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Lunch and Learn: Saving energy with staged reverse osmosis

  • 1-135 33 Massachusetts Avenue Cambridge, MA, 02139 United States (map)

About one in eleven people (660 million) still lack access to clean drinking water. Freshwater scarcity is projected to grow due to increased water demand and current climate change forecasts. As reverse osmosis (RO) has improved, coastal populations have been able to turn to desalination as a solution to their freshwater problems. A vast majority of the cost of RO water is due to capital costs and energy consumption, making it prohibitively expensive in some places. Since many RO plants are powered by fossil fuels, high energy consumption has an environmental cost as well. One option to reduce this cost is through innovations in process design. We accomplish this by splitting the standard single-stage RO system into two stages. We evaluate the energy savings achieved by moving from a single-stage RO system to an optimized two-stage RO system of equal size and productivity.

Lunch will be provided!

Earlier Event: October 12
Water Innovation Prize Kick-off Dinner
Later Event: November 4
Workshop by CUAHSI