Comparison of horizontal and vertical electric field in the treatment of river sediment by electro-dewatering

被引：16
|
作者：
Wu, Pan [1 ]
Zhan, Fuxin [1 ]
Wang, Zheng [1 ]
Li, Qunqun [1 ]
Li, Jianfeng [1 ]
Xiong, Ziming [1 ]
Shi, Yafei [1 ]
Pi, Kewu [1 ,2 ,3 ]
Liu, Defu [1 ,2 ]
Gerson, Andrea R. [3 ]
机构：
[1] Hubei Univ Technol, Sch Resource & Environm Engn, Wuhan, Hubei, Peoples R China
[2] Hubei Key Lab Ecol Restorat River Lakes & Algal U, Wuhan, Hubei, Peoples R China
[3] Blue Minerals Consultancy, Wattle Grove, Tas, Australia
来源：
DRYING TECHNOLOGY | 2019年 / 37卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Electro-dewatering; energy consumption; river sediment; sludge; WASTE-WATER SLUDGE; ACTIVATED-SLUDGE; BENCH-SCALE; PERFORMANCE; PARAMETERS; BIOSOLIDS; PRESSURE; REMOVAL;
D O I：
10.1080/07373937.2018.1460850
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The aim of this study was to evaluate and compare the effectiveness of horizontal (H-EDW) and vertical (V-EDW) electro-dewatering fields, in terms of dewatering and energy consumption, for the treatment of river sediment. The influence of the sludge thickness (3, 4, 5, 6, 7 cm) and the applied voltage (10-30 V) were examined. V-EDW was found to significantly improve dewatering and reduce process time, while H-EDW has the potential to save energy but results in sludge containing greater moisture. As the applied voltage was increased from 10 V to 30 V, the final dry solids content and energy consumption increased for both modes. Increased sludge thickness from 3 cm to 7 cm was found to have a negative influence on the final dry solid content of the sludge for V-EDW, but is not a significant influence with H-EDW. The results demonstrate that H-EDW is an effective dewatering method and has potential for continuous operation and energy efficiency for industrial-scale applications.
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页码：770 / 780
页数：11
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