*Desal WaterCraft Carrier originally conceived and posted November 1-16, 2005 on zulenet.com/electriceco/water_craft_carrier.html
Floating manouverable desalination powered by Renewable Energy Solar, Wind, Wave and Tidal Current with large-scale battery.
Oct 2007 update
Back in Nov 2005 I envisioned The Desal Watercraft Carrier as an alternative to a permanent desalination fixture... get a boat big enough to make it a portable desalination plant so it could move position to best serve the changing climate. The idea of making it portable as of 2007 seems somewhat less important as we, in Australia, prepare for permanent water restrictions.
The CSIRO forecasts less rain in Australia's future and having permanent land-based desalination plants to drought-proof our cities makes good sense. Switching on renewable energy sources like wind and solar to off-set CO2 produced is also sensible of course. Having said that, there are a number of value added reasons for Renewable Energy Power Desalination Watercrafts to flourish. It's still a good idea 2 years later, and the more one thinks about it, the more suitable the ocean is to mine a plurality of renewables, because only a ship on water can gather ocean renewables at the same time - because the desalination is ocurring at sea, the waves and ocean energy can be harnessed... and it's always NIMBY (not in my backyard)...
And definitely check out SEADOV Sustainable Energy and Desalination on Vessel.
Seadov puts it all together. Seadov announces March 27, 2007 "Eco-friendly desalination plant set to solve water woes."
In short: the idea of putting a large scale desalination plant on board a ship or vessel powered by renewables may turn out to be practical. So practical, that Australian company Seadov Pty Ltd "Sustainable Energy And Desalination On Vessel" is negotiating to deploy a real one, using solar, wind, wave and ocean currents capable of delivering potable water, large scale.
The placement of a large scale desalination plant in the middle of the ocean has distinct advantages over land based desalination - only at sea can we gather a plurality of renewable energy sources - like solar, wind, tide, current, OTEC [ocean thermal energy conversion] - and LTTD [low-temperature thermal desalination] - and this changes the playing field completely.
It's interesting to note, that none of the technology chosen to be deployed with Seadov is new or experimental, everything is tried and proven. What is new is the positioning. Some of us have heard the phrase "position position position" when refering to a successful formula for business - you wouldn't mill wheat in the middle of the ocean or open a bakery and sell bread - so why would you mill [desalinate] sea water on land? One very clear advantage is the waste sea water or brine is easily disposed at sea which is far more environmentally responsible and safe. SEADOV
And definitely check out WATER STANDARD
WATER STANDARD is a global water treatment company integrating desalination technology and ocean-based vessels, and is committed to being a leader in innovative ways to help solve the global water shortages. This growing crisis affects virtually every continent and is projected to leave billions of people without access to improved water supplies in the coming years.
The SDV™ adapts proven reverse osmosis (RO) technology, which has been used on military and cruise ships for years and combines it with proprietary technologies to offer a reliable and environmentally responsible alternative.
Although desalination was once perceived as too expensive an option for producing water, membrane costs and energy usage have dropped dramatically. WATER STANDARD takes advantage of these reduced costs and energy efficiencies to provide competitive pricing. WATER STANDARD
The Desal Watercraft has been included in "The Science of..." SURVIVAL YOUR PLANET NEEDS YOU exhibition at the Science Museum of London. Visit www.scienceof.com/survival
Another closet idea by John Zulaikha
1-16 Nov 2005
The drought affecting lifestyle change is on the march. The solution is water and Sydney Water is under enormous pressure to deliver. The solution is a desalination plant at Kurnell. My idea is to make it portable as on a boat so it becomes a more valuable resource later. Any green benefits are a plus.
Carrier is, but is not limited to, a large scale 3 or more tiered portable floating collector of wind
wave tide and solar energies with battery and reverse osmosis desalination plant on-board. Gathering power, storing power and making
day it might be able to roam
the seas searching for the best possible weather conditions gathering
the full potential, but typically it would be moored off the coast
eco energy for fresh water, re-charging, and pumping fresh water back
to the coast
And certain perceived disadvantages: