The Comparison of Ozone Residual Concentration in Groundwater and Springwater with Conventional Ozonation and AOP (Advanced Oxidation Proces) Ozone-UV
Ozone is the strongest disinfectant compared to other disinfectants such as chlorine based disinfectant. In water, ozone will decompose into OH radicals, which are the most powerful oxidizing agent. Ozonation can be applied with both Conventional and Ozone-UV Advanced Oxidation Process (AOP) methods. Ozone-UV accelerates ozone decomposition into OH-radicals. This research aims at showing the influence of conventional ozonation and Ozone-UV on the concentration of residual ozone (C) at any contact time interval (T), as well as determining the influence of water quality to C and T. Bunga Bakung’s groundwater (GW) and Mulyawangi’s springwater (SW) were used as model water in semi-batch process at contact time intervals of 2, 4, 6, 8, 10, and 12 Minutes. For C measurement, Indigo Colorimetric method was used. It was found that C value in conventional ozonation was higher than Ozone-UV, both for GW and SW. The GW samples have higher C values, both in the Conventional ozonation and Ozone-UV. This condition is due to the high value of alkalinity in GW, which acted as an inhibitor in ozone decomposition.
Di buat oleh: Mohamad Rangga Sururi (rangsoer@yahoo.com), Kancitra Pharmawati (kancitra@yahoo.com), Sofi Widayani (4widayani_ophiesofi@yahoo.com)
Kata Kunci : AOP Ozone-UV, desinfection, conventional ozonation, ozone residual concentration
Keterangan : Water Management System and Social Capital, vol. 2, hal. 199 – 205.