[Hygienic, chemical and ecotoxicological aspects of the disinfection of biologically treated waste water by ozone and UV light].
Biologically treated waste water from two different municipal treatment plants with mainly domestic waste water on the one hand and industrial influenced waste water on the other hand was disinfected by UV-irradiation and ozonation. Hygienic, chemical and eco-toxic effects of the disinfection step were examined. It was found that by ozonation as well as by UV-irradiation the required guide and imperative values for fecal and total coliform bacteria were fulfilled. The UV-irradiation induces no changes concerning chemical waste water quality and toxic effects. In contrast to these results ozonation can lead to alterations in chemistry and toxicity depending on the waste water composition.
Iske
U
U
Universität Witten/Herdecke, Lehrstuhl für Umwelttechnik und Umweltmanagement.
Nelle
T
T
Oberg
C
C
Rudolph
K U
KU
Zander-Hauck
S
S
D004203:Disinfection; D004463:Ecology; D004755:Enterobacteriaceae / Q000187:drug effects / Q000302:isolation & purification; D005243:Feces / Q000382:microbiology; D006920:Hygiene; D010126:Ozone / Q000494:pharmacology*; D018675:Toxicity Tests; D014466:Ultraviolet Rays; D014865:Waste Disposal, Fluid; D014867:Water / Q000737:chemistry; D014871:Water Microbiology; D018508:Water Purification / Q000379:methods*
D014867:Water; D010126:Ozone