The Capital Regional District board has come up with a strategy for dealing with the end product of the region’s sewage treatment process that will make a priority of using the resulting biosolids for fuel.
The second tier, to be employed when the processing facility is not available, includes out-of-region options for biosolids, such as mine and quarry reclamation projects, forest fertilization and alternative-fuel combustion — which is a current practice at a cement manufacturing facility in Richmond.
Plant said the CRD is already working to deliver a pilot project to test the thermalization of the biosolids.“I think we need to demonstrate that it’s effective and then we need to be able to demonstrate to the province that it is an appropriate use of our biosolids,” he said.
The biosolids had been piling up at the facility at the rate of 10 tonnes a day when the Lafarge cement plant in Richmond was offline and unable to accept the material. The CRD does not consider landfilling biosolids an option, as it wastes space in the landfill and does not meet provincial requirements to find beneficial uses for biosolids.
That allowed the regional district to send biosolids to a gravel extraction quarry in Cassidy, where biosolids mixed with sand are being stored.The residual treatment facility at Hartland that produces thermally dried biosolids is run by Baltimore, Maryland-based Synagro Technologies, which is being sued by a group of Texas farmers, who claim fertilizer made from biosolids is making them sick and killing their animals.
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