Reinvented Toilet Phase 4

2017 - 2019 • University of Toronto


To test the smoldering Reinvented Toilet prototype, and to support the subsequent design, build, and testing of multiple engineering validation units for foreign field testing.


Building on progress made to date for an energy efficient, cyclic-continuous household sanitation process based on liquid/solid separation or dewatering, in situ drying, smoldering and post smoldering catalytic conversion of solid excreta, and heat pasteurization of liquid waste, work during this phase will focus on continuing process simplification, improving reactor thermal performance, reducing mechanical complexity, improving robustness, learning about and addressing user behavior, identifying and engaging manufacturing and commercialization partners, and incorporating their input to reduce cost and productize our technology.

Countries of activity

Location of main activity


The goal is a commercially viable sanitation appliance that will be ready for commercial production development.

This grant will be used to continue the development of an integrated household scale sanitation appliance – towards multiple site field studies and towards commercialization.

Further information

This effort supports the BMGF strategy to improve sanitation in the developing world by developing “next-generation” toilets for households, communities and schools.

Research or implementation partners: STeP and Sankoya

Contact information

Yu-Ling Cheng
Login to see the e-mail-adress of the contact person.

Filter tags

Bill & Melinda Gates Foundation Fundamental research and engineering Global North America Product design and engineering Toilets or urinals (user interface) University, education or research institution

Attached files

Project overview sheet (July 2018)

Format: pdf file
Size: 0.19 MB


Uploaded by:
Elisabeth von Muench (Elisabeth)

Share this page on    

Follow us on    

SuSanA Partners  currently 362 partners

Show all partners »

Sanitation events

SuSanA newsletter

Stay informed about the activities of SuSanA and its partners. The SuSanA newsletter is sent out around four times per year. It contains information about news, events, new partners, projects, discussions and publications of the SuSanA network.

Subscribe to newsletter »

Latest tweets mentioning SuSanA

Tweets mentioning SuSanA »

30th SuSanA meeting

The 30th SuSanA meeting - the first virtual of its kind - took place from August 17th to August 28th 2020. It was organised by the SuSana Secretariat with support and contributions from SuSanA Partners, Members, Working Groups and Regional Chapters.

Click here to get to the Meeting Page!

SuSanA meetings





Resources and publications

Our library has more than 3,000 publications, factsheets, presentations, drawings etc. from many different organisations. It continues to grow thanks to the contributions from our partners.

Add item to library »

The three links below take you to special groups of items in the library for more convenient access:


The project database contains nearly 400 sanitation projects of many different organizations dealing with research, implementation, advocacy, capacity development etc. Advanced filtering functions and a global map are also available. Information on how and why this database was created is here.

People working for SuSanA partners can add their own projects through their partner profile page. You might need your SuSanA login upgraded for this purpose. Please contact us if you would like to add a project.

Trainings, conference and events materials

Missed important conferences or courses? Catch up by using their materials for self study. These materials have been kindly provided by SuSanA partners.

Regional chapters

Use the map or the search tool to access the most relevant information and knowledge products for your region or country. This includes relevant resources, events, partners or projects.

Shit flow diagrams (SFDs), excreta flow diagrams

Shit flow diagrams (SFDs) help to visualize excreta management in urban settings. Access SFDs and more through the SFD Portal.




Discussion forum

Share knowledge, exchange experiences, discuss challenges, make announcements, ask questions and more. Hint: Your discussion forum login is the same as your SuSanA login. More about the forum's philosophy »

Integrated content

We are hosting content from some other communities of practice and information-sharing portals. This section also provides a link to SuSanA's Sanitation Wikipedia initiative.

Suggest content to add »

SuSanA partners

Not yet a SuSanA partner? Show your organisation's support to SuSanA's vision and engage in  knowledge sharing by becoming partners.

Apply to become a partner »

Individual membership

Register as an individual member of SuSanA free of charge. As a member you can interact with thousands of sanitation enthusiasts on the discussion forum.  You can also get engaged in one of our 13 working groups and our regional chapters. Our FAQs explain the benefits further.

By getting a SuSanA login you can fully participate in the SuSanA community!

Register as a member


Forgot your password?