Hi great topic.
I would love to see some pics of designs to build a basic water fitler system. Also what sand should I buy, BPA free containers for sure, do you just pour the water in top and collect the clean at the bottom? Details and the more the better.
I am thinking about collecting rainwater and then filtering. I dont want chemicals. I dont mind the idea of UV light, How does it work with this parabolic dish. I liked the lifestraw idea. 20 bucks for 1000 litres. Not bad. Anyway when I build my green cottages I want to catch and clean my water so this link is very important please dont stop.
Jay McReed wrote:The solution given below is not for portable or instant uses. But it's the best solution I've seen for a home or other permanent installation...
- Low cost
- Low tech - you can build it yourself
- Low maintenance
- No consumables like filters to keep replacing
- Tested more than 10 years in the real world
- The main concern I've read is lack of minerals in the water, but you can get easily get the minerals your body needs from other sources, example eating vegetables
- In temperate winters the same method can be powered by fuel
Here are the links:
Presentation with some water quality analysis and cost/gallon: http://www.epsea.org/borderpact.pdf
10-year test results: http://solar.nmsu.edu/publications/1437ISESpaper05.pdf