供水管网内源污染风险与高效清洗分析研究OA

The formation mechanism of"growth rings"in water supply networks and the potential water quality risks were analyzed,and the crucial significance of efficient daily pipeline flushing for ensuring water quality safety were clarified.Through on-site experiments,the flushing efficiency of single-phase hydraulic flushing,air-water pulse flushing,and three-phase pulse flushing were compared and evaluated.The results show that the passive mainte-nance model relying solely on routine single-phase hydraulic flushing can't meeting the requirements of ensuring the biological and chemical stability of water supply network water quality.In response to the differences in efficiency of different flushing technologies,a preventive maintenance strategy was proposed from three aspects of optimization of management mechanisms,improvement of technical specifications and intelligent development to realize the re-fined operation and maintenance of water supply networks and ensure the water quality safety of the entire water supply process from the water source to the user's tap.