The document discusses a case study of designing sustainable sanitation options for floating communities in Cambodia. Engineers Without Borders and Live and Learn Environmental Education partnered to develop affordable toilet designs using local materials that treat waste onsite through processes like desiccation and storage. Their goal was to create culturally appropriate and sustainable sanitation solutions. One design they trialed was a three-hole urine diversion desiccation toilet that collects feces dry and stores it with ash for 6 months while diverting urine and wash water. They also built a floating waste management station to trial different treatment methods and integrate waste processing with energy and food production, such as a floating garden trial. Their end goal is a commercially sustainable sanitation system for floating and

1. Designing for Sustainable Sanitation: floating toilet case study Judy Hagan Michael Brown Engineers Without Borders Australia Live and Learn Environmental Education

2. Designing for Sustainable Sanitation Sustainability of affordable sanitation Affordability of sustainable sanitation Sandy soils, high water tables flooding and floating housing We are not done with sanitation design

3. Floating Communities of Tonle Sap 5

4. Tonle Sap Floating Toilet Project Use this slide as a template for your presentation Presentation Tmplate

5. Design Approach Goal was to develop sanitation options that are: culturally appropriate, affordable, sustainable Design requirements: local production, local materials and expertise Holistic considerations from the start: gendered, considered whole of cycle, always working towards self-sustaining market delivery

6. Toilet Design Process

7. 3 Hole Urine Diversion Desiccation Toilet (UDDT) Faeces collected dry in bucket, ash added, stored for 6 months Urine diverted Wash water diverted - from menstrual hygiene and anal cleansing Consumables: soap, ash, water Materials: cement, bowl from market as cover, pvc pipe, reused buckets, wood or metal frame constructed locally Cost: ~35USD

8. Floating Community Waste Management Station Built as a demonstration of what is achievable within the Tonle Sap Environment. Designed to: Act as platform for trials of several different treatment methods. Integrate with energy and food production. Desiccation and storage waste treatment process currently under trial.

10. Floating Garden Community lead trial using common vegetables. Using the waste management station as a foundation for trial.

12. End Goal: Sustainable sanitation for floating communities(and other communities in Challenging Environments) Community lead design and trial UDDT using local materials and methods Waste treatment linked with energy and food production Commercially sustainable   Under trial Foundation in place

13. Partners and Donors Cambodian Ministry of Rural Development Engineering Institute of Cambodia Royal University of Phnom Penh