Converting GPM to GPD
Converting GPM to GPD
(OP)
I have a Sewer District asking for a Gallons Per Day discharge for sanitary sewer only, on a small water park in Southern California. If I just multiply my GPM by how many hours in a day the park is open (10), this will be an un-realistic number. Does anyone have any type of useage factor to come to a realistic GPD number for my sanitary sewer discharge????? The information on the project is as follows.....
230 total Drainage Fixture Units
203 total Water Fixture Units
13,000 sq ft total Building Area
If you need any more information, let me know.
THANKS!
230 total Drainage Fixture Units
203 total Water Fixture Units
13,000 sq ft total Building Area
If you need any more information, let me know.
THANKS!





RE: Converting GPM to GPD
rmw
RE: Converting GPM to GPD
To me (no special expertise claimed), it would seem logical to size the sanitary system based on the maximum number of family units expected to be present, since flow per family unit should be nearly invariant.
Mike Halloran
Pembroke Pines, FL, USA
RE: Converting GPM to GPD
RE: Converting GPM to GPD
This wouldn't be part of the fixture count but would contribute a lot to the sanitary discharge load.
RE: Converting GPM to GPD
Here is some more info....
This is predominantly a flush valve system. It operates for 10 hours a day in the summer time. The discharge from the pools are not taken into account because they will be backwashed after hours. I contacted the sewer district asking if they have any type of useage factor they can give me to use and they don't have anything. I thought since they have this question on their application, they should have some type of equation to figure fixture useage, and what does and does not go down my sewer. They do not have any advice to help. It seems to me the sewer district needs to provide me with some type of estimated peak people per day, or something like that?? Your thoughts?
RE: Converting GPM to GPD
RE: Converting GPM to GPD
From my resource (Frankel's Facility Piping Systems Handbook) a developed campground would see 21-40 gpd/person (avg 32). A swimming pool would see 10.6 gpd/person which includes both customer and employee.
There would likely be some cross over so maybe 35 gpd/person. Maybe be conservative and use 40 gpd/person.
RE: Converting GPM to GPD
Zapster- I forgot to tell you this is a community water park. The sewer district is the owner.
Thanks for the help guys. I will see what kind of feedback I get from this.