Hi,

Someone knows if a gravitational thikener can thicken sludge to 5%?

I'm asking for real experience and not theoretical. If yes, can you elaborate about the inlet for the thikener? Do you add any polymers?

Thanks a lot,
David

We would add polymer to our gravity thickener, which was mostly biological sludge with some inorganic matter ( scum wells / both primary and secondary ), we would get between 3% to 5%. Without poly we would only get 1% to 2%.
EDIT:
Im sorry i was thinking of our blending tank solids.
Our Gravity thickener numbers were 3% to 5% without poly, with poly they would range from 5% to 9%. If we had it to thick our pumps would not move it to our digesters.