Canada: The Greater Vancouver Water District (GVWD) has struck a deal with Lafarge Canada to sell drinking water treatment residuals to the Richmond cement plant for use in cement production. The contract is for a three-year agreement up to a total cost of just under US$1m, according to Postmedia News. The deal follows a 12-month industrial trial that started in mid-2016.
The residuals will be used as a substitute for shale in the production process. Around 10,000t/yr of residuals will be used to replace 2100t/yr of red shale and conglomerate that are currently supplied from a quarry at Sumas Mountain, Abbotsford. The use of residuals doesn’t affect the plant’s Air Quality Permit following stack tests. As part of the agreement Lafarge will need to build additional storage capacity at its plant.