Transcript WATER
WATER engineering a better world According to the UN Approximately 1.1 billion people still do not have access to improved drinking water in 2005 By 2025, it is estimated that about two thirds of the world's population - about 5.5 billion people - will live in areas facing moderate to severe water stress Appearances can be Deceiving! Appearances can be Deceiving! Why do we need Water? World Water distribution Why do we need a Good Water Supply System? Possible Solutions to Water Supply Issues 1. RAM PUMP / HYDRAMS Possible Solutions to Water Supply Issues 1. RAM PUMP / HYDRAMS • Inexpensive • Few moving parts • Use the waters inherent energy Cons: Can only be used in limited scenarios Possible Solutions to Water Supply Issues 2. THE AQUADUCT Possible Solutions to Water Supply Issues 2. THE AQUADUCT http://www.youtube.com/watch?v=-U-mvfjyiao Is that water clean? Is that water clean? Child collecting drinking water in Cambodia Is that water clean? Child drinking water in Honduras, Central America Is that water clean? http://www.youtube.com/watch?v=77Mv8pauMKc&eurl=http%3A%2F%2 Ftheinspirationroom.com%2Fdaily%2F2008%2Fworld-vision-dirty-wateronline%2F&feature=player_embedded Is that water clean? There are many filter and solar distillation based technologies designed to provide clean drinking water to people: 1. Ceramic / Clay Filter 2. Life Straw 3. Water cone Child drinking water in Sudan Ceramic Filters Life straw Water Cone Floating Islands SOME TIPS First note down all the essence of the problem. Remember: • You want to deliver potable water to people living on floating and stilt buildings. • The water level changes with the season (wet and dry) • Where will you have everything located: floating, on a stilt, stuck to the house, etc? • Imagine a simplistic case involving you sitting at the top of a buoy in the Indian ocean (maybe in the Perth harbour area or some place you’re familiar with). How can you send water up to where you are? The water level changes with the tides? The ocean water is plenty but I doubt you want to drink it as it is! SOME TIPS • Transfer the thought process you had in the simplistic and familiar case to the Tonle Sap area • You don’t have to tackle both the water treatment and water supply issues for the Challenge, you can pick one (but both would be great). Remember to consider economic, community and environmental impacts of your design wherever possible when designing (TRIPLE BOTTOM LINE). Questions? Activity: Make your own water filter In country groups, • Decide what to do • Buy materials • Make filter • Test filter • Present to class How does the activity relate to the real world? Activity Real World Different amounts of money per group • Based on actual country’s Gross Domestic Product (GDP) Illegible instructions • Based on actual country’s illiteracy rate • Lack of education and access to information Resourcefulness of groups with little money • People in poorer countries have their own coping mechanisms Collaboration between countries • North-South co-operation • Richer countries formed the G8 and OECD • Poorer countries formed the Group of 24 Useful Links 1. RAM PUMPS • http://www.lifewater.ca/ram_pump.htm • http://www.bae.ncsu.edu/programs/extension/publicat/wqw m/ebae161_92.html • http://www.clemson.edu/irrig/Equip/ram.htm • http://home.att.net/~africantech/ESME/hydram2/HydRam2. htm • http://www.theramcompany.com/ • http://www.itdg.org/docs/technical_information_service/hydr aulic_ram_pumps.pdf Useful Links 2. AQUADUCT • http://science.howstuffworks.com/earth/greentechnology/remediation/aquaduct-filtrationvehicle.htm/printable 3. CERAMIC FILTER • http://www.rdic.org/waterceramicfiltration.htm • http://www.worldchanging.com/archives/002738.html Useful Links 4. LIFESTRAW • http://www.vestergaard-frandsen.com/lifestraw.htm • http://express.howstuffworks.com/lifestraw2.htm 5. WATER CONE • http://www.mage-watermanagement.com/ 6. BIOHAVEN FLOATING ISLANDS • http://www.youtube.com/watch?v=v0TiKkbbNxI • http://www.floatingislandinternational.com/fi_pages.php?name=m30 • http://patriotlwm.com/patriot-lwm-and-biohaven-floating-islands/ Useful Links 7. WATER ORGANISATIONS (Continued) • • • • • • • • http://water.org/facts/ http://www.treehugger.com/ http://www.rdic.org/home.htm http://www.worldvision.com.au/ourwork/Solutions/WaterHe althLife.aspx http://aquaclara.org/what-we-do/the-challenge-of-cleanwater/ http://www.livelearn.org/projects/p02_adbvideo.asp http://www.worldwater.org/data.html http://www.worldbank.org/depweb/english/modules/enviro nm/water/index.html