THE EFFECTIVENESS OF A FABRICATED BIO-FILTRATION SYSTEM IN TREATING THE DOMESTIC GREYWATER.

In many developing countries, domestic greywater remains as a large contributor of organic pollution in rivers. Considering rivers as the main source of freshwater, the level of pollution need to be minimized by pre-treating the domestic greywater from residential areas prior to release into the drains and rivers. With the need of this pre-treatment process and the economic burden to install current technologies, it is hence necessary to develop a more low-cost wastewater treatment system. Utilizing agriculture wastes as the bio-filter media in the greywater treatment system is one of the possible options to reduce the cost of treatment and accumulation of agricultural wastes. Therefore, this study focuses on the performance of agricultural wastes; coconut coir and rice husk, as low-cost packing media and biofilm material carrier for domestic greywater treatment. The performance of these media were evaluated based on the removal efficiencies of BOD₅ and COD from the wastewater samples. The results have shown that there were insignificant differences in the performance of both media in removing BOD₅ and COD, such that the removal efficiencies achieved by coconut coir media were 43.93% and 38.19% respectively, whilst the later recorded removal efficiencies of 42.42% and 34.85% respectively. [ABSTRACT FROM AUTHOR]