DOC and UVA attenuation with soil aquifer treatment in the saturated zone of an artificial coastal sandfill

Chua, Lloyd H.C., Lo, Edmond Y.M, Shuy, Eng Ban, Robertson, Alexander P., Lim, Teik Thye and Tan, Soon Keat 2010, DOC and UVA attenuation with soil aquifer treatment in the saturated zone of an artificial coastal sandfill, Water science and technology, vol. 62, no. 3, pp. 491-500, doi: 10.2166/wst.2010.087.

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Title DOC and UVA attenuation with soil aquifer treatment in the saturated zone of an artificial coastal sandfill
Author(s) Chua, Lloyd H.C.ORCID iD for Chua, Lloyd H.C. orcid.org/0000-0003-2523-3735
Lo, Edmond Y.M
Shuy, Eng Ban
Robertson, Alexander P.
Lim, Teik Thye
Tan, Soon Keat
Journal name Water science and technology
Volume number 62
Issue number 3
Start page 491
End page 500
Total pages 10
Publisher IWA Publishing
Place of publication London, Eng.
Publication date 2010
ISSN 0273-1223
Keyword(s) soil analysis
water chemistry
water pollutants
silicon dioxide
time factors
water purification
ecosystem
Summary Results from a direct recharge experiment conducted in the field to investigate DOC and UVA(254) attenuation rates during the direct injection of UF treated wastewater into a artificial coastal sandfill are presented in this paper. Approximately 500 m(3) of ultra-filtered wastewater was injected into the saturated zone, over a period of 9 days. The movement of the plume was tracked over 80 days, during which time samples were obtained from multilevel samplers installed in transects across the drift axis of the plume. An analysis of fluorescein in the samples obtained during the drift of the UF plume showed that DOC and UVA were attenuated beyond rates predicted by conservative mixing, by up to a maximum of 45%. A degradation coefficient of 0.0175 day(-1) was found to be applicable for DOC degradation. After a drift period of 80 days, DOC and UVA reduced to approximately 4.5 mg/l and 0.100 cm(-1), respectively, from initial values of 8.06 mg/l and 0.199 cm(-1).
Language eng
DOI 10.2166/wst.2010.087
Field of Research 059999 Environmental Sciences not elsewhere classified
Socio Economic Objective 970105 Expanding Knowledge in the Environmental Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30063888

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