KOMBINASI TEKNOLOGI AERASI-FILTRASI PADA PENGOLAHAN AIR LIMBAH DOMESTIK (Grey Water) DI RUSUNAWA BURING 1

Abstract

Domestic wastewater is waste water originating from activities and or businesses from dormitories, apartments, commerce, offices, restaurants and settlements (real estate). Domestic wastewater in principle includes two groups, namely black water (toilet waste water) and gray water (non-toilet waste water). Until now there is still very little use of recycled water in the community because it is constrained by several factors, both technical and non-technical (regulatory, economic, social, and others) that need to be anticipated together. Proper treatment is needed in order to be able to treat domestic wastewater to meet clean water quality standards. The location of the case study in this research is Rusunawa Buring 1 Malang City. The implementation of this research is to determine the effectiveness of wastewater treatment using aeration and filtration processes of silica sand, activated charcoal, and zeolite media. The implementation of the aeration process uses the addition of EM4, and then the wastewater passes through the filter through zaolite media, activated charcoal, and silica sand. The result is that Aeration treatment using air flowrate of 3 L/m and 6 L/m and filtration using 60 minutes, 90 minutes, and 120 minutes is able to reduce the parameters of Total Suspended Solid (TSS), Chemical Oxygen Demand (COD), and Biochemical Oxygen. Demand (BOD) significantly. The percentage of removal of BOD, COD, and TSS after processing reached 89%, 87%, and 99.87%, respectively, resulting from variations in aeration air flowrate of 6 L/m and a filtration time of 120 minutes.