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Sunday
Jan232011

Water prices should be trending downwards, not upwards

http://twit.tv/gtt18 - Green Tech Today 18: Oasys Water.
Aaron Mandell, CEO's aim is to get the price down to as low as $0.25 per cubic meter. He says current processes (where energy costs are often subsidised) range from $0.65-$1 per cubic meter for current desalination.

How? Using some clever thermodynamics and chemistry at scale.
Why? The Oasys process in practice uses 1/3 to 1/2 of the energy of currently in use methods (with theoretical potential for 1/10 of the energy), primarily because it can use normal osmosis rather than reverse osmosis.

http://hypertextbook.com/facts/2004/JosephSabatelle.shtml - New York Water Prices
A little math - 1kL = 1 cubic meter. So $0.000537 per liter = $0.537 per kL (cubic meter)

http://www.sydneywater.com.au/Publications/FactSheets/UsageCharges.pdf#Page=1 - Sydney Water Usage Charges. $2.012 per kL, a big piece due to the cost of the Kurnell Reverse Osmosis Desalination Plant.
http://en.wikipedia.org/wiki/Kurnell_Desalination_Plant

I wonder if in 5-10 years this process could be retrofitted into existing plants for big potential savings as well?
Rob McGinnis, CTO and co-founder says the "plants are modular building blocks" so they should be scalable down as well as up - perhaps for use by farmers near saline aquifers? These are in addition to the other applications - industrial waste reuse, and even a new form of hydroelectric power.

In any case I think this is pretty amazing that some clever salts and thermodynamics could become a huge piece of the solution to the world's water issues.

Explore more:
http://www.oasyswater.com/press.php

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Reader Comments (1)

great posts!

June 5, 2013 | Unregistered Commenterwater ionizer

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