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- Title
A study on evaluation of the pipe wall decay constants of residual chlorine and affecting factors in reclaimed water supply system.
- Authors
Lee, H. D.; Park, J. H.; Kang, S. W.; Kong, M. S.
- Abstract
Wall decay reaction of residual chlorine in reclaimed water was evaluated through experiments using the PVC pipe reactor under the lab test conditions. As a result of evaluating the biofilm formation in the supply pipe of reclaimed water, it was confirmed that there were limitations to prevent reclaimed water supply system from the biofilm formation even though residual chlorine existed in reclaimed water. It was confirmed that biofilm was a dominant factor to increase the wall decay constants. The range of wall decay constants under the lab test conditions was within 0.012–0.20 m/d. It implies that wall decay constants showed great dependence on water temperature, initial chlorine concentration, and pipe diameter. Wall decay constants appeared to increase as water temperature increased. Wall decay constants were higher at lower initial chlorine concentration regardless of water temperature and pipe diameter. Depending on pipe diameter, the increased pipe diameter was led to the decreased wall decay constant.
- Subjects
DECAY constants; WATER supply; WATER disinfection; CHLORINE; POLYVINYL chloride pipe; WATER temperature; PIPE
- Publication
Desalination & Water Treatment, 2015, Vol 53, Issue 9, p2378
- ISSN
1944-3994
- Publication type
Article
- DOI
10.1080/19443994.2014.927120