Publication detail

Wastewater treatment efficiency in vertical flow constructed wetlands using recycled aggregates

ZEDNÍK, O. KRIŠKA-DUNAJSKÝ, M.

Original Title

Wastewater treatment efficiency in vertical flow constructed wetlands using recycled aggregates

Type

conference paper

Language

English

Original Abstract

The article discusses the efficiency of vertical subsurface flow filters in wastewater treatment wetlands, where the main filtration layer is composed of recycled aggregates. To determine the efficiency of the vertical filter using modified recycled aggregates, three test columns were created. The first column contained natural gravels, while the second and third columns used masonry (RMA) and concrete aggregates (RCA). The test filters were loaded with wastewater from a combined sewer system, with non-dissolved substances removed through sedimentation and filtration. The wastewater was intermittently applied to the filter bodies. During the testing period, the RMA filter column achieved an efficiency of up to 99.9% for NH4+–N, 83.9% for COD, and 40.1% for TP. The RCA filter column had an efficiency of 99.6% for NH4+–N, 77.2% for COD, and 42.3% for TP. These values are comparable to the efficiencies of filter columns filled with natural aggregates (NA). These results suggest there is a potential for RMA or RCA to replace NA. This would lead to the conservation of natural resources and a reduction in the initial cost of vertical filters.

Keywords

vertical subsurface flow filters, constructed wetlands, filter material, recycled aggregates, semi-operational testing

Authors

ZEDNÍK, O.; KRIŠKA-DUNAJSKÝ, M.

Released

1. 12. 2023

Publisher

STEF92 Technology

Location

Bulgaria

ISBN

1314-2704

Periodical

International multidisciplinary geoconference SGEM

State

Republic of Bulgaria

Pages from

1

Pages to

8

Pages count

8

BibTex

@inproceedings{BUT185657,
  author="Ondřej {Zedník} and Michal {Kriška-Dunajský}",
  title="Wastewater treatment efficiency in vertical flow constructed wetlands using recycled aggregates",
  booktitle="Proceedings of 23nd International Multidisciplinary Scientific GeoConference SGEM 2023",
  year="2023",
  journal="International multidisciplinary geoconference SGEM",
  pages="1--8",
  publisher="STEF92 Technology",
  address="Bulgaria",
  issn="1314-2704"
}