Abstract :
Leachate treatment is usually used by biological processes that depend
microorganisms as decomposer substrate. Importance of the role and function the
kinetics parameter on the biological proses, then needed for research ability of
microorganisms to degrade organic matter in the leachate. This study aims to find
and determine the value of the parameter ì, Y, Ks, and Kd, which is used in the
calculation of biological leachate treatment process.
Process is carried in aerobic and the acclimated activated sludge was used in
batch reactors with different initial COD concentration (2600, 2100, 1600, 1100,
& 600 mg / l). The parameters observed on this research were COD (Chemical
Oxygen Demand), and MLVSS (Mixed Liquor Volatile Suspended Solids). The
research shown that ì values from 0.1027 - 0.5298 (d-1), the value of Y = 0.4583
(g VSS / g COD), Ks = 555.47 (mg/ l), ìmax = 0.1020 (day-1), Yt = 0.4583 (g VSS
/ g COD ) and the value of Kd = 1.37 x 10-16 (d-1).
Key words : leachate, activated sludge, kinetics parameter