Thread: Ats
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  #26  
Old 10/05/2001, 11:32 AM
Fredfish Fredfish is offline
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Join Date: Oct 2000
Location: Kitchener ON
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Liquidshaneo
“I believe Morgan said something about the need for the ATS screen to be surged back and forth “


The idea is to have the water from the surge device surge over the algae screen instead of doing it by dump.


Mark
“Fred, Looks good to me. But why not put the algae inside the surge device? That would save space and plumbing�


It would save space and plumbing, but would it give enough water velocity over the algae? When the ATS info was up at Inland, they mentioned something about needing enough water velocity to remove waste from immediately around the algae. If the velocity is too low, a thin boundary layer of water forms around each strand of algae. Waste products build up in this boundary layer and this interferes with the nutrient exchange process. I wanted to make sure there was enough water velocity to avoid this.

Eric
“Fred, it would work, but the turfs that you want to promote seem to do best in that intertidal area - like where waves hit a rocky shore. “


What if I angle the screen so that part of it is under water, but most of it is at and above the low water line? I could also set the screen on an angled piece of glass so that the water flows over the screen.

Hmm... If I built the container that holds the screen so that it angles up and away from the surge, the water from the surge would run up the screen and then back down. It might take a little fiddling to get the angle right, but this would probably work.

Eric. Does it matter how much time the algae spends below the water and how much time it is immersed? I can also fiddle with the drain rate into the sump to adjust the submersed/immersed time.

Fred.