Comparison of Nanofiltration with Reverse Osmosis in Reclaiming Tertiary Treated Municipal Wastewater for Irrigation Purposes

This study compares the performance of nanofiltration (NF) and reverse osmosis (RO) for reclamation ultrafiltered municipal wastewater irrigation food crops. RO NF technologies were evaluated at different applied pressures; each technology was in terms water flux, recovery rate, specific energy consumption quality permeate. It found that permeate from process complied with Food Agriculture Organization (FAO) standards pressures between 10 18 bar. At an pressure 20 bar, did not comply chloride, sodium calcium concentration. suitable as concentration exceeded allowable limits all pressures. In process, highest rate 36%, which achieved a 16 The this 0.56 kWh/m3. lowest 0.46 kWh/m3 12 bar 32.7%.