Abstract
Soil infiltration treatment (SIT) system commonly exhibited effective chemical oxygen demand (COD) removal, but few researches were focused on COD removal models. In shallow soil infiltration treatment (SSIT) systems, COD removal could be simulated by an integrated COD removal model with the effects of influent COD concentration (S0), water temperature (T) and nondegradable COD portion (Sn) on COD removal being incorporated into Eckenfelder Model. The results showed that the deviations could be within 5 mg l?1 for 95% of the data obtained from simulation and experiment when the integrated COD removal model being applied. This model can be used in the evaluation, analysis, prediction and management of COD removal in SSIT systems within the model application limits.
