XIEWen-xi,YUChuan,LIChao,et al.Effect of Free Chlorine Maintenance Disinfection on Controlling Pipeline? induced Chlorine Consumption[J].China Water & Wastewater,2023,39(19):41-46.
Effect of Free Chlorine Maintenance Disinfection on Controlling Pipeline? induced Chlorine Consumption
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第19期
Page:
41-46
Column:
Date of publication:
2023-10-01
- Keywords:
- free chlorine maintenance disinfection; pipeline-induced chlorine consumption; residual chlorine decay; water supply network
- Abstract:
- The rapid decay of residual chlorine in pipe network water has posed significantly threat to the safety of drinking water quality. This paper investigated the performance of free chlorine maintenance disinfection to control chlorine decay at different flow rates in a pilot-scale pipeline reactor, and analyzed the mechanism of this measure to inhibit residual chlorine decay by means of first-order kinetics model and self-developed refined total chloramine decay model (RTCDM). Free chlorine maintenance disinfection effectively reduced the reaction activity of pipe wall, and then inhibited the chlorine consumption of pipe wall. In addition, the chemical cost of this measure at the phase of free chlorine disinfection was approximately 26.2% lower than that of the conventional chloramine disinfection method, indicating that it was a feasible method for controlling residual chlorine decay.
Last Update:
2023-10-01