Optimization of Small Scale Photovoltaic Reverse Osmosis of Brackish Water Desalination in Remote Area
Brackish and sea water desalination has became one of important fresh water sources in arid and semi-arid regions suffering from water scarcity. The reverse osmosis process which is one of desalination process requires large amount of electric energy, it�s around 3.5�5.0 kWh/m3 Hence, solar energy-powered reverse osmosis systems seem to be the promising technologies for brackish and seawater desalination, notably for small remote communities. These systems can be designed upon to water demand and energy resource data. This work aims to minimize the specific energy consumption (SEC) of a solar desalination plant which works on reverse osmosis process to produce fresh water from brackish water (BWRO).Two scenarios are taken into account; (1) BWRO without recovery device, (2) BWRO with energy recovery device (turbine). A mathematical model and an algorithm have been developed and validated through MATLAB. The results show that the minimum value of specific energy consumption for the proposed plant is about 0.1269 kWh/m3 for 47% of water recovery.
Keywords- Reverse Osmosis Process, Solar Energy, Specific Energy Consumption, Optimization