Sewer Pump Station
Sewer Pump Station
(OP)
I need to know the following. How i can size a sewer pump station of a new hotel complex. I have to option:
a. Use the total unit fixture discharge an change it to GPM in the table of demand.
b. Use the demand in galons per day per person in the hotel and estimate the peak demand (more and less 4 times).
The problem is the following: the quantity is very different in both option. Could anybody explain how i can size the pump capacity. (option a or b)
a. Use the total unit fixture discharge an change it to GPM in the table of demand.
b. Use the demand in galons per day per person in the hotel and estimate the peak demand (more and less 4 times).
The problem is the following: the quantity is very different in both option. Could anybody explain how i can size the pump capacity. (option a or b)





RE: Sewer Pump Station
RE: Sewer Pump Station
RE: Sewer Pump Station
Option a would seem to yield an unnecessarily conservative result, as if every fixture was opened/flushed/operated at precisely the same time.
BUT, if this is for a Hotel chain, from jobs I've done for Hotel and restaurant chains, they will have diurnal sags and peaks from other similar bldgs. Use that, I'm suprised that isn't spec'd by them; it was on the last few I've done.
Engineering is the practice of the art of science - Steve
RE: Sewer Pump Station
RE: Sewer Pump Station
ref: Viessman & Hammer, Water Supply and Pollution Control
RE: Sewer Pump Station
This can be a large plug flow that could exceed the estimated peak flow if only considering occupant load. I have seen the use of a surge pit or tank to minimize the large short term flow requirements from the treatment system.