Re: Sewage Pumping Station

From: <Jack>
Date: Mon Apr 11 2005 - 22:42:00 EDT

Hi Omid!

Greetings from California! On the wastewater wet well submersible pumps I have sized, wahat you have described is the system I use. I make sure that there is sufficient volume in the wet well such that the pump will not operate for more than say, 6 times an hour, at peak flows. I also take a look at the solids handling capability of the pump, given that all sorts of crud can get into the wet well. I know Flygt makes pumps that have the capability to handle 3" solids, but I am getting in above my head now on this stuff, if I were you, I would give the local pump vendor that sells wastewater pumps a call....

good luck....

Jack

Hi all

In pump selection procedure in sewgae, I know that the recommended frequency for pump operation is 6 times in hour also I have calculated sump volume to be sure about 30 min retention time at maximum and I chose 4 pumps to pump 570 l/s sewage and Head is 4.2 m.( I chose ITT Flyght 3125 CP/CT/CS) My question is how can I find that this pump is apprpriate for my job, will it starts 6 times in hour? retention time will be 30 min with my pumps? how can I answer these question?
appreciate your contribution.

Omid

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Jack Osborn, P.E.
Mechanical Engineer
MWH

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Received on Mon Apr 11 22:42:00 2005