics and Health Outcomes Unit, University of Montreal Health Center, Montreal, QC, Canada;7. Martini-Klinik Prostate Cancer Center, University Hospital Hamburg-Eppendorf, Hamburg, Germany;8. Department of Urology, Weill Cornell Medical College, New York, NY;9. Department of Urology, University of Texas Southwestern Medical Center, Dallas, TX;10. Karl Landsteiner Institute of Urology and Andrology, Vienna, Austria;1. National Institute of Oncology, Department of Medical Oncology and Clinical Pharmacology \"C\", Budapest, Hungary;2. Department of Pathology, University of Szeged, Szeged, Hungary;3. Department of Oncotherapy, University of Szeged, Szeged, Hungary;4. National Institute of Oncology, Department of Radiotherapy, Budapest, Hungary;5. Semmelweis University, Department of Oncology, Budapest;6. Department of Urology, Semmelweis University, Budapest, Hungary;7. Boehringer Ingelheim RCV GmbH & Co. KG Branch Office Hungary, Budapest, Hungary;8. Pándy Kálmán Hospital Gyula, Gyula, Hungary;9. University of Szeged, Department of Oncotherapy, Szeged, Hungary |
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| Abstract: | The bacterial regrowth potential (BRP) and the by-products formation potential after the disinfection (DBP) are parameters recognized to be influenced by the origin of organic matter dissolved in water. A significant difference of the impact of humic compounds and algogenic organic matter (AOM), characteristic for raw waters from reservoirs, to both parameters can be assumed. In systematic laboratory experiments the influence of AOM on the BRP as well as DBP was examined. Different fractions of the AOM were chlorinated and treated with chlorine dioxide. In addition to that the influence of the ozonation was investigated. To assess the biodegradable fraction of the organic matter (BDOC) a large spectrum of byproducts (aldehydes and keto-acids) was analyzed. The BRP in the water was determined by the measurement of the increase of biomass in the water samples. It could be proved, that the chlorination of intact algae cells containing waters may cause a significant increase of the biodegradability in the water if the residual chlorine is totally required. In the case of the disinfection of the AOM containing waters with chlorine dioxide the relative increase of the BRP was lower in comparison to the chlorinated waters. The preozonation of the algae containing waters indicates an additional increase of the BRP, but only by ozonadon of the algae cells. The ozonation of the algae metabolites does not influence the BRP, but it causes a significant decrease of the THIvI-formation if chlorine is used for disinfection. |
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