Dwina Moentamaria, Yanty Maryanty, Sri Rulianah, Zakijah Irfin, Rosita Dwi Chrisnandari, Andi Nina Asriana, Ernia Novika Dewi, Konita Ayudya Salma, Tania Asri Novita, Dini Asri Agustin
Disinfection process in commercial drinking water production has an important role to fulfill the quality standards. The ozonation process requires fidelity of duration, in order the production efficiency at Teaching Factory can be achieved. During this time, the ozone generator with a capacity of 5 grams/hour, for 20 minutes application still did not fill the standard. SNI 3554 2015 test results showed that out of 31 parameters, there are 2 parameters that haven't reached the requirements, namely the microbiological aspects. The target of this research is to get the exact ozonization time, until the total number of the bacteria become zero. The duration time used in the ozonation process are 50, 60, 70, 80, 90, 100, 120 minutes, before refined with ultra violet process. The result showed that the ozonation process have able to inactivated all bacteria up to 100%, except 83% Escherichia coli. Further processes need to be added to inactivated bacteria up to 100% for a larger scale commercial drinking water, so that all SNI requirements were fulfilled. The ozonation process is superior as an alternative to a safe desinfection process. The accuracy of duration time has an impact on the entire series of processes in order to provide efficiency for Teaching Factory. © 2023 American Institute of Physics Inc.. All rights reserved.
Department of Chemical Engineering, Politeknik Negeri Malang, East Java, Malang, 65141, Indonesia