Retention soil filters for the treatment of sewage treatment plant effluent and combined sewer overflow

Andrea F. Brunsch, Pedro Zubieta Florez, Alette A.M. Langenhoff*, Thomas L. ter Laak, Huub H.M. Rijnaarts

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Retention soil filters (RSFs) are vertical flow constructed wetlands. They are mainly used for the treatment of combined sewer overflow or stormwater, and not operated during dry weather conditions. However, RSFs have been successfully tested as continuous post treatment for sewage treatment plant effluents. In this paper we present a new approach, namely dual usage of the retention soil filter. During dry weather the RSF is used for the polishing treatment of sewage treatment plant effluent and during overflow events, the retention soil filter treats the combined sewer overflow. This study was conducted at two pilot RSFs that were fed with sewage treatment effluent for four years. Removal of TOC, DOC, nutrients and 21 organic micropollutants was determined during six months at different sequences of regular effluent and overflow treatment conditions. TOC, DOC and nutrients, appearing in high concentration in combined sewer overflow, were effectively removed, and metformin and caffeine micropollutants showed >99% removal. Residues from this combined sewer treatment that were sorbed on filter material or stored in pore water were washed out directly after treatment when STP effluent infiltration was initiated. This effect declined within 20 h after combined sewer overflow treatment. Dry periods of 18 h between combined sewer and sewage treatment plant effluent feeding counteracted the wash out effects. The highest removal efficiency was found in the beginning of the feeding time of 28 h, indicating that shorter feeding cycles enhance the overall efficiency of the RSF. Finally, the results show that a single RSF system can successfully reduce emissions of TOC, DOC, nutrients and micropollutants to surface waters from two different emission pathways, i.e. from regular treated effluents and storm related sewer overflows. In conclusion, the dual usage of RSF is a promising approach and ready for upscaling and implementation.

Original languageEnglish
Article number134426
JournalScience of the Total Environment
Volume699
DOIs
Publication statusPublished - 10 Jan 2020

Fingerprint

Combined sewers
Sewage treatment plants
sewage treatment
Effluents
effluent
filter
Soils
soil
Nutrients
nutrient
Caffeine
Sewage treatment
Metformin
Sewers
Wetlands
upscaling
Polishing
Surface waters
Infiltration
constructed wetland

Keywords

  • Combined sewer overflow treatment
  • Constructed wetland
  • Micropollutants
  • Retention soil filter
  • Waste water treatment

Cite this

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title = "Retention soil filters for the treatment of sewage treatment plant effluent and combined sewer overflow",
abstract = "Retention soil filters (RSFs) are vertical flow constructed wetlands. They are mainly used for the treatment of combined sewer overflow or stormwater, and not operated during dry weather conditions. However, RSFs have been successfully tested as continuous post treatment for sewage treatment plant effluents. In this paper we present a new approach, namely dual usage of the retention soil filter. During dry weather the RSF is used for the polishing treatment of sewage treatment plant effluent and during overflow events, the retention soil filter treats the combined sewer overflow. This study was conducted at two pilot RSFs that were fed with sewage treatment effluent for four years. Removal of TOC, DOC, nutrients and 21 organic micropollutants was determined during six months at different sequences of regular effluent and overflow treatment conditions. TOC, DOC and nutrients, appearing in high concentration in combined sewer overflow, were effectively removed, and metformin and caffeine micropollutants showed >99{\%} removal. Residues from this combined sewer treatment that were sorbed on filter material or stored in pore water were washed out directly after treatment when STP effluent infiltration was initiated. This effect declined within 20 h after combined sewer overflow treatment. Dry periods of 18 h between combined sewer and sewage treatment plant effluent feeding counteracted the wash out effects. The highest removal efficiency was found in the beginning of the feeding time of 28 h, indicating that shorter feeding cycles enhance the overall efficiency of the RSF. Finally, the results show that a single RSF system can successfully reduce emissions of TOC, DOC, nutrients and micropollutants to surface waters from two different emission pathways, i.e. from regular treated effluents and storm related sewer overflows. In conclusion, the dual usage of RSF is a promising approach and ready for upscaling and implementation.",
keywords = "Combined sewer overflow treatment, Constructed wetland, Micropollutants, Retention soil filter, Waste water treatment",
author = "Brunsch, {Andrea F.} and {Zubieta Florez}, Pedro and Langenhoff, {Alette A.M.} and {ter Laak}, {Thomas L.} and Rijnaarts, {Huub H.M.}",
year = "2020",
month = "1",
day = "10",
doi = "10.1016/j.scitotenv.2019.134426",
language = "English",
volume = "699",
journal = "Science of the Total Environment",
issn = "0048-9697",
publisher = "Elsevier",

}

Retention soil filters for the treatment of sewage treatment plant effluent and combined sewer overflow. / Brunsch, Andrea F.; Zubieta Florez, Pedro; Langenhoff, Alette A.M.; ter Laak, Thomas L.; Rijnaarts, Huub H.M.

In: Science of the Total Environment, Vol. 699, 134426, 10.01.2020.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Retention soil filters for the treatment of sewage treatment plant effluent and combined sewer overflow

AU - Brunsch, Andrea F.

AU - Zubieta Florez, Pedro

AU - Langenhoff, Alette A.M.

AU - ter Laak, Thomas L.

AU - Rijnaarts, Huub H.M.

PY - 2020/1/10

Y1 - 2020/1/10

N2 - Retention soil filters (RSFs) are vertical flow constructed wetlands. They are mainly used for the treatment of combined sewer overflow or stormwater, and not operated during dry weather conditions. However, RSFs have been successfully tested as continuous post treatment for sewage treatment plant effluents. In this paper we present a new approach, namely dual usage of the retention soil filter. During dry weather the RSF is used for the polishing treatment of sewage treatment plant effluent and during overflow events, the retention soil filter treats the combined sewer overflow. This study was conducted at two pilot RSFs that were fed with sewage treatment effluent for four years. Removal of TOC, DOC, nutrients and 21 organic micropollutants was determined during six months at different sequences of regular effluent and overflow treatment conditions. TOC, DOC and nutrients, appearing in high concentration in combined sewer overflow, were effectively removed, and metformin and caffeine micropollutants showed >99% removal. Residues from this combined sewer treatment that were sorbed on filter material or stored in pore water were washed out directly after treatment when STP effluent infiltration was initiated. This effect declined within 20 h after combined sewer overflow treatment. Dry periods of 18 h between combined sewer and sewage treatment plant effluent feeding counteracted the wash out effects. The highest removal efficiency was found in the beginning of the feeding time of 28 h, indicating that shorter feeding cycles enhance the overall efficiency of the RSF. Finally, the results show that a single RSF system can successfully reduce emissions of TOC, DOC, nutrients and micropollutants to surface waters from two different emission pathways, i.e. from regular treated effluents and storm related sewer overflows. In conclusion, the dual usage of RSF is a promising approach and ready for upscaling and implementation.

AB - Retention soil filters (RSFs) are vertical flow constructed wetlands. They are mainly used for the treatment of combined sewer overflow or stormwater, and not operated during dry weather conditions. However, RSFs have been successfully tested as continuous post treatment for sewage treatment plant effluents. In this paper we present a new approach, namely dual usage of the retention soil filter. During dry weather the RSF is used for the polishing treatment of sewage treatment plant effluent and during overflow events, the retention soil filter treats the combined sewer overflow. This study was conducted at two pilot RSFs that were fed with sewage treatment effluent for four years. Removal of TOC, DOC, nutrients and 21 organic micropollutants was determined during six months at different sequences of regular effluent and overflow treatment conditions. TOC, DOC and nutrients, appearing in high concentration in combined sewer overflow, were effectively removed, and metformin and caffeine micropollutants showed >99% removal. Residues from this combined sewer treatment that were sorbed on filter material or stored in pore water were washed out directly after treatment when STP effluent infiltration was initiated. This effect declined within 20 h after combined sewer overflow treatment. Dry periods of 18 h between combined sewer and sewage treatment plant effluent feeding counteracted the wash out effects. The highest removal efficiency was found in the beginning of the feeding time of 28 h, indicating that shorter feeding cycles enhance the overall efficiency of the RSF. Finally, the results show that a single RSF system can successfully reduce emissions of TOC, DOC, nutrients and micropollutants to surface waters from two different emission pathways, i.e. from regular treated effluents and storm related sewer overflows. In conclusion, the dual usage of RSF is a promising approach and ready for upscaling and implementation.

KW - Combined sewer overflow treatment

KW - Constructed wetland

KW - Micropollutants

KW - Retention soil filter

KW - Waste water treatment

U2 - 10.1016/j.scitotenv.2019.134426

DO - 10.1016/j.scitotenv.2019.134426

M3 - Article

VL - 699

JO - Science of the Total Environment

JF - Science of the Total Environment

SN - 0048-9697

M1 - 134426

ER -