Diatomaceous earth (DE) spent cake from the filtration process,What happens to it? Is it an issue? Is it recyclable?
One of the few “myths” that you may hear about DE is that the spent cake produced in the filtration process is a problem. That it’s not recyclable. That you have to haul it away and that it all goes into a landfill. True or false?
Until fairly recently, this might have been true. But not any more. In the past few years, great progress has been made to take the DE spent cake and recycle it, for a variety of different uses.
One of the most recent examples of this is at Sonoma Compost, a certified organic compost facility who run the Organic Recycling Program on behalf of their County Waste Management Agency. Since 1993, they have successfully diverted approximately 1,460,000 tons of yard trimmings and wood waste from landfills. Sonoma Compost turns these materials into organic compost and mulch, recycled lumber and bio-fuel, all of which they sell at very affordable prices for agriculture, landscaping and gardening. They run a school gardening programme and consult on municipal composting.
Watch the video featuring EP Minerals Director of Commercial Sustainability, Andrew Welford : Recycling DE Spend Cake (compost)
At the moment, we’re running several DE spent cake recycling programs for customers, from a variety of different industries.