INVESTIGATION OF HYBRID OXIDATION PROCESSES (UV/TIO2/H2O2) FOR SELECTED ORGANIC MICROPOLLUTANTS ELIMINATION AND CHANGE OF WATER TOXICITY

• Main Author: Mariusz Dudziak
• Format: Article
• Language: Polish
• Published: Polish Society of Ecological Engineering (PTIE) 2016-12-01
• Series: Inżynieria Ekologiczna
• Subjects: micropollutants; water treatment; oxidation processes; water toxicity
• Online Access: http://www.journalssystem.com/ie/BADANIA-HYBRYDOWEGO-PROCESU-UTLENIAJACEGO-UV-TIO2-H2O2-r-nW-ASPEKCIE-ELIMINACJI-WYBRANYCH-MIKROZANIECZYSZCZEN-ORGANICZNYCH-ORAZ-ZMIAN-TOKSYCZNOSCI-WODY,65501,0,2.html

All of the available and applicable chemical oxidants were found to affect the quality of the treated water or wastewater. It has been commonly observed that the oxidation processes generate by-products, which often possess unknown biological activity. Accordingly, the present study assessed the degree of degradation of mixture of selected micropollutants and the change of the solution toxicity in the UV/TiO2/H2O2 hybrid process. Water containing bisphenol A and diclofenac at a concentration of 1 mg/dm3 was treated. For toxicological evaluation of solution sample were used three different tests, ie. enzymatic Microtox® using luminescent strain of marine bacteria Aliivibrio fischeri, survival of the crustaceans Daphnia magna and the growth of duckweed Lemna minor. Decomposition of tested micropollutants depend on the processing time and the type of the oxidizing compound. However, during the process we observed adverse effects of water toxicity. The toxicity was documented in both bacteria and water plant.