Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Water quality changes during the first meter of managed aquifer recharge

Hägg, Kristofer LU orcid ; Li, Jing LU ; Heibati, Masoumeh ; Murphy, Kathleen R. ; Paul, Catherine J. LU orcid and Persson, Kenneth M. LU (2021) In Environmental Science: Water Research and Technology 7(3). p.562-572
Abstract

The capacity of an artificial recharge field to alter organic matter and the bacterial flora of surface water was assessed by following changes in bacterial communities and composition of natural organic matter (NOM) over the first meter of infiltration depth. The sampling strategy applied in this study ensured that water samples consisted only of infiltrated water, excluding natural groundwater. Water was sampled at 50 and 100 cm below the surface of an infiltration basin divided into two halves; one side was dried and frozen and one was infiltrating water during the winter period prior to the sampling period. Bacterial cell counts, proportions of intact cells and community fingerprints were determined by flow cytometry, and NOM was... (More)

The capacity of an artificial recharge field to alter organic matter and the bacterial flora of surface water was assessed by following changes in bacterial communities and composition of natural organic matter (NOM) over the first meter of infiltration depth. The sampling strategy applied in this study ensured that water samples consisted only of infiltrated water, excluding natural groundwater. Water was sampled at 50 and 100 cm below the surface of an infiltration basin divided into two halves; one side was dried and frozen and one was infiltrating water during the winter period prior to the sampling period. Bacterial cell counts, proportions of intact cells and community fingerprints were determined by flow cytometry, and NOM was characterized using total organic carbon (TOC), UV254 nm-absorbance (UVA) and fluorescence spectroscopy. Around 40% of the NOM was removed after only 50 cm. Protein-like components were reduced to a larger extent (45-50%) than the humic-like components (25%), suggesting removal of mostly biodegradable fractions of NOM. After only 50 cm of infiltration, about 99% total cell count (TCC) was removed. The flow cytometric data revealed that the bacterial communities collected after infiltration from the basin area that had been dried and frozen were more similar to those in the raw water. This suggests that drying and freezing the basin negatively impacted its treatment capacity. The results from this study highlight the importance of a well-developed biofilm and unsaturated zone for artificial recharge. This journal is

(Less)
Please use this url to cite or link to this publication:
author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Environmental Science: Water Research and Technology
volume
7
issue
3
pages
11 pages
publisher
Royal Society of Chemistry
external identifiers
  • scopus:85102846467
ISSN
2053-1400
DOI
10.1039/d0ew00839g
language
English
LU publication?
yes
id
5bbf2543-56cf-4177-b1eb-431c309fe5e4
date added to LUP
2021-03-31 10:36:41
date last changed
2024-06-30 12:32:37
@article{5bbf2543-56cf-4177-b1eb-431c309fe5e4,
  abstract     = {{<p>The capacity of an artificial recharge field to alter organic matter and the bacterial flora of surface water was assessed by following changes in bacterial communities and composition of natural organic matter (NOM) over the first meter of infiltration depth. The sampling strategy applied in this study ensured that water samples consisted only of infiltrated water, excluding natural groundwater. Water was sampled at 50 and 100 cm below the surface of an infiltration basin divided into two halves; one side was dried and frozen and one was infiltrating water during the winter period prior to the sampling period. Bacterial cell counts, proportions of intact cells and community fingerprints were determined by flow cytometry, and NOM was characterized using total organic carbon (TOC), UV254 nm-absorbance (UVA) and fluorescence spectroscopy. Around 40% of the NOM was removed after only 50 cm. Protein-like components were reduced to a larger extent (45-50%) than the humic-like components (25%), suggesting removal of mostly biodegradable fractions of NOM. After only 50 cm of infiltration, about 99% total cell count (TCC) was removed. The flow cytometric data revealed that the bacterial communities collected after infiltration from the basin area that had been dried and frozen were more similar to those in the raw water. This suggests that drying and freezing the basin negatively impacted its treatment capacity. The results from this study highlight the importance of a well-developed biofilm and unsaturated zone for artificial recharge. This journal is </p>}},
  author       = {{Hägg, Kristofer and Li, Jing and Heibati, Masoumeh and Murphy, Kathleen R. and Paul, Catherine J. and Persson, Kenneth M.}},
  issn         = {{2053-1400}},
  language     = {{eng}},
  number       = {{3}},
  pages        = {{562--572}},
  publisher    = {{Royal Society of Chemistry}},
  series       = {{Environmental Science: Water Research and Technology}},
  title        = {{Water quality changes during the first meter of managed aquifer recharge}},
  url          = {{http://dx.doi.org/10.1039/d0ew00839g}},
  doi          = {{10.1039/d0ew00839g}},
  volume       = {{7}},
  year         = {{2021}},
}