Temporary Water Pipeline
Temporary Water Pipeline
(OP)
I’ve been tasked with designing a temporary water pipeline to transport 10,500,000 gallons of water from a river to a tank approximately 1.7mi away. The elevation difference between the river and the tank is approximately 180ft. The height of the tank is 66ft. I’ve calculated a head loss due to friction of approx 153ft. Therefore a TDH of approximately 400ft (I believe this is correct).
Pump selection is not my strong suit, but we would like to run 1 main pump with 2-3 booster pumps along the line at low pressures. I’m wondering if this would be necessary, and how I would go about determining this.
Also, has anyone used a sediment removal system at this high of a flow rate with any success? We’ll be using 8 inch Victaulic coupled line.
Any thoughts or insight would be very helpful.
Pump selection is not my strong suit, but we would like to run 1 main pump with 2-3 booster pumps along the line at low pressures. I’m wondering if this would be necessary, and how I would go about determining this.
Also, has anyone used a sediment removal system at this high of a flow rate with any success? We’ll be using 8 inch Victaulic coupled line.
Any thoughts or insight would be very helpful.





RE: Temporary Water Pipeline
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A gravity plate settler or a ballasted flocculation clarifier can be used to remove the sediment.
One pump would be the preferred approach.
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You don't actually give the flow rate or time you want to fill the tank in.
You might want to consider using something like 180mm PE pipe (or two pipes) which as a standard comes on a reel of up to 150m length or bigger if you ask them nicely. For that sort of distance one pump should be enough, but depends on your profile. Running booster pumps is not easy and for a temporary system you would probably need break tanks at each location to avoid control issues.
Sediment removal you could try hydro cyclones especially if you can dump the discharge back into the river you got it from.
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: Temporary Water Pipeline
I was thinking either hydro cyclones or bag filters but I think the hydro cyclone system would have less pressure drop than the bag filters.
RE: Temporary Water Pipeline
A thing to watch with cyclones is that they like to operate with relatively low discharge pressure. Hence you might need a small lift pump with cyclone followed by a more meaty main pump otherwise they need to make the outlet nozzle so small that it either wears away or gets blocked every hour by a small pebble... Of course the vendor doesn't tell you this until after you've installed the bloody thing. However they generally have a fixed DP and don't normally block, but you need a big pebble catcher to prevent the outlet becoming blocked. Normally about 10 to 15% of the flow is returned as the discharge.
Although it might be a bit steep, think about these sorts of suppliers http://www.flexsteelpipe.com/rental-equipment
FOr a temporary pipe, anything you can unreel then reel back again should be better than jointing 12 or lower metre lengths of pipe.
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: Temporary Water Pipeline
RE: Temporary Water Pipeline
RE: Temporary Water Pipeline