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Highlights of the novel dewaterability estimation test (DET) device

Scholz, Miklas LU ; Almuktar, Suhad LU ; Clausner, Christian and Antonacopoulos, Apostolos (2020) In Environmental Technology 41(20). p.2594-2602
Abstract

Many industries, which are producing sludge in large quantities, depend on sludge dewatering technology to reduce the corresponding water content. A key design parameter for dewatering equipment is the capillary suction time (CST) test, which has, however, several scientific flaws, despite that the test is practical and easy-to-perform. The standard CST test has a few considerable drawbacks: its lack of reliability and difficulties in obtaining results for heavy sludge types. Furthermore, it is not designed for long experiments (e.g. >30 min), and has only two measurement points (its two electrodes). In comparison, the novel dewaterability estimation test (DET) test is almost as simple as the CST, but considerably more reliable,... (More)

Many industries, which are producing sludge in large quantities, depend on sludge dewatering technology to reduce the corresponding water content. A key design parameter for dewatering equipment is the capillary suction time (CST) test, which has, however, several scientific flaws, despite that the test is practical and easy-to-perform. The standard CST test has a few considerable drawbacks: its lack of reliability and difficulties in obtaining results for heavy sludge types. Furthermore, it is not designed for long experiments (e.g. >30 min), and has only two measurement points (its two electrodes). In comparison, the novel dewaterability estimation test (DET) test is almost as simple as the CST, but considerably more reliable, faster, flexible and informative in terms of the wealth of visual measurement data collected with modern image analysis software. The standard deviations associated with repeated measurements for the same sludge is lower for the DET than for the CST test. In contrast to the CST device, capillary suction in the DET test is linear and not radial, allowing for a straightforward interpretation of findings. The new DET device may replace the CST test in the sludge-producing industries in the future.

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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Capillary suction time, filter paper property, image processing technology, resistance to filtration, sludge treatment, water technology
in
Environmental Technology
volume
41
issue
20
pages
9 pages
publisher
Taylor & Francis
external identifiers
  • scopus:85073938995
  • pmid:30689531
ISSN
0959-3330
DOI
10.1080/09593330.2019.1575916
language
English
LU publication?
yes
id
d1e0b897-b8a1-457e-8538-a7aecf13663f
date added to LUP
2021-01-08 12:25:21
date last changed
2024-06-27 05:55:15
@article{d1e0b897-b8a1-457e-8538-a7aecf13663f,
  abstract     = {{<p>Many industries, which are producing sludge in large quantities, depend on sludge dewatering technology to reduce the corresponding water content. A key design parameter for dewatering equipment is the capillary suction time (CST) test, which has, however, several scientific flaws, despite that the test is practical and easy-to-perform. The standard CST test has a few considerable drawbacks: its lack of reliability and difficulties in obtaining results for heavy sludge types. Furthermore, it is not designed for long experiments (e.g. &gt;30 min), and has only two measurement points (its two electrodes). In comparison, the novel dewaterability estimation test (DET) test is almost as simple as the CST, but considerably more reliable, faster, flexible and informative in terms of the wealth of visual measurement data collected with modern image analysis software. The standard deviations associated with repeated measurements for the same sludge is lower for the DET than for the CST test. In contrast to the CST device, capillary suction in the DET test is linear and not radial, allowing for a straightforward interpretation of findings. The new DET device may replace the CST test in the sludge-producing industries in the future.</p>}},
  author       = {{Scholz, Miklas and Almuktar, Suhad and Clausner, Christian and Antonacopoulos, Apostolos}},
  issn         = {{0959-3330}},
  keywords     = {{Capillary suction time; filter paper property; image processing technology; resistance to filtration; sludge treatment; water technology}},
  language     = {{eng}},
  number       = {{20}},
  pages        = {{2594--2602}},
  publisher    = {{Taylor & Francis}},
  series       = {{Environmental Technology}},
  title        = {{Highlights of the novel dewaterability estimation test (DET) device}},
  url          = {{http://dx.doi.org/10.1080/09593330.2019.1575916}},
  doi          = {{10.1080/09593330.2019.1575916}},
  volume       = {{41}},
  year         = {{2020}},
}