Treatment of Wastewater Using Different Fixed Beds Reactors - A Pilot Plant Study

摘要

The present investigation was aimed to study removal of COD and NH 3 -N in two fixed bed reactors, onefilled with fibrous coconut coir and the other with alternate pebble bed with corrugated sheets. The experimentalstudy was conducted for a batch mode of operation. The bio-reactors were continuously aerated and fedwith hostel sullage having an initial average COD of 890 mg/L and NH 3 -N of 70 mg/L. The reactor withcoconut coir showed appreciable amount of COD removal of 79% to 84% and nitrification of 56% to 71% fora detention period of 4-16hrs. The reactor with alternate pebble bed with corrugated sheets showed CODremoval of 70% to 75% and NH 3 -N of 50% to 65%. The use of various fixed beds having higher surface areais effective in removing COD and nitrogen levels in domestic sullage with high organic impurities. Fibrousmaterials like coconut coir seem to be a promising option in removal of COD and NH 3 -N comparing toconventional attached growth bed such as pebble bed along with corrugated sheets.