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Phosphorus in soil treatment systems

accumulation and mobility

Eveborn, David and Gustafsson, Jon Petter and Yu, Lin and Elmefors, Elin and Eriksson, Ann Kristin and Ljung, Emelie and Renman, Gunno (2014). Phosphorus in soil treatment systems. Water research. 64 , 42-52
[Research article]

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Official URL: http://dx.doi.org/10.1016/j.watres.2014.06.034


Septic tanks with subsequent soil treatment systems (STS) are a common treatment technique for domestic wastewater in rural areas. Phosphorus (P) leakage from such systems may pose a risk to water quality (especially if they are located relatively close to surface waters). In this study, six STS in Sweden (11-28 years old) were examined. Samples taken from the unsaturated subsoil beneath the distribution pipes were investigated by means of batch and column experiments, and accumulated phosphorus were characterized through X-ray absorption near edge structure ()CANES) analysis. At all sites the wastewater had clearly influenced the soil. This was observed through decreased pH, increased amounts of oxalate extractable metals and at some sites altered P sorption properties. The amount of accumulated P in the STS were found to be between 0.32 and 0.87 kg m(-3), which in most cases was just a fraction of the estimated P load (<30%). Column studies revealed that high P concentrations (up to 6 mg L-1) were leached from the material when deionized water was applied. However, the response to deionized water varied between the sites. As evidenced by XANES analysis, aluminium phosphates or P adsorbed to aluminium (hydr)oxides, as well as organically bound P, were important sinks for P. Generally soils with a high content of oxalate-extractable Al were also less vulnerable to P leakage. (C) 2014 Elsevier Ltd. All rights reserved.

Authors/Creators:Eveborn, David and Gustafsson, Jon Petter and Yu, Lin and Elmefors, Elin and Eriksson, Ann Kristin and Ljung, Emelie and Renman, Gunno
Title:Phosphorus in soil treatment systems
Subtitle:accumulation and mobility
Series Name/Journal:Water research
Year of publishing :2014
Depositing date:16 January 2015
Page range:42-52
Number of Pages:11
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Accepted version
Full Text Status:Public
Agris subject categories.:P Natural resources > P10 Water resources and management
P Natural resources > P30 Soil science and management
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Environmental Sciences (social aspects to be 507)
(A) Swedish standard research categories 2011 > 2 Engineering and Technology > 207 Environmental Engineering > Other Environmental Engineering
Agrovoc terms:soil, wastwater treatement, phosphorus, specrtoscopy, environment
Keywords:on-site wastewater treatment, septic system, phosphorus leakage, column studies, removal mechanisms, X-ray absorption spectroscopy
Permanent URL:
Additional ID:
Type of IDID
Web of Science (WoS)000341348500005
ID Code:11632
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Soil and Environment
(S) > Dept. of Soil and Environment
Deposited By: SLUpub Connector
Deposited On:16 Jan 2015 14:04
Metadata Last Modified:09 Sep 2020 14:16

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