Circulation Effect of Coffee Wastewater Flow in Water Hyacinth Phytoremediation

Abstract

Coffee processing wastewater containing high organic matter. If the coffee waste water discharged into waterways, it would contaminate and be harmful to people who consume it. Therefore, wastewater from the coffee industry must be treated before being discharged into the environment. Process employed was studied for treating coffee industry effluents using macrophyte water hyacinth (Eishornia crassipes (Mart.) Solms) in phytoremediation tank with circulation holes. Beside, it was analyzed the effect of the circulation in the aquarium wastewater treatment phytoremediation coffee at the decreasing of COD and BOD contant, turbidity, NH 3 and pH of the liquid waste. The wastewater fl ow were using two categories consisting four types of discharge with a different value of HRT (Hydraulic Residence Time). Based on this research, it was known that the roots of water hyacinth on the phytoremediation process affected the value of HRT despite the debit category and the density of water hyacinth, were similiar the other hand, it is known that the greater value of HRT, the higher the value of the reduction of coffee waste water parameters. The biggest reduction in the value of the parameter was at HRT 8 h 31 '50" where the removal efficiency of COD, BOD, turbidity, and NH3-N respectively were 97,5%, 97,6%, 75,4% and 82,1%.