A study of dual polymer conditioning of aluminum-based drinking water treatment residual

Exploitation of Fenton and Fenton-like reagents as alternative conditioners for alum sludge conditioning

“…However, considerable differences in the settling behaviour can be observed between the sludge conditioned with the polymers and those conditioned with the Fenton's reagent. This may be explained by the polymer particle size-bridging mechanism which significantly increases the size of sludge particles (Zhao;Ma et al, 2007). Figure 6 provides a qualitative description of the effectiveness of the different conditioners on the sludge conditioning as compared with that of the raw sludge.…”

“…Generated in large quantities from drinking water treatment plants that use aluminium sulphate as a primary coagulant, alum sludge was characterized as rather difficult to dewater. The organic polymers (polyelectrolytes) have been used mostly in practice for conditioning the sludge prior to the dewatering operation (Zhao and Bache, 2001;Ma et al, 2007).…”

Evaluation on the dewatering process of cyanobacteria-containing AlCl3 and PACl drinking water sludge

“…However, various filtration conditions have different influences on different kinds of sludge. Besides, most researches on sludge treatment only focused on the dewaterability of sludge, few referred to the secondary pollution during the sludge formation and treatment processes [19][20][21].…”

Dewaterability of sludge conditioned with surfactant DDBAC pretreatment by acid/alkali

“…Thus, sludge should be dewatered prior to its final disposal (Liu et al 2013;Tokumura et al 2007). Different kinds of polymers (i.e., polymeric ferric sulfate, polyaluminium chloride, and polyacrylamide) are widely used in conditioning sludge prior to dewatering (Ma et al 2007;Zhao and Bache 2001). Nonetheless, the use of these polymers is limited due to the following reasons.…”