[permaculture] Pure Water Revolution- NOT
dhondt at eircom.net
Tue May 8 15:41:50 EDT 2012
Just a few thoughts.
First of all it might be a good idea to make a water filtering devise where
a community gets its dirty water instead of letting every household do it's
own thing. It is not easy to make an effective water filtering devise on a
very small scale except that one can of course sell more units.
If pathogens are the problem with dirty water it might be a good idea to use
a hay or straw bed/layer first because there an ecosystem of cilliates can
develop that eats bacteria. Below that layer of sand followed by a layer of
charcoal would be a good follow up to that.
Distilling water is a hugely costly business in terms of energy and
inpractical I think unless direct solar heating could be used. Even then, it
will be hard going to produce enough water for a family to drink. The system
you describe with extracting water from vegetation by means of a plastic
sheet and a cup can indeed produce a cup of water after a few hours but even
a small family of four will need at least ten liters per day and that system
can not provide that.
> With all due respect, this is a well meaning project but it relies on the
> same thinking and approach as most NGO's use, and is actually a band-aid
> as he claims other methods are. Is it really empowering people to provide
> themselves clean water, or is it merely promoting the current paradigm
> that the 3rd world be reliant on the first world to help them?
> How much does the unit cost? Certainly more than the intended recipients
> can afford, therefor the project will rely on donors to support it. Where
> is it built? It is manufactured from refined materials that are hard to
> come by in non-industrialized areas. It is likely that this unit would be
> dismantled and used for something else in extremely poor areas.
> Also- it relies on boiling the water in order to distill it. This means
> that people will need either gas stoves or firewood to get clean water,
> further exacerbating the issue of affordability and the problem of
> deforestation. What about solar distillation which can be achieved with a
> sheet of plastic, a cup, and vegetation? Would it be more empowering to
> teach people the PRINCIPLES of water filtration as opposed to selling a
> pre-fabbed unit?
> Same model, not a real solution. It actually makes me angry as this is an
> ignorant approach to aid, though I realize the project means well and is
> intended to address possibly the most pressing issue facing the world,
> clean water. It may be suitable for certain situations though it would
> not be in many.
> There are many complicated issues to creating truly lasting and
> sustainable solutions to the water crisis, this site attempts to address
> Our organization has attempted small scale water filtration projects so I
> have a little experience with
> I do not have the answers but I have been asking questions-
>> Date: Mon, 7 May 2012 18:48:02 -0400
>> From: venaurafarm at bellsouth.net
>> To: permaculture at lists.ibiblio.org
>> Subject: Re: [permaculture] Pure Water Revolution
>> On 5/7/2012 5:53 PM, Marjory wrote:
>> > There is a some really nice work being done to develop, small, rugged,
>> > drinking water stills to alleviate the crisis from lack of clean water.
>> > Check out:
>> > http://www.purewaterrevolution.org/
>> > Cheers,
>> > Marjory Wildcraft
>> Excellent. We need mopre of this. I understand the Berkey filters are
>> very good.
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