Conference Review
Affiliation: John Brooks Company Limited
in the water and wastewater sector.
• Why the self-priming pump is an ad vantageous design for sewage lift sta
Abstract:
The Gorman-Rupp Company, a manu facturer of self-priming sewage lift sta tions active in Canada, found that they were receiving more and more inquir ies for pump stations with a high total dynamic head, in excess of 30 metres. Investigation of the need for heads of this magnitude uncovered the cause - a steep system curve resulting from either a relatively small forcemain di ameter, or a high value of equivalent length. The situations responsible in cluded: infill development adding one or more pump stations to a system, ret rofit of a pump station for a higher ca pacity while re-using the existing forcemain, and connecting scattered effluent sources through a long forcemain to a rural treatment plant. This presentation reviewed the fol lowing material, to explain the nature ofthe special pumping station developed by Gorman-Rupp to address this need: •What a self-priming pump is, and how
tion service.
• Definition of parallel and series pump operation. • What a "Parallel-Series" station is and
how it works. Patent position. • How pump curves and system curves relate to the "Parallel-Series" concept. •The benefits obtainable from a "Paral
lel-Series" station.
This presentation was intended to provide engineers and operators with information on a viable (though rela tively new)technology, which employs self-priming pumps to generate total heads of up to 60 metres in lift station service.
6) Oil Grit Separators for Pavement Drainage - What are the benefits?
numbers of proprietary methods used to remove pollutants from stormwater and pavement drainage. Authorities have been calling for the treatment of stormwater to help prevent degradation of aquatic habitat, and now, manufacturers are responding with a number of prod ucts specifically designed for oil and grit removal from relatively small flows. These products are now starting to be specified in municipal standards al though no protocol has yet been estab lished for their acceptance. This presentation reviewed the con cepts involved in oil and grit removal, some water quality requirements for habitat protection, and applications where oil/grit separators are useful. It reviewed pollutant removal efficiencies of oil/grit separators and compared them to estimated values for other standard
Authors:
designs.
Bruce Kenning, P.Eng. Gary Minton, P.E., Ph.D. Affiliation:
ference, or a full list of the abstracts,
For more information about the con contact: British Columbia Water and
Reid Crowther & Partners Ltd.
Waste Association (BCWWA), 342-17
Resource Planning Associates
it works.
Abstract:
Fawcett Road, Coquitlam, BC, V3K 6V2, Tel: (604) 540-0111, Fax: (604)
•Where self-priming pumps are applied
Recent years have seen a surge in the
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