figshare
Browse
tent_a_911754_sm5065.doc (678 kB)

Enhanced organic pollutant removal influenced by activated-ferric-sludge

Download (0 kB)
Version 2 2014-06-16, 07:29
Version 1 2014-06-16, 07:29
journal contribution
posted on 2014-06-16, 07:29 authored by G.R. Xu, J.H. Tang, G.B. Li, L. Spinosa

The primary goal of this study was to compare the pollutant removal efficiency of the reactivated activated-ferric-sludge (AFS) with that of the activated sludge (AS). Most tested organic pollutants were preferably removed by reactivated AFS. The optimal reactivated conditions for AFS were a reactivation time of 3 h, pH of 5–9, AFS dose of 5 g/L and dissolved oxygen of 2–6 mg/L. The results revealed a positive correlation between microbial activity and the removal efficiency of organic pollutants, with a higher microbial activity being associated with a better removal efficiency of organic pollutants. Additionally, variations in extracellular polymeric substances were found to be crucial to the microbial activity and adsorption capacity of reactivated AFS. After reactivation, reactivated AFS was superior to AS for the removal of most pollutants. Finally, the mechanism of AFS reactivation was investigated. Overall, the results of the present study demonstrate that reactivated AFS has the potential for widespread application in the removal of organic pollutants during the wastewater treatment process.

History

Usage metrics

    Environmental Technology

    Licence

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC