Naked Science Forum

Life Sciences => The Environment => Topic started by: elegantlywasted on 03/02/2009 23:13:31

Title: How does one filter water on a relatively large scale?
Post by: elegantlywasted on 03/02/2009 23:13:31

Hey guys,

Well the subject line pretty much says it all but I'll give some more background.

For school I have to give a speech about water saving techniques used in greenhouses and nurseries. The best way to do this is through a capture and recycle program. However I know I will be asked about nutrient run off and I wanted some info on filtering water. I remember seeing it done in science fairs when I was a kid, but I don't remember a lot about or, nor do I know the first thing about doing it on a large scale basis. Any help would be greatly appreciated. Thanks!!!

Title: How does one filter water on a relatively large scale?
Post by: Chemistry4me on 03/02/2009 23:22:06

You talking about something like this (http://www.fullertime.com/fuller/waterfilter/fullerswaterpurifier.html)?

Title: How does one filter water on a relatively large scale?
Post by: Chemistry4me on 03/02/2009 23:23:04

Or this (http://saltaquarium.about.com/cs/makeupwater/ht/htdiytapfilter.htm)?

Title: How does one filter water on a relatively large scale?
Post by: elegantlywasted on 03/02/2009 23:48:03

Sort of, but on more of a 10,000L or so per week sort of scale....

Title: How does one filter water on a relatively large scale?
Post by: lancenti on 04/02/2009 02:09:55

Large-scale desalination of sea water to produce distilled water: The Water Theatre

http://www.worldarchitecturenews.com/index.php?fuseaction=wanappln.projectview&upload_id=497

and

http://dsc.discovery.com/videos/building-the-future-water-theater.html

Large-scale purification of that-which-used-to-be-pee: NEWater

http://www.pub.gov.sg/newater/PlansforNEWater

--

For the Water Theatre, the principle behind it is that only pure water evaporates and so if you just condense it, you get pure water.

For the NEWater, I believe they use reverse osmosis but I'm not too sure.