The Effectiveness of Using Alum Made of Uncoated Aluminium Foil Waste on the Containing of Dig Well Water that Contains High Metal Iron and Manganese into Clean Water

Nyoman Sri Widari, Abas Sato, Agung Rasmito

Abstract: Water is a primary need that is very important for human life. In the results of observations in the Banjarsari village, researchers found that all residents still use dug well water for various activities, and it contains high levels of iron and manganese so that some people have added alum in their wells to get clear water. The aim of this research is to find out how much effective alum made from uncoated aluminum foil waste is to improve the characteristics of dug well water compared to use commercial alum so that it can provide information for the public to get clean water that meets standard quality. Research shows that the use of alum with the same dose of 800 ppm turns out to be more effective than alum made of uncoated aluminum foil. Well water processed using alum made from uncoated aluminum foil decreased the pH value by 11.6%; Pt-Co color value decrease 66.66%; decrease in NTU 89.3%; decrease in TSS 61.81%; a decrease in Fe 60.88% and a decrease in Mn 40.23% while using commercial alum there was a decrease in the pH value of 13.04%; Pt-Co color value is 74.24%, NTU decrease is 92.76%; decrease in TSS 66.86%; Fe decreases 62% and Mn decrease 46.46%. From the research results, the parameters of pH, color, NTU and TSS have met the standards of the Minister of Health, while the metal parameters of Fe and Mn have not met the standards.

Keywords: effectiveness, alum, aluminum foil, well water, iron, manganese