Determination of Kinetic Coefficients on Shiraz Municipal Wastewater Treatment Plant by Batch Reactor

The mathematical model for disintegration rate of substrates and production of biomass in the batch reactor is presented by Monod kinetic model. This model includes four required parameters which need to be estimated for proper planning of wastewater biological treatment units and the simulation process in the operational stage (Metcalf and Eddy, 2003).
Al-Malack (2006) determined the bio-kinetic coefficients of a submerged membrane bio-reactor to treat domestic wastewater. His coefficients were located in 0.49-0.58, 0.037-0.0151, 1.28-6.46, and 289-2933 domains for parameters Y, kd, k, and Ks, respectively, under various MLSS concentrations and substrate loading rates. Naghizadeh (2008) determined the bio-kinetic parameters for a domestic wastewater treatment plant through a submerged membrane reactor by the Monod equation. The results showed that the Y, kd, Ks, and μm coefficients were 0.067 mgVSS/mgCOD, 0.5 d-1, 65.5 mg/L, and 1.86 d-1, respectively. Mardani et al. (2011) studied the kinetic coefficients of South-Isfahan wastewater treatment plant, operating on the activated sludge process, in various treatment methods including conventional activated, extended aeration, and contact stabilization conditions in pilot scale. Their findings indicated that for the conventional activated condition, Y(mgVSS/mgCOD), kd(d-1), μm(d-1), and Ks(mgCOD/L) were in ranges of 0.48-0.80, 0.0189-0.026, 0.95-0.98, and 52-71, respectively; for the extended aeration condition were in ranges of 0.6174-1.2512, 0.0198-0.0309, 1.96-3.17, and 311.7-508, respectively; and for the contact stabilization condition were in ranges of 0.6322-0.713, 0.0172-0.0387, 0.23-0.42, and 13.8-50.8, respectively. The purpose of the present research is determining the kinetic coefficients for Shiraz domestic wastewater treatment plant using batch reactor method.