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Testing new use for sludge at sewage plant in Delta

Metro Vancouver says the emerging technology could revolutionize wastewater treatment
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The demonstration facility is to allow Metro Vancouver to test and optimize the hydrothermal processing performance, evaluate its integration with existing wastewater treatment plant processes and analyze the business case before recommending a subsequent scale-up for permanent implementation. Metro Vancouver report

A demonstration-scale project for a new use of bio-mass will be constructed at the Annacis Island Wastewater Treatment Plant in Delta.

Metro Vancouver’s Liquid Waste Committee recently endorsed a staff recommendation to approve contract awards of the second and third phases of a new hydrothermal processing demonstration plant, which is to produce low carbon transportation fuels from wastewater biomass while offering environmental and economic benefits to wastewater treatment.

The regional district wants to evaluate the emerging technology before recommending a subsequent scale-up for permanent implementation.

Hydrothermal processing converts biomass into biocrude that is then refined into low-carbon transportation fuels.

“This emerging technology could revolutionize wastewater treatment by replacing traditional solids management with an alternative that incurs lower costs, has a smaller footprint, reduces lifecycle greenhouse gas emissions, alleviates the pressures of managing increasing biosolids quantities, and destroys compounds of environmental concern,” a report to the committee notes.

Last year, the regional district awarded a contract for a progressive design-build to Merrick Canada.

The initial award amount was $1,64 million for Phase 1, the detailed design phase.

The contract contained provisions to award Phase 2, fabrication, delivery and commissioning, and Phase 3, operational support and post construction services.

The report notes Merrick completed the Phase 1 services and submitted a proposal for Phase 2 and 3 services. It was recommended that the Greater Vancouver Sewage and Drainage District’s board approve the award of the next phases to Merrick in the amount of $16.4 million, exclusive of taxes.