TREATABILITY OF MUNICIPAL SOLID WASTE LANDFILL LEACHATE BY COMBINATION OF BIOLOGICAL PROCESS AND OZONATION

• Main Author: YENIS SEPTIARIVA NIM : 25315319, IVA
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/28189
• Institution: Institut Teknologi Bandung

Landfilling remains the primary disposal method for municipal solid waste in all countries. This practice potentially produces massive quantities and highly polluted leachate known as potential source of environmental contamination. This research aims to determine the treatability potential of leachate on laboratory scale so that the built leachate treatment plant (IPL) must go through several stages and tests of treatment effectiveness. The used variations are by several kind of characteristics of artificial leachate that represent young leachate and landfill leachate as old leachate using combination test of biological process and ozonation. There are three variations of leachate treatment. Variation I is a combination of anaerobic-aerobic biological process, variation II is ozonation as pre-treatment and variation III is ozonation as post treatment. The results reveal that the ratio of BOD5/COD young leachate is 0,58 and old leachate is 0,21. The young leachate result indicates that its organic content is more easily decomposed. The total efficiency of COD removal in variation I was 97,2% for young leachate and 48,7% for old leachate. Variation II, removal efficiency of COD young leachate increased from 82,6% to 97,3% and old leachate from 33% to 67,9%. Variation III of ozone as post treatment showed an increase of COD removal from 97,2% to 97,8% with 2,51 mg/L ozone concentration, 360 minutes ozone contact time on young leachate and 48,7% to 63,6% in old leachate. The use of ozone as both pre treatment and post treatment is less suitable to be applied to young leachate. Organic content in old leachate is dominated by recalcitrant organic materials and high ammonia that are able to be toxic. Therefore, pre and post treatment for old leachate are more suitable for application instead. In this study, anaerob-aerobic process combinations were well suited for application to young leachate with COD removal efficiency; NTK; ammonia and total P respectively reached 97,2%; 83,3; 96,9%; and 13,2%. In old leachate, the efficiency of NTK is 88,6%; ammonia 91,3%; nitrite 50,5%; and nitrate 3,4%. In variation II, old leachate able to increase efficiency of removal NTK; ammonia; and total P become 91,2%; 95,6%; and 46%. In the third variation, the efficiency of NTK and ammonia removal for young leachate increased to 86,7% and 97,2% while old leachate is 92,4% and 95,9%.