Unraveling synergistic mechanisms of polyacrylamide coagulation and Fe2+/CaO2 Fenton-like oxidation to enhance sludge dewatering

• Published in: Chemical engineering journal (Lausanne, Switzerland : 1996) Vol. 479; p. 147576
• Main Authors: He, Dongqin, Zhu, Tingting, Sun, Mingkai, Chen, Jingyi, Luo, Hongwei, Li, Jun
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.01.2024
• Subjects: Activated sludge dewatering; Dosing order; Extracellular polymeric substances; Fe2+/CaO2; PAM; Dosing order; Extracellular polymeric substances; Fe2+/CaO2; PAM; Activated sludge dewatering

[Display omitted] •Fe2+/CaO2 system can enhance sludge dewatering effectively.•Fe2+ promotes the decomposition of in-situ produced H2O2 to breakdown TB-EPS.•Pre-addition of PAM before Fe2+/CaO2 treatment can achieve better sludge dewatering performance.•The dewatering mechanism of PAM/Fe2+/CaO2 trea...