PERFORMANCES OF REVERSE OSMOSIS AND NANOFILTRATION IN DESALINATION OF RIVER BRACKISH WATER .....

Morocco, like many other countries throughout the world, is experiencing water supply issues as a result of rising demand and diminishing conventional resources. Morocco has been using non-conventional water resources such as wastewater reuse and desalination water to address the problems for a long time. Desalination, which was formerly isolated to the south and coasts, is now spreading to the middle regions.

Mrirt is one of the northern cities where a desalination plant is expected to be built soon. The city is located far from the shore, and the treated water is slightly saline. The city already has a basic drinking water treatment plant. The National Office of Electricity and Drinking Water, in collaboration with Ibn Tofail University, chose to conduct this research to compare the results of Reverse Osmosis and Nano filtering technologies.

Pilot plants and commercial membranes such as BW30LE4040, NF90, and NF270 are used in the investigations. Operating pressure, flux, system recovery, salt rejection, and specific energy consumption were all investigated in order to improve system performance (SEC).

The results revealed that the experiment outcomes appear to be consistent with those predicted by the software.

The experiment found that at 10 bars of feed pressure, the recovery rate for BW30 is 28 percent and the energy consumption is 0.95 kwh/m3. The energy recovery rate for NF90 is 30 percent and 0.75 kwh/m3. However, in the predicted findings and under the same operating parameters as the pilot plant, the energy consumption values are 0.91 BW30 and 0.70 NF90.

As a result of the simulation software's findings, the maximum recovery rate can be obtained at 20 l/h/m2 of average flow, and the operating pressure required to run the RO membrane is much greater (14, 6 bar vs. 9, 90 bar) than that required to run the NF membrane.

Please see the link :- https://www.ikprress.org/index.php/JOGEE/article/view/326