Misgina Tilahun - Department of Chemical Engineering, KIOT, Wollo University, Ethiopia
haftom zenebe - Department of Chemical Engineering, Adigrat University, Ethiopia
Gebremedhin hishe - Department of Biological and Chemical Engineering, MIT, Mekelle University, Ethiopia
desta berhe - Department of Biological and Chemical Engineering, MIT, Mekelle University, Ethiopia

Safe and clean drinking water has major role for human health. The water quality can describe according to their physicochemical and biological characteristics and permissible limits have been fixed by international organization. The aim of study is to design and development drinking water treatment plant according to public health safety. The treatment plant was designed has been used the combination of reverse osmosis and ultrafiltration for purification of Mekelle City’s drinking water. Totally there are 13 unit operations used for design and the plant is designed to be used for the next 15 years. The design has been done with by using intelligen super pro designer version of 9.0, The results shows that total dissolved solid was decreased 119.2 mg/L and arsenic 0.0041 mg/L, which is meet the standard of drinking water.The engineering aspects of material balance, energy balance and cost estimation has also been discussed

Biological; Contaminates; Drinking; Pollutants; Treatment