Published in: 2013
University of Toronto, Toronto, Canada
Cheng, Y.-L., Saunder, S.
Location of library entry
This library entry contains background documents for a grant that Yu-Ling Cheng (PI) and Stephen Sauder (PM) are leading and which is funded by the Bill and Melinda Gates Foundation.
Further information and a discussion is available on the SuSanA discussion Forum, see link below.
Short description of the project:
To describe how it works, one needs to follow the process from beginning to end: the waste is collected through a squat-style toilet (the target market is Asia and Africa, where such toilets are common). Waste will then be separated into liquid and solid streams using standard de-watering techniques. Disinfection of the solid stream will proceed by means of smouldering, a flameless combustion process similar to what occurs inside of a coal barbecue. For the liquid stream, a sand / UV filter will be used. We are still in the process of narrowing design pathways with a potential for a different unit approach to liquid disinfection.
The goal of this project is to develop a technology for treating solid waste streams through mechanical dehydration and smoldering that will sanitize feces within 24 hours. We also intend to develop a method for sanitizing urine through membrane filtration and ultraviolet disinfection. Essentially we are building a household scale wastewater treatment plant.
Start and end date: June 2011 until 31 January 2014
Research or implementation partners: Western University and University of Queensland
Fishman, Z., Mee Y., Jung, T., Pironi, P., Krajcovic, M., Melamed, S., Webb, M., Torero, J. L., Gerhard, J. I., Diosady, L. L., Lawryshyn, Y., Edwards, E., Kortschot, M. T., Cheng, Y. L.
Documents available for download below:
1 - A unit operations approach for rapid disinfection of human waste based on drying/smoldering of solid and sand filtration/uv disinfection of liquid waste (presentation at FSM2 Conference in Durban, South Africa, Oct. 2012)
2 - A household sanitation process based on integrated diversion/dewatering, drying/smoldering of solid waste, and pasteurization of liquid waste (presentation at FSM3 Conference in Hanoi, Vietnam, Jan. 2015)
Cheng, Y.-L., Saunder, S. (2013). A unit operations approach for rapid disinfection of human waste based on drying/smoldering of solid and sand filtration/uv disinfection of liquid waste - Various documents on results from research grant. University of Toronto, Toronto, Canada
Asia & Pacific English Fundamental research and engineering North America
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