Dewatering and Sludge Conditioning

As shown for clay [39], the sediment height and therefore the density of the sediment can be measured quantitatively using the separation analyzer LUMiFuge. The results obtained agreed very well with other methods like the JAR-Test, which is not so convenient. 

One example of a very special dual-component polymeric flocculant is poly (ethylene oxide) (PEO) and carboxylated phenolic resin (CPR), usually referred to as a cofactor. It has been shown that this dual flocculant can induce a richness of flocculation behavior depending on the concentration of the two components [40,41]. Flocculation, deflocculation, and reflocculation of cellulose particles were studied for various CPR PEO ratios. It was found that reflocculation is a strong function of this ratio. For low ratios, no reflocculation occurs after a few cycles, whereas for high ratios very limited flocculation and reflocculation occurs. 

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