CIESC Journal ›› 2023, Vol. 74 ›› Issue (7): 3038-3050.DOI: 10.11949/0438-1157.20230354
• Energy and environmental engineering • Previous Articles Next Articles
Yuanhao QU(), Wenyi DENG(), Xiaodan XIE, Yaxin SU
Received:
2023-04-10
Revised:
2023-06-10
Online:
2023-08-31
Published:
2023-07-05
Contact:
Wenyi DENG
通讯作者:
邓文义
作者简介:
屈园浩(1997—),男,硕士研究生,15503949225@163.com
基金资助:
CLC Number:
Yuanhao QU, Wenyi DENG, Xiaodan XIE, Yaxin SU. Study on electro-osmotic dewatering of sludge assisted by activated carbon/graphite[J]. CIESC Journal, 2023, 74(7): 3038-3050.
屈园浩, 邓文义, 谢晓丹, 苏亚欣. 活性炭/石墨辅助污泥电渗脱水研究[J]. 化工学报, 2023, 74(7): 3038-3050.
含水率/%(质量) | pH | 电导率/(μS/cm) | 灰分(干基)/%(质量) | 挥发分(干基)/%(质量) | 固定碳(干基)/%(质量) |
---|---|---|---|---|---|
80.0±0.5 | 7.2±0.1 | 1175±50 | 45.9±0.5 | 47.8±0.5 | 6.3±0.5 |
Table 1 Basic properties of sludge
含水率/%(质量) | pH | 电导率/(μS/cm) | 灰分(干基)/%(质量) | 挥发分(干基)/%(质量) | 固定碳(干基)/%(质量) |
---|---|---|---|---|---|
80.0±0.5 | 7.2±0.1 | 1175±50 | 45.9±0.5 | 47.8±0.5 | 6.3±0.5 |
Fig.1 Electro-osmotic dewatering device1—pressure sensor; 2—thermocouple; 3—sealing apron; 4—ruthenium iridium titanium anode plate; 5—piston; 6—filter cloth; 7—sludge sample; 8—bottom filter plate; 9—stainless steel cathode mesh; 10—beaker; 11—electronic balance; 12—bracket; 13—base; 14—jack; 15—insulating sleeve; 16—metal sleeve; 17—current probe; 18—signal generator; 19—oscilloscope; 20—power amplifier; 21—digital display of pressure value; 22—digital display of temperature; 23—voltmeter
粒径/mm | 含水率/%(质量) |
---|---|
<0.056 | 41.8±0.2 |
0.056~0.1 | 41.0±0.2 |
0.1~0.335 | 41.3±0.2 |
0.335~0.5 | 42.0±0.2 |
0.5~0.8 | 42.5±0.2 |
0.8~1 | 42.1±0.2 |
Table 2 The results of pre-experiments
粒径/mm | 含水率/%(质量) |
---|---|
<0.056 | 41.8±0.2 |
0.056~0.1 | 41.0±0.2 |
0.1~0.335 | 41.3±0.2 |
0.335~0.5 | 42.0±0.2 |
0.5~0.8 | 42.5±0.2 |
0.8~1 | 42.1±0.2 |
Fig.2 Water content of sewage sludge (a), filtrate content of cathode and anode (b) and pH of filtrate (c) from electro-osmotic dewatering with different percentage of additives, and energy consumption change curve (d)
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