Perth Cleaning up Tay River
Published on by Water Network Research, Official research team of The Water Network in Business
The Goal is to Reduce the Amount of Solids that Enter the Tay River from 2,000 mg of Solids per litre per day to Less Than 15 mg of Solids per litre per day
The company, which moved its headquarters from Eganville to Renfrew in September, is leading a design-build contract for the Town of Perth's water treatment plant residuals facility.
The goal is to reduce the amount of solids that enter the Tay River. Perth's old system was discharging up to 2,000 mg of solids per litre per day into the river. Bishop Water Technology says its treatment process, which uses the Geotube system, will reduce that amount to less than 15 mg of solids per litre per day.
This would ensure that more than 300 dry metric tons of solids will be diverted from the Tay River per year.
The Geotube dewatering solution works in three stages.
As sludge in pumped into the tube, it is mixed with a polymer that separates solids from the liquid. Filtered effluent flows through a dual filament polypropylene fabric, keeping solids trapped inside the container. Filtrate can then be directed to a lagoon or wastewater treatment facility.
The remaining solids retain up to 100 per cent of chemicals and metals. During consolidation (of two to 12 months), solids decrease due to further dewatering and composting. Remaining sludge can be used in landfills or in topsoil applications.
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