CARBON OXIDATION AND NITRIFICATION OF DAIRY WASTEWATER IN A TRICKLING FIL FILTER

摘要

In this investigation a single stage cross flow medium trickling filter was used to study the combined carbon oxidation and nitrification of synthetic dairy wastewater. The synthetic dairy wastewater was prepared to have influent TKN concentration of 30, 60 and 90 mg/1 at various COD concentrations (30-298 mg/1). The effect of organic loading rate on TKN removla was studied for three different hydraulic loading rates of 5,9 and 13 m~3/m~2.d. Within an organic loading rate of 0.39 kg COD/m~3.d the TKN removal efficiency was observed to be more than 60/100. The TKN removal percent showed a decreasing trend with increase in COD/TKN ratio. For organic load greater than 1.39 kg /COD/m~3.d the nitrate production was completely eliminated.