Integrating Wastewater Reclamation into Sustainable Water Use: A Feasibility Analysis for a Canadian City
Volume 6 , Number 2, March 2010 - Paper 8 - pp. 190-220
THIRUVENKATACHARI VIRARAGHAVAN1, ASHREF DARBI2 and YEE-CHUNG JIN11Faculty of Engineering, University of Regina, Regina, Saskatchewan, Canada, S4S 0A22KGS Group, Consulting Engineers, Regina, Saskatchewan, Canada.
(Received on November 07, 2007, revised on August 05, 2009)
Demands on water resources for household, commercial, industrial, and agricultural purposes are increasing greatly, and growing urbanization exacerbates the situation. Responsible water use is an integral part of sustainable communities. The use of reclaimed water for industrial use represents a significant potential market for reclaimed water in the City of Regina. Saskatchewan, Canada. The concept of reusing the Regina Wastewater Treatment Plant (RWWTP) effluent for cooling water and process water in industries in Regina may be economically attractive and sustainable. Preliminary investigation showed that the RWWTP effluent quality is generally not much different than the City of Regina drinking water and local groundwater except for nitrogen, phosphorus and bacteria levels. The study also showed that by assuming no further treatment is required, the effluent reuse scheme could be competitive with the supply of water from the City system. A more detailed economic analysis is needed once the treatment plant is upgraded by the installation of a biological nutrient removal system and other treatment needs are assessed.
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