Influence of cation leaching on water retentivity of drinking water sludge

Y. Watanabe, Hideo Komine

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Drinking water sludge (DWS) is discharged during water purification. It is presently classified as industrial waste. To use DWS in geotechnical works safely, it is important to focus on changeable water retention of DWS. This study investigated the influence of cation leaching to water retentivity of DWS. Cation leaching was simulated using column leaching tests. As a result, the water retentivity of DWS decreased after cation leaching. It was discussed that the hydrophilic part of flocculating agent used in water purification process was deformed by interaction with water and leached as Al. One calculation result showed that the change of water retention of DWS occurred around 7 years from the utilization. Therefore, it is beneficial to monitor the geotechnical utilization of DWS from the viewpoint of changeable water retentivity.

Original languageEnglish
Title of host publication14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering
Publication statusPublished - 2011
Externally publishedYes
Event14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2011 - Hong Kong
Duration: 2011 May 232011 May 27

Other

Other14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2011
CityHong Kong
Period11/5/2311/5/27

Fingerprint

sludge
Potable water
Leaching
drinking water
leaching
cations
cation
Positive ions
Water
water purification
water
water retention
Purification
flocculants
purification methods
industrial wastes
industrial waste
Industrial wastes
monitoring
testing

ASJC Scopus subject areas

  • Soil Science
  • Geotechnical Engineering and Engineering Geology

Cite this

Watanabe, Y., & Komine, H. (2011). Influence of cation leaching on water retentivity of drinking water sludge. In 14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering

Influence of cation leaching on water retentivity of drinking water sludge. / Watanabe, Y.; Komine, Hideo.

14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering. 2011.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Watanabe, Y & Komine, H 2011, Influence of cation leaching on water retentivity of drinking water sludge. in 14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering. 14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2011, Hong Kong, 11/5/23.
Watanabe Y, Komine H. Influence of cation leaching on water retentivity of drinking water sludge. In 14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering. 2011
Watanabe, Y. ; Komine, Hideo. / Influence of cation leaching on water retentivity of drinking water sludge. 14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering. 2011.
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