A contemporary and historical analysis of the trace element composition of sewage sludge in the United Kingdom
File(s)WEJ - Manuscript_J.Liu and SR.Smith Final.pdf (494.27 KB)
Accepted version
Author(s)
Smith, Stephen
Liu, jin
Liu, shan
Type
Journal Article
Abstract
Sewage sludge is the essential by‐product of wastewater treatment and approaching 100% of the sludge generated in the United Kingdom is recycled to agricultural land. In collaboration with three major Water Utility companies in the United Kingdom, a critical statistical analysis of historical and contemporary sludge quality data was completed to demonstrate the long‐term patterns and improvements in the trace element (TE) content of sludge recycled to agriculture since 1989, and to indicate the current status of sludge quality in the United Kingdom. Comparisons with pollutant emission inventory data showed most of the TE concentrations in sludge were strongly linked to declining environmental emissions. A soil accumulation model showed that zinc and copper would be the first to approach their statutory soil limits in the long term and that nickel, cadmium, lead and mercury are no longer significant and, from a practical perspective, could be removed from the regulatory controls on agricultural use.
Date Issued
2021-08-01
Date Acceptance
2020-12-06
Citation
Water and Environment Journal, 2021, 35 (3), pp.892-901
ISSN
1747-6585
Publisher
Wiley
Start Page
892
End Page
901
Journal / Book Title
Water and Environment Journal
Volume
35
Issue
3
Copyright Statement
© 2020 Owner. This is the accepted version of the following article: Liu, J., Liu, S. and Smith, S.R. (2021), A contemporary and historical analysis of the trace element composition of sewage sludge in the United Kingdom. Water and Environment Journal. which has been published in final form at https://doi.org/10.1111/wej.12677
Identifier
https://onlinelibrary.wiley.com/doi/full/10.1111/wej.12677
Subjects
Science & Technology
Life Sciences & Biomedicine
Physical Sciences
Environmental Sciences
Limnology
Water Resources
Environmental Sciences & Ecology
Marine & Freshwater Biology
agriculture
biosolids
land spreading
sewage sludge
sludge quality
soil
trace elements
Environmental Engineering
Publication Status
Published
Date Publish Online
2020-12-07