PURO: reverse osmosis in a well

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PURO reverse osmosis in a well
Bas Heijman


23 January 2015
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Department of Water Management Section Sanitary
engineering
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Content

• Introduction reverse osmosis
• Brackish water sustainable source for drinking
  water
• Energy aspect of reverse osmosis
• Is infiltration of concentrate sustainable?
• Conclusions
• Other research into sustainable drinking water
  production

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Introduction reverse osmosis
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Content

• Introduction reverse osmosis
• Brackish water sustainable source for drinking
  water
• Energy aspect of reverse osmosis
• Is infiltration of concentrate sustainable?
• Conclusions
• Other research into sustainable drinking water
  production

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Brackish water sustainable source for drinking
water
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Brackish water sustainable source for drinking
water
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Brackish water sustainable source for drinking
water
Micropollutants
Water gt 100 years in sub surface
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Brackish water sustainable source for drinking
water
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Brackish water sustainable source for drinking
water

• Option 1 discharge to channel
• Option 2 discharge to sea
• Option 3 infiltrate in the subsurface

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Brackish water sustainable source for drinking
water

• RO submerged in a well
• Hydrostatic pressure about 7 bar
• No feed pump needed
• Cross flow pump about 1 bar
• Permeate pump about 7 bar
• Extraction brackish water above RO
• Infiltration concentrate (2x) beneath RO

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Energy aspect of reverse osmosis
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Energy aspect of reverse osmosis

• PURO 40 energy savings compared to normal
  brackish water RO
• Both RO