Lake Dorothy Hydroelectric Dam Completion Benefits Alaska Residents
The Lake Dorothy Hydroelectric Project, located near Juneau Alaska, was begun in 2006 and completed in 2010. Karl Vander, of North Pacific Erectors,...
By Isaiah Helm, SRS Crisafulli Applications Engineer
In the February 2012 issue of Water Environment and Technology Magazine is an article titled “A solution for clogging pumps”, by Mike Gerszewski and Jim Fischer. If you are looking for an answer to your high-heeled wooden dancing shoe problems, it’s not very helpful. If you are looking for a case study in the costs related to plugging lift station pumps, it’s definitely worth a read.
The Village of Hartland, Wisconsin had frequent problems with debris clogging its sewage lift stations. Three or four times per week at random times during the day workers were called to unclog a pump. A staff of six operators was kept on hand to respond to those calls. Unclogging each pump took at least four man-hours and was obviously not a fun task.
Ultimately the village discovered a new style of pump that could handle the debris without clogging. As expected, the solution eliminated the clogging problem and the associated maintenance costs. An added, unexpected cost savings was a 60% average reduction in energy usage. Debris getting stuck in the impeller had dramatically reduced the pumping efficiency in the original lift stations.
The pump selection process considers many factors. Debris in the material to be moved must also be one of them. A lift station that cannot handle everything it encounters is not truly operating at its “best efficiency point.”
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The Lake Dorothy Hydroelectric Project, located near Juneau Alaska, was begun in 2006 and completed in 2010. Karl Vander, of North Pacific Erectors,...
On August 12, 2011 Maureen Lundman, SRS Crisafulli Sales Manager, received an email from SRS Crisafulli customer Mike Henningsen, of Henningsen...
By Isaiah Helm, SRS Crisafulli Applications Engineer