XU Xiao-yan,LIU Yu-hong,ZHAO Hong-jun,et al.Analysis on Change Law of Trihalomethane in Dual-source Water Supply Networks[J].China Water & Wastewater,2022,38(2022 1 1):47-52.
Analysis on Change Law of Trihalomethane in Dual-source Water Supply Networks
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
2022 1 1
Page:
47-52
Column:
Date of publication:
2022-01-01
- Keywords:
- dual?source raw water; dual?source water supply network; trihalomethane; high bromine water
- Abstract:
- Profile of trihalomethane in water supply networks with dual sources (Taihu Lake and Yangcheng Lake) was explored. Water samples from water supply system of S city after treatment by waterworks A (Taihu Lake water as source water) and B (Yangcheng Lake water as source water) were collected respectively, the changes of trihalomethane and residual chlorine with water supply distance were discussed, and the linear regressions of trihalomethane-residual chlorine and trihalomethane-water supply distance were analyzed. In the separate water supply network of waterworks A and B, the concentration of trihalomethane increased and the residual chlorine decreased with the increase of water supply distance. In water supply network supplied simultaneously by waterworks A and B, the concentration of trihalomethane increased first and then decreased from waterworks A to waterworks B, while the residual chlorine decreased first and then increased. At hydraulic junction point located at 10 km in the water supply network, the residual chlorine was the lowest and the trihalomethane concentration was the highest. Linear regression analysis showed that there was a significant correlation between the concentration of trihalomethane and residual chlorine/water supply distance, and temperature had a great influence on the model.
Last Update:
2022-01-01