Effect of Contaminated Suspended Solids on Water and Sediment Qualities and Their Treatment

Volume 6, Issue 3 (March 2009)

Click here to download this paper now for $25 PDF (336K)

View License Agreement

ISSN: 1546-962X
CODEN: JAIOAD
Published Online: 19 February 2009
Page Count: 11

Effect of Contaminated Suspended Solids on Water and Sediment Qualities and Their Treatment

Inoue, Tomohiro
Postdoctoral Fellow, Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, Quebec

Mulligan, Catherine N.
Professor, Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, Quebec

Zadeh, Ehsan M.
Graduate Student, Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, Quebec

Fukue, Masaharu
Professor, Department of Marine Civil Engineering, Tokai University, Shizuoka-shi, Shizuoka,

(Received 9 October 2008; accepted 13 January 2009)

Abstract

Suspended solids (SS) have been discharged into water areas such as rivers, lakes, and ponds. The SS adsorb various contaminants such as heavy metals and nutrients and also form sediments by sedimentation. Therefore, contaminated SS will be able to influence not only the water quality, but also the sediment quality. In order to understand the effect of contaminated SS on the water and the sediment, SS and sediment samples were obtained from the des Hurons River in Canada. In addition, laboratory filtration tests were performed to develop a technique for removal of the SS. A downward filtration system was used with a nonwoven geotextile as a filter medium. The apparent opening size (AOS) and the thickness of the filter were 150 μm and 0.2 cm, respectively. For the investigation, the results showed that both SS and the sediments contained heavy metals with concentrations in the SS higher. In particular, zinc concentrations of the SS were approximately from two to five times higher than the Canadian guideline for sediments. In addition, it was found that SS concentrations were associated with chemical oxygen demand (COD) and total phosphorus (T-P) concentrations. Therefore, it was found that SS can play an important role in the water and the sediment qualities. The laboratory filtration tests showed the SS were reduced from 32 mg/L to 2 mg/L or less by the nonwoven filter. Thus, SS removal will improve not only the water quality, but also the quality of the bottom sediments.

Keywords:
suspended solids, filtration, nutrients, heavy metals, nonwoven geotextile

Paper ID: JAI102185
DOI: 10.1520/JAI102185
ASTM International is a member of CrossRef.

Author Title Effect of Contaminated Suspended Solids on Water and Sediment Qualities and Their Treatment Symposium Twelfth International Symposium on Flammability and Sensitivity of Materials in Oxygen-Enriched Atmospheres, 2009-10-09 Committee D18

		SEDL / Journals / Journal of ASTM International (JAI) / Citation Page Volume 6, Issue 3 (March 2009) Click here to download this paper now for $25 PDF (336K) View License Agreement ISSN: 1546-962X CODEN: JAIOAD Published Online: 19 February 2009 Page Count: 11 Effect of Contaminated Suspended Solids on Water and Sediment Qualities and Their Treatment Inoue, Tomohiro Postdoctoral Fellow, Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, Quebec Mulligan, Catherine N. Professor, Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, Quebec Zadeh, Ehsan M. Graduate Student, Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, Quebec Fukue, Masaharu Professor, Department of Marine Civil Engineering, Tokai University, Shizuoka-shi, Shizuoka, (Received 9 October 2008; accepted 13 January 2009) Abstract Suspended solids (SS) have been discharged into water areas such as rivers, lakes, and ponds. The SS adsorb various contaminants such as heavy metals and nutrients and also form sediments by sedimentation. Therefore, contaminated SS will be able to influence not only the water quality, but also the sediment quality. In order to understand the effect of contaminated SS on the water and the sediment, SS and sediment samples were obtained from the des Hurons River in Canada. In addition, laboratory filtration tests were performed to develop a technique for removal of the SS. A downward filtration system was used with a nonwoven geotextile as a filter medium. The apparent opening size (AOS) and the thickness of the filter were 150 μm and 0.2 cm, respectively. For the investigation, the results showed that both SS and the sediments contained heavy metals with concentrations in the SS higher. In particular, zinc concentrations of the SS were approximately from two to five times higher than the Canadian guideline for sediments. In addition, it was found that SS concentrations were associated with chemical oxygen demand (COD) and total phosphorus (T-P) concentrations. Therefore, it was found that SS can play an important role in the water and the sediment qualities. The laboratory filtration tests showed the SS were reduced from 32 mg/L to 2 mg/L or less by the nonwoven filter. Thus, SS removal will improve not only the water quality, but also the quality of the bottom sediments. Keywords: suspended solids, filtration, nutrients, heavy metals, nonwoven geotextile Paper ID: JAI102185 DOI: 10.1520/JAI102185 ASTM International is a member of CrossRef. Author Title Effect of Contaminated Suspended Solids on Water and Sediment Qualities and Their Treatment Symposium Twelfth International Symposium on Flammability and Sensitivity of Materials in Oxygen-Enriched Atmospheres, 2009-10-09 Committee D18