TREATABILITY STUDIES OF SELECTIVE FIBROUS PACKING MEDIAS FOR SEWAGE TREATMENT

Three reactors filled with fibrous coffee husk blended with wooden chips (packing density 30 kg/m 3 ) and coconut coir fibers (packing density 40kg/m 3 and 70 kg/m 3 ) were taken as fixed film beds and studied under an experimental condition such as detention time of 24 h with 3h interval of sampling for the removal of COD, NH 3 -N, TSS and PO 4 3- from the sewage. The results obtained in the Regime phase of experiment revealed that the reactor filled with coffee husk blended with wooden chips showed appreciable amount of COD and ammonia nitrogen removal of 71% at an organic loading rate of 0.78kg /m 3 , orthophosphate and TSS removal were found to be 73% and 78% respectively.