Improving dewaterability of anaerobically digested sludge by combination of persulfate and zero valent iron

Song, Kang, Zhou, Xu, Liu, Yiqi, Xie, Guo-Jun, Wang, Dongbo, Zhang, Tingting, Liu, Chunshuang, Liu, Peng, Zhou, Beibei and Wang, Qilin (2016) Improving dewaterability of anaerobically digested sludge by combination of persulfate and zero valent iron. Chemical Engineering Journal, 295 436-442. doi:10.1016/j.cej.2016.03.064


Author Song, Kang
Zhou, Xu
Liu, Yiqi
Xie, Guo-Jun
Wang, Dongbo
Zhang, Tingting
Liu, Chunshuang
Liu, Peng
Zhou, Beibei
Wang, Qilin
Title Improving dewaterability of anaerobically digested sludge by combination of persulfate and zero valent iron
Journal name Chemical Engineering Journal   Check publisher's open access policy
ISSN 1385-8947
1873-3212
Publication date 2016-07-01
Year available 2016
Sub-type Article (original research)
DOI 10.1016/j.cej.2016.03.064
Open Access Status Not Open Access
Volume 295
Start page 436
End page 442
Total pages 7
Place of publication Amsterdam, Netherlands
Publisher Elsevier BV
Collection year 2017
Language eng
Formatted abstract
Biological wastewater treatment process generates large amounts of sludge, the treatment and disposal of which incur substantial costs. Enhancement of sludge dewaterability is of great importance for decreasing the sludge disposal cost in a wastewater treatment plant (WWTP). This study proposes an innovative conditioning approach to improve the dewaterability of the anaerobically digested sludge (ADS) collected from a full-scale WWTP for the first time. The ADS dewaterability was significantly improved in the presence of persulfate (0-1.0 g/g TS; TS: total solids) and zero valent iron (ZVI) (0-4.0 g/g TS) at neutral pH. The largest improvement of ADS dewaterability was obtained at 2.0 g ZVI/g TS and 0.5 g persulfate/g TS, under which the capillary suction time (an indicator of sludge dewaterability) was decreased by approximately 90%. Compared with the traditional Fenton process (Fe2+ + H2O2 at pH 2.0), economic analysis indicated that the ZVI-persulfate conditioning process is more economically attractive for enhancing ADS dewaterability
Keyword Advanced oxidization process
Anaerobically digested sludge
Dewaterability
Persulfate
Zero valent iron
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
Advanced Water Management Centre Publications
 
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