Difference between revisions of "How to Make a Coffee-Clay Water Filter"
From Howtopedia - english
| (15 intermediate revisions by 6 users not shown) | |||
| Line 1: | Line 1: | ||
Water-borne, diarrhoea-causing bacteria, such as E. coli, kill 1.6 million people every year. | Water-borne, diarrhoea-causing bacteria, such as E. coli, kill 1.6 million people every year. | ||
| − | == | + | ==A cheap and simple water filter that Anyone can make Anywhere== |
| Line 7: | Line 7: | ||
But fired clay alone is too dense to let the water pass at a desirable pace. Therefore some organic material is being added to increase the porousity: | But fired clay alone is too dense to let the water pass at a desirable pace. Therefore some organic material is being added to increase the porousity: | ||
| − | Organic material - like used coffee grounds, grounded rice husk, tea leaves or straw... - will would burn up in the firing process and leave tiny holes in the clay. | + | Organic material - like used coffee grounds, grounded rice husk, tea leaves or straw, papier-maché... - will would burn up in the firing process and leave tiny holes in the clay. |
Clay and Grounded coffee are materials widely available around the world. | Clay and Grounded coffee are materials widely available around the world. | ||
| − | *Mix equal parts: One handful of clay, one handful of coffee grounds, for exemple from a collecting bin at the local coffee shop. Mix with enough water to form a thick biscuit like paste and form a cylindrical recipient with this paste | + | *Mix equal parts: One handful of clay, one handful of coffee grounds, for exemple from a collecting bin at the local coffee shop. Mix with enough water to form a thick biscuit like paste and form a cylindrical recipient with this paste. The walls of the filter should be as thick as an adult's index. |
*Leave it in the sun to dry. | *Leave it in the sun to dry. | ||
| − | *fire the clay with cow manure: a dung fire burns at around 950 degrees C - | + | *fire the clay with cow manure: pack the pots in dry straw, and after you lay them on a first layer of dry cow dung, cover them with it completely. |
| − | It takes about an hour of baking in the dung to fire the filter | + | A dung fire burns at around 950 degrees C - the right temperature for firing clay. The filters should turn bright orange during the firing process and stay so for 30 min.<br> |
| + | It normally takes about an hour of baking in the dung to fire the filter. | ||
| − | + | The bacteria are slightly bigger than the pores of clay and get trapped in the clay. The coffee increases the porosity and the contact surface of the clay.<br> | |
Lab tests showed that the clay and coffee combination works well: | Lab tests showed that the clay and coffee combination works well: | ||
| − | + | it takes one to two hours to filter one litre of water, and the coffee-clay filter removes up to 99.8 percent of bacteria in water. | |
| + | ==Contact== | ||
| + | Mr. Tony Flynn<br> | ||
| + | Department of Engineering, | ||
| + | Faculty of Engineering & Information Technology,<br> | ||
| + | The Australian National University, Canberra ACT 0200<br> | ||
| + | '''Telephone:''' +61 2 6125 0078 FAX: +61 2 6125 0506<br> | ||
| + | '''Website:''' [http://info.anu.edu.au/mac/Media/_pdf/ClayPotFilter_final_web.pdf ClayPotFilter_final_web.pdf]<br> | ||
| + | [http://info.anu.edu.au/mac/Newsletters_and_Journals/ANU_Reporter/098PP_2005/_004PP_Autumn/_water.asp http://info.anu.edu.au] | ||
| + | |||
| + | ==Related Articles== | ||
| + | *[[How to Filter Water with a Sand Filter]] | ||
| + | *[[How to Lower Water Turbidity with a Roughing Filter]] | ||
| + | *[[How to Pasteurize Water with a Plastic Bottle]] | ||
| + | *[[Water Supplies for Food Processing]] | ||
| + | *[[How to Purify Water with Moringa Seeds]] | ||
| + | *[[How to Purify Water With Solar Distillation]] | ||
| + | *[[How to Improve Water Quality Using Vetiver Grass]] | ||
| + | |||
| + | ==Categories== | ||
| + | [[Category:Water]] [[Category:Food Processing]] [[Category:Health]] [[Category:Hygiene]] [[Category:Ideas]] [[Category:Equipment Design]] [[Category:Small Business]] [[Category:Products]] [[Category:Cooling]] [[Category:Waste]] [[Category:Sanitation]][[Category:Recycling]] | ||
| + | [[Category:Application]] | ||
| + | [[Category:Easy]] | ||
| + | [[Category:Less than 10 US$]] | ||
| + | [[Category:One Person]] | ||
| + | [[Category:Global Technology]] [[Category:Rural Environment]][[Category:Urban Environment]] [[Category:Montaneous Environment]] [[Category:Forest Environment]] [[Category:Temperate Climate]] [[Category:Mediterranean Climate]][[Category:Tropical Climate]] [[Category:Arid Climate]] [[Category:Monsoon Climate]] [[Category:Prevention]] | ||
| + | [[Category:Clay]] [[Category:Coffee]] [[Category:Sawdust]][[Category:Paper]] | ||
| + | [[Category:Stub|Stub]] [[Category:howtopedia requested images]] [[Category:howtopedia requested drawings]] | ||
| − | + | [[Es:Como purificar el agua con un filtro de arcilla y café]] | |
| − | + | [[fr:Comment fabriquer un filtre à eau en argile pour le café]] | |
| − | |||
| − | [ | ||
Latest revision as of 11:50, 30 January 2014
Water-borne, diarrhoea-causing bacteria, such as E. coli, kill 1.6 million people every year.
Contents
A cheap and simple water filter that Anyone can make Anywhere
Those filters are made from clay because it's easy to use and most importantly... it's free.
But fired clay alone is too dense to let the water pass at a desirable pace. Therefore some organic material is being added to increase the porousity: Organic material - like used coffee grounds, grounded rice husk, tea leaves or straw, papier-maché... - will would burn up in the firing process and leave tiny holes in the clay.
Clay and Grounded coffee are materials widely available around the world.
- Mix equal parts: One handful of clay, one handful of coffee grounds, for exemple from a collecting bin at the local coffee shop. Mix with enough water to form a thick biscuit like paste and form a cylindrical recipient with this paste. The walls of the filter should be as thick as an adult's index.
- Leave it in the sun to dry.
- fire the clay with cow manure: pack the pots in dry straw, and after you lay them on a first layer of dry cow dung, cover them with it completely.
A dung fire burns at around 950 degrees C - the right temperature for firing clay. The filters should turn bright orange during the firing process and stay so for 30 min.
It normally takes about an hour of baking in the dung to fire the filter.
The bacteria are slightly bigger than the pores of clay and get trapped in the clay. The coffee increases the porosity and the contact surface of the clay.
Lab tests showed that the clay and coffee combination works well:
it takes one to two hours to filter one litre of water, and the coffee-clay filter removes up to 99.8 percent of bacteria in water.
Contact
Mr. Tony Flynn
Department of Engineering,
Faculty of Engineering & Information Technology,
The Australian National University, Canberra ACT 0200
Telephone: +61 2 6125 0078 FAX: +61 2 6125 0506
Website: ClayPotFilter_final_web.pdf
http://info.anu.edu.au
Related Articles
- How to Filter Water with a Sand Filter
- How to Lower Water Turbidity with a Roughing Filter
- How to Pasteurize Water with a Plastic Bottle
- Water Supplies for Food Processing
- How to Purify Water with Moringa Seeds
- How to Purify Water With Solar Distillation
- How to Improve Water Quality Using Vetiver Grass
Categories
Categories:
- Water
- Food Processing
- Health
- Hygiene
- Ideas
- Equipment Design
- Small Business
- Products
- Cooling
- Waste
- Sanitation
- Recycling
- Application
- Easy
- Less than 10 US$
- One Person
- Global Technology
- Rural Environment
- Urban Environment
- Montaneous Environment
- Forest Environment
- Temperate Climate
- Mediterranean Climate
- Tropical Climate
- Arid Climate
- Monsoon Climate
- Prevention
- Clay
- Coffee
- Sawdust
- Paper
- Stub
- Howtopedia requested images
- Howtopedia requested drawings
