faecal waste
Artist impression of the Naivasha Treatment Plant, Kenya. Credit: Stantec

Design plans for a faecal waste facility, the Naivasha Treatment Plant (NTPx), in Kenya have been unveiled by Stantec, a global design and engineering firm.

The 2-in-1 design is an innovative concept for the treatment of faecal waste and sludge treatment while generating sustainable biomass fuel.

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Once complete, the 145,000 sq. ft. facility will convert over 7,000 cubic feet of seepage daily into Grade A biosolids. The resulting biosolids will be used to produce 1,200 tons of biomass briquettes per month.

NTPx is the first city-wide faecal sludge treatment plant in the East African country and is developed by Sanivation, a Kenyan-based firm creating sanitation systems that improve the environment and well-being of residents.

The facility is partly funded by a grant from the US Agency for International Development (USAID).

The project will provide a cost-effective and sustainable sanitation solution to a community of more than 350,000 residents while helping protect the local environment.

By selling these briquettes to local industries for commercial fuel, the project will play a significant role in offsetting deforestation in Kenya.

“The finalisation of project design marks a notable milestone in our mission of delivering financially viable sanitation services,” said Emily Woods, one of the co-founders of Sanivation.

Stantec has provided engineering and advisory services for the design of the project. The team worked closely with Sanivation to deliver a strategy that balances operational and engineering design criteria with that of the treatment plant’s overall business model.

The company’s engineers, based in North America and Europe, collaborated with engineers in Kenya to provide capacity building on the design and maintenance of such facilities for long term project success.

“There is great potential in leveraging a circular economy to the benefit of our communities around the world,” said Eric Rawdon project manager with Stantec’s International Development Group. “With this project design, the residents of Naivasha will have much-needed access to a financially stable sanitation solution that also helps the environment.”