LIQing-hua,HOU Ying-na,FEI Xia-li,et al.Performance Analysis on Pilot-scale Direct Drinking Water System in Buildings[J].China Water & Wastewater,2022,38(17):34-38.
Performance Analysis on Pilot-scale Direct Drinking Water System in Buildings
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第17期
Page:
34-38
Column:
Date of publication:
2022-09-01
- Keywords:
- direct drinking water system in buildings; water from municipal pipe network; ozone disinfection
- Abstract:
- Direct drinking water system in buildings is an optimization of the existing water supply system, which can improve the drinking water quality for residents in old residential communities in a short time. A pilot test was carried out to investigate the performances of three secondary disinfectants for disinfection of raw water from a municipal pipe network, and the effect of direct drinking water system on improvement of municipal pipe network water quality was discussed. When the ozone generator was operated for ten minutes every one hour, excellent disinfection performance was obtained, and formaldehyde and bromate were not detected, indicating that the disinfection performance was better than that of sodium hypochlorite and chlorine dioxide. The comparison of monitoring data showed that turbidity, chromaticity and total number of bacteria in the water from the direct drinking water system were significantly better than those from the municipal pipe network, and the sensory characteristics and biological safety of drinking water were improved. In addition, the operational cost was increased by approximately 0.13 yuan/L at the highest after the installation and operation of the direct drinking water system.
Last Update:
2022-09-01