Wall Decay Coefficient of Combined Chlorine in a Drinking Water Distribution System

• Author / Creator

  Liu, Megan J.

• Using water quality models to predict disinfectant concentrations in water distribution systems requires a knowledge of the wall decay coefficient. In this study, field water sampling was conducted in conjunction with a SynerGEE Water hydraulic model for an area of the water distribution system of the City of Edmonton to calibrate a wall decay coefficient for combined chlorine. Using the least squares method, a unique wall decay coefficient, 0.0295 m/d, was obtained. Using the same method it was found that the wall decay coefficient was 0.0455 m/d for a sub-section of the studied area with predominately cast iron pipes, and 0.0160 m/d for another sub-section where the pipes had been extensively renewed. By identifying wall decay coefficients for individual areas using this method, it is feasible to turn SynerGEE Water hydraulic model into a working model to predict water quality for the City of Edmonton.

• Subjects / Keywords

  • Chloramine
  • Bulk Decay
  • Wall Decay
  • Combined Chlorine
  • SynerGEE Water
  • Water Distribution System
  • Water Quality Modeling

• Graduation date

  Fall 2013

• Type of Item

  Thesis

• Degree

  Master of Science

• DOI

  https://doi.org/10.7939/R3540S

• License

  This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.