Has anyone changed the carbon in a large GAC ?
Having had some very expensive quotes we are going to do it ourselves on our 16" x 65" cylinders.
We've changed softener resin lots of times but these cylinders are a bit big. A 200kg cylinder is going to be a bit difficult to manoeuvre in a very tight space.
Any hints or tips on the best way to get the old carbon out ?
I've seen it done by syphoning, the softener resin is drawn out with the water flow and filtered out by porous sacks held over a large tank to collect the water. They kept refilling the tank with a hose to fluff up the beads until flushed out.
I'm sure it would work the same with carbon.