文章基本信息

标题：The combined effects of hydrothermal treatment and Na2S2O8/ CuFe2O4 magnetic oxidation on sludge dewaterability improvement
本地全文：下载
作者：Yonghao Chen ; Dandan Chen ; Yuhao Dou 等
期刊名称：E3S Web of Conferences
印刷版ISSN：2267-1242
电子版ISSN：2267-1242
出版年度：2020
卷号：194
页码：4023-4027
DOI：10.1051/e3sconf/202019404023
出版社：EDP Sciences
摘要：Na 2 S 2 O 8 /CuFe 2 O 4 addition and hydrothermal pretreatment were combined in this paper to ameliorate the dewatering performance (DP) of sludge with specific-resistance of filtration (SRF), time of capillary suction (CST), and water content (Wc) as well as water types investigated. The results shown the synergistic effect between Na 2 S 2 O 8 /CuFe 2 O 4 addition and hydrothermal pretreatment and the DP of sludge reached to the best when the hydrothermal temperature was 150 o C, the addition amount of Na 2 S 2 O 8 was 0.08 mmol/g-VSS and the mass ratio of Na 2 S 2 O 8 /CuFe 2 O 4 was 2.0. Through the analysis of water distribution, it was also demonstrated that the sludge structure was destroyed with the surface moisture released. All the results obtained shown the significant impact of the combined methods on ameliorating DP of sludge and promoting sludge recovery and utilization.