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• W4320485364 abstract "Efficient dewatering of sludge is necessary for its cost-effective transportation and final disposal. However, the common method of using polyferric sulfate (PFS) and polyacrylamide (PAM) requires a large amount of dosage and produces high iron ion content in the filtrate. This study examined a solution of applying polyamine (PA) coupled with inorganic coagulant PFS. The results demonstrated that using PFS + PA together could achieve the same or similar filtering rates as using PFS + PAM. The capillary suction time (CST) of PFS + PA (89.0 s) was equivalent to that of PFS (75.1 s) and better than that of PA (117.1 s) and raw sludge (RS, 403.8 s). Compared with PFS + PAM, the combination of PFS and PA efficiently removed Fe ions and chemical oxygen demand (COD) in sludge water content, with Fe ions in the sludge filtrate reduced by 97.8% and COD reduced by 78.9%, respectively. By analyzing the basic physicochemical properties of the sludge system, including the synergistic effect of coagulation and flocculation, sludge hydrolysis and flocculation, it indicated that PA + PFS could reduce bound water. These results demonstrated that combining PFS and PA to improve sludge dewatering performance is more beneficial than utilizing a coagulant or flocculant alone, even PFS + PAM." @default.
• W4320485364 created "2023-02-14" @default.
• W4320485364 creator A5046185087 @default.
• W4320485364 creator A5056964360 @default.
• W4320485364 creator A5057949766 @default.
• W4320485364 date "2023-02-13" @default.
• W4320485364 modified "2023-09-25" @default.
• W4320485364 title "Combined conditioning of inorganic coagulant and polyamine to improve the dewaterability of municipal sludge, minimize dosage and reduce the influence of filtrate" @default.
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• W4320485364 doi "https://doi.org/10.2166/wst.2023.044" @default.
• W4320485364 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37051785" @default.
• W4320485364 hasPublicationYear "2023" @default.
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