Journal cover Journal topic
Drinking Water Engineering and Science An interactive open-access journal
Journal topic

Journal metrics

CiteScore value: 2.2
CiteScore
2.2
SNIP value: 0.828
SNIP0.828
SJR value: 0.391
SJR0.391
Scimago H <br class='widget-line-break'>index value: 16
Scimago H
index
16
Preprints
https://doi.org/10.5194/dwes-2020-13
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/dwes-2020-13
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

  08 Jun 2020

08 Jun 2020

Review status
This discussion paper is a preprint. It has been under review for the journal Drinking Water Engineering and Science (DWES). The manuscript was not accepted for further review after discussion.

Comparison between constant and variable chlorine decay models applied to urban water supply network

Ababu T. Tiruneh1, Tesfamariam Y. Debessai2, Gabriel C. Bwembya2, and Stanley J. Nkambule1 Ababu T. Tiruneh et al.
  • 1University of Eswatini, Department of Environmental Health Science, P.O. Box 369, Mbabane, Eswatini
  • 2University of Eswatini, Department of Chemistry, Private Bag 4, Kwaluseni, Eswatini

Abstract. Monitoring of chlorine residual in water distribution systems is necessary not only for ensuring potable water quality but also prevent emergence of disinfection by-products due to excess chlorination. Modelling work for chlorine residual was carried out for water supply distribution network of a town using both second order and first order reaction rate models. For the development of the model, the bulk reaction decay rate was determined in the laboratory using bottle testing while the wall decay rate was determined by calibration of the water quality model using field residual chlorine concentration measurements. The model results show that there is no significant difference in the residual chlorine between the two models or the cost saving that result in terms chlorine usage for the range of initial chlorine dosages anticipated. Constant rate chlorine model is more conservative and offers additional safety in terms of chlorine residual present. Significant differences only occur at excess chlorine residual concentration within the distribution system above the intended maximum residual to be attained. Further research that relates the chlorine dose with the water quality characteristics is necessary to make a more general evaluation.

Ababu T. Tiruneh et al.

Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Ababu T. Tiruneh et al.

Ababu T. Tiruneh et al.

Viewed

Total article views: 242 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
142 75 25 242 23 26
  • HTML: 142
  • PDF: 75
  • XML: 25
  • Total: 242
  • BibTeX: 23
  • EndNote: 26
Views and downloads (calculated since 08 Jun 2020)
Cumulative views and downloads (calculated since 08 Jun 2020)

Viewed (geographical distribution)

Total article views: 259 (including HTML, PDF, and XML) Thereof 259 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Saved

No saved metrics found.

Discussed

No discussed metrics found.
Latest update: 29 Oct 2020
Publications Copernicus
Download
Citation