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DISINFECTION OF FALAJ WATER USING SOLAR DISINFECTION (SODIS)Moza Juma Salim Al Jabri S.Sreedhar ReddyDepartment of Civil and Environmental Engineering, College Of Engineering and Architecture, University of Nizwa, Nizwa, Sultanate of Oman

OBJECTIVE OF THE STUDYIn this present study an attempt has been made to find the effectiveness of solar disinfection(SODIS) for the inactivation of coli form bacteria (Total Coli form) present in the Falaj water. Effectiveness SODIS is measured by varying experiment sample volume ( 200 mL, 500 mL 1 lit and 2.5 lit), exposure time(1 hr, 2 hr,3hr and 4 hr), bottle color( transparent and colored) and bottle type(glass, thin PET, thick PET, less plastic PET)CONCEPT OF SODISRESULTS

CONCLUSIONFrom the experimental results it is found that exposure time and volume of sample have significant effect on percentage removal of coli form present in the Falaj water. As exposure time increased percentage removal increases and volume of the sample has inverse effect on percentage removal. From bottle type, glass bottle and less plastic PET bottles are more effective compared to thick PET and thin PET bottles. Results of this study indicate that SODIS is an effective disinfection methodology for Falaj water