Design of reverse osmosis membrane for softening of groundwater at site of agriculture College –University of Tikrit –Iraq by using ROSA-72 software

This research paper is accomplished for designing reverse osmosis membrane for desalination and softening of groundwater at Tikrit University Site. The raw groundwater has TDS ranged between 1570 and 2910 mg/L, temperature, (23–25)C pH(6.27–8.6), Electrical conductivity (3070–3620) µs/cm, Ca(492–640) mg/L, Mg(41–437) mg/L, Total hardness (1400–3400) mg/L, SO4 (700–1296) mg/L, NO3(18.5–40) mg/L. Dissolved oxygen (1.5–4.5) mg/L and Turbidity (1.3–5)NTU. ROSA72, Reverse Osmosis System Analysis is applied to design the reverse osmosis system for softening the groundwater. The result showed reliable design criteria and high quality water which are feed water 0.3 m3/h, feed press 7.91 bar, concentration flow 0.26 m3/h ,membrane area 2.6 m2 permeate flow 0.05 m3/h. water recovery 15%, permeate TDS 39.41 mg/L. ROSA-72 software can be used efficiently in design of reverse osmosis systems.