期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 144, 期 1-2, 页码 570-576出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2006.10.076
关键词
electrolysis; dye; COD removal; iron sludge; conductivity
Fenton process was employed to treat synthetic dye wastewater with supply of Fe(II) electrolytically generated from iron-containing sludge which was recycled and reused throughout the study. Treated water quality and properties of iron sludge after being repeatedly used were reported and discussed. Experimental results showed that COD was mainly removed by oxidation other than coagulation. Although, the process was quite effective for COD and color removal, conductivity of treated water was enormously high. Meanwhile, repeated use of iron-containing sludge results in accumulation of organic materials embedded in the sludge as indicated by increasing volatile suspended solid (VSS)/TSS ratio and decreasing zeta potential. (C) 2006 Elsevier B.V. All rights reserved.
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