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Replace Bleeders With Circulation Pumps to Improve Quality, Lower Costs
Author(s) -
Tabe Shahram,
Cannard John,
Jamal Taher,
Edmonds Anthony C.F.
Publication year - 2011
Publication title -
opflow
Language(s) - English
Resource type - Journals
eISSN - 1551-8701
pISSN - 0149-8029
DOI - 10.1002/j.1551-8701.2011.tb03071.x
Subject(s) - christian ministry , circulation (fluid dynamics) , water quality , medicine , population , environmental science , sewage treatment , wastewater , sewage , operations management , water resource management , environmental engineering , environmental health , engineering , ecology , philosophy , theology , biology , aerospace engineering
To maintain suitable water aesthetics, Espanola ‐ a small town in Northern Ontario, Canada, with a population of 5,500 ‐ operated seven bleeders within its water distribution system. Water wasted from these bleeders was estimated to be about 30 percent of total annual production. In addition, the wastage contributed about the same percentage to the load of the sewage treatment plant. By removing one bleeder from the system, savings were estimated to be about $50,000. The savings assumed a conservative cost of $0.50/m 3 for treating water and wastewater. This article discusses a study by Espanola and the Ontario Ministry of the Environment to determine if circulation pumps (CPs) could successfully replace bleeders in certain scenarios and to compare the system's water quality and costs of bleeders vs. CPs.