Application Note: Control of drinking water clarifiers
The Sonatax sludge level probe enables the sludge removal cycle in lamella clarifiers to be automated, thereby achieving optimum sludge concentration results at the centrifuge inlet. These optimum results are achieved with di erent electrolytes by adjusting the sludge level at the start of the purge, based on the floc density obtained. Starch produces a lighter floc and the sludge level needs to be kept lower than when using polyelectrolytes to prevent the sludge from lifting under high hydraulic loads. Both types of flocculant significantly improve the stability of the removed sludge, with an increase in the concentration of solids.