What is cationic polyacrylamide (CPAM)?

Cationic polyacrylamide (CPAM) were used extensively in water treatment, enhanced oil recovery and sludge dewatering. The review summarized the synthesis methods research progress of cationic flocculants.

Can cationic flocculants be used in sludge dewatering treatment?

Based on these reviews, the future research perspectives of synthesis and application on cationic flocculants in sludge dewatering treatment were proposed. Cationic polyacrylamide (CPAM) were used extensively in water treatment, enhanced oil recovery and sludge dewatering.

Are cationic copolymers used in sludge dewatering?

Four groups of synthesis technologies of cationic copolymers were reviewed, including aqueous solution polymerization, dispersion polymerization, inverse emulsion polymerization and photo initiated polymerization. Furthermore, the paper reviewed that the application of cationic flocculants in sludge dewatering treatment.

How can cationic microblock structure improve PD sludge dewatering effect?

Cationic microblock structure can produce compact floc with higher mechanical strength by enhancing electrical neutralization and electrical patching. As a skeleton, the compressibility of filter cake was reduced and the permeability was enhanced, and the PD sludge dewatering effect was significantly improved.

Can a pressurized vertical electro-osmotic dewatering system improve sludge dewaterability?

Thus, the pressurized vertical electro-osmotic dewatering (PVEOD) system has been successfully employed to enhance sludge dewaterability ( Mahmoud et al., 2010, Mahmoud et al., 2011, Mahmoud et al., 2018; Zhang et al., 2020).

Is TP-ADB a good flocculant for PD sludge dewatering?

The cationic microblock structure and hydrophobic association of TP-ADB are both helpful to enhance the PD sludge dewatering efficiency. The synergistic effect between them makes TP-ADB superior to other flocculants in the whole dosage range of PD sludge dewatering and condition.