Pumping from a storage tank 5

[Norm01]

I am dealing with a client who has a circulating pool system. The idea is to collect drain water from a splash pad (using a storage tank of some kind) transfer it to a surge tank (existing), filter and chlorinate the water and then send it back to the pad. We need to pump around 200 gpm of water from the storage tank to the surge tank. My question concerns the type of storage tank to be used and the pumping mechanism. We are looking at a tank capacity of 300 gallons. The storage tank will be located in the ground on landscaped property. Does anyone know if it is cheaper (or better) to use a plastic type of water storage tank or to have the tank made from poured concrete (i.e. similar to a sump pit)?
Would a submersible pump be the best approach to transfer the water?
Any thoughts will be appreciated.

 

[Artisi]

A plastic tank is ok and probably easier to install than having to setup for a concrete pour. A submersible pump is ok as you don't neeed to worry about priming etc.

 

[StephenA]

The submersible pump could get clogged if the splash pad gets leaves, T shirts, bikini tops etc. in it, so any pump will need to have good access.

Stephen Argles
Land & Marine

http://www.landandmarine.com

 

[SteveWag]

Use a submersible sewage pump like Flygt. If the pump is to be removable, or if the area sees traffic, a concrete tank offers better opportunities for fastening. Plastic is easier to install and easier to install bulkheads in the field. Concrete manholes are readily available and can withstand road traffic.
Steve

 

[BigInch]

Pump's way too big for that tank size. Its 1.5 minutes running, then cut off? Something' not optimized here. I suspect its not the flowrate, the tank size or the pump size. Its certainly not the pump operating time.

If plastic, will it withstand the soil loads. Maybe the plastic tank needs a concrete box to put it in? Do you have epansive clay? A plastic tank will probably need to be anchored in the ground should the surrounding soil become flooded and try to buoy up the tank, whereas a concrete tank might not need additional anchoring, or can be made heavy enough simply by increasing the wall or slab thickness.



I have not failed. I've just found 10,000 ways that won't work."-Edison “If Edison had a needle to find in a haystack, he would proceed at once to examine straw after straw until he found the object of his search. I was a sorry witness of such doings, knowing that a little theory and calculation would have saved 90% of his work.- Tesla

 

[dabluffrat]

Biginch, that ws my first thought too... he'll need a another pump to keep the 300 gal tank from over flowing

 

[BigInch]

Right. The math is very fuzzy here.

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