AWAM International Conference on Civil Engineering 2019 (AICCE'19) - Nibong Tebal - Malaysia (2019-08-21)

Characterization of Aerobic Granular Sludge (AGS) formation during Start-up Phase for Leachate Treatment

The treatment of landfill leachate at Pulau Burung, Penang was investigated by using aerobic granular sludge (AGS) during Start-up. The AGS was cultivated from a lab-scale with 10L working volume of sequencing batch reactor (SBR). The treatment performance and effluent quality of AGS reactors show the CODs have a small difference with CODt as a parameter to assess the quality of effluent. As a key parameter in the biological treatment process, the begin-ning of OUR value fluctuates, until the OUR of granules reached maximum value on day 47 with 0.85 (mg O₂/L/min) that shows the maximum value due to microbes grow and reproduce rapidly. In this study, the SRT was conducted in a range of 3 to 25 d, was fluctuate between days 0 to 50 that indicates the SBR system was unstable conditions and immature aerobic granules until day 50. The AGS morphology shows although the granules not matured yet during Start-up phrase but the settling properties exhibited at 47 days indicating good settle-ability when obtained the SVI₃₀ between 50-80 mL/g. The efficiencies of ammonia removal remained high at above 95% from days 30 to 50 with a pH value of 7.9-8.2 but adversely when the pH value more than 8.5.
Miss NUR AIN, Dr. NIK AZIMATOLAKMA AWANG