World Sanitation Why don t we all use composting toilets?

Transcription

1 World Sanitation Why don t we all use composting toilets? Chuck Henry Critical Practices LLC

2 Read

3 Sadly In 2002 alone, 3 million deaths were associated with sanitation-related water-borne communicable diseases (UNESCO-WWAP 2006)

4 So many reasons to care about sanitation! But the best so far

5 Has been the dignity that recipients now have!

6 2008 was the International Year of Sanitation Goal of reducing by half the proportion of people without access to basic sanitation by 2015 (that s only a goal of getting sanitation to 1,250,000,000 people ) But traditional WW treatment costs are astronomical!

7 Composting toilets (Can be) Simple, (can be) economical and low-impact sanitation systems Require no water Are usable in remote or difficult areas Can incorporate food waste and yield a usable soil amendment

8 In India UW students built four composting toilets for a 12-person dormitory

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10 In Costa Rica: for an educational center for sustainability

11 Then we had a better idea! The Poo Screw (The Earth Auger) Originally licensed by UW Tech Transfer

12 Our first in Costa Rica w/ UWB students

13 But it s mostly happened in Ecuador - with my partners, high school & university students Marcos Fioravanti Fundación in Terris

14 2010 UW Study Abroad in the Galapagos

15 2012 UW Study Abroad taken to the Andes

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17 Over the years It was too expensive at $250 Revise, redesign, rebuild Less pvc? Smaller diameter? Locally available materials?

18 Changes over the years First generation 2001

19 Second generation 2006

20 Third generation 2009

21 Fourth generation 2010

22 9 years! Really slow going! Who can afford to develop the concept in the first place? You need tools You need materials You need time! You really need money!

23 Funding was simply not Until available The Bill and Melinda Gates Foundation rocked the sanitation world by acknowledging its importance!

24 What they were looking for: Original and innovative ideas for technologies to support sustainable sanitation Innovations in non-conventional technologies Daring in premise No energy No water Nutrient capture

25 What we did to apply Made a 2 page proposal

26 What we got $100, years (to get paid for what we formerly had paid to do)

27 Fifth generation 2011

28 Sixth generation 2012

29 And the Deluxe! (Seventh generation 2012)

30 Our concept was selected for Phase II Funding! Small scale mass production 500! Demonstrations Evaluation And best of all $1,000,000!

31 Now going to production!!! How do you make 500 toilets? How do you make 1,000,000 toilets? And not go broke!

32 From hand production

33 To small-scale mass production - Polyurethane casting

34 How about this one!

35 Georgetow n Shop

36 Where we built 50+ & sent em to EC!

37 You may have seen this last year 8 th and 9 th generations!

38 50 down, 450 to go We decided that due to Relatively poorer quality than expected Cost a lot more than expected And was a WHOLE LOT OF WORK We d do injection molding Whew!

39 We went to China Less than half the cost And we were lucky and are working with a great team 650 on the ship!

40 Solids and cover material Toilet seat seal. Can also be used to divert water when washing. Urine Vent pipe: as the sun heats up the pipe, air is drawn away from the toilet seat. When closed, wash water goes down Compost chamber: holds up to 120 flushes. 10 th generation: How it works Compost exits into a black bucket for solar heating. Chamber for cover material. Handle flips sawdust, ash, etc. into toilet evenly over solids. Foot flush pedal: after use, one flush is required.

41 Installation

42 Making a change in the world one throne at a time with Dignity

43 And we re still thinking redesignin g, revising