Assessing and modeling DBP formation in a water distribution system
Date Issued
2006
Date
2006
Author(s)
Kuo, Hsiu-Chih
DOI
zh-TW
Abstract
The purpose of the disinfection process to the water treatment plant is to ensure the water supply system security. However, the disinfection by-products (DBPs) formed during the disinfection process might cause the carcinogenic risk for human beings, which enhanced the concern of the issue of water supply system security by the academic sectors. The physical, chemistry and the biological factors would influence the DBPs formation in the distribution system. Therefore, using the sampling analysis and the in-situ experiment investigate the DBPs formation in the distribution system.
The research focuses on the Cheng-Chin Lake Waterworks and the water distribution system. The investigation is including the experiment of DBPs kinetics formation reaction and the effect of the water quality parameters and the operation factors on DBP formation in the water distribution pipe line and batch reactor. Combining the hydraulic analysis software Surfer and WaterCAD analyzes the hydraulic flows and water quality in the pipe network, which establishes and validates the DBPs formation predictive model in the water distribution system. By the assessment parameters of drinking water security system promotes the water supply security system and optimization operation in the waterworks.
Introducing the ozonation process treats the persistent organic matters is particular in the Cheng-Chin Lake Waterworks. The results of chlorination process reveal that the chlorine decay is including the initial, first-order and second-order reactions. The major disinfection by-products including THMs and HAAs is formed in the clear well. The THMs formation concentration increases obviously from second additive chlorine to pipeline during the chlorination process in the waterworks simulation. But HAAs formation is not corresponded to THMs formation. The development of the THMs predictive formation model is suitable for simulating the THMs formation in the clear well and water distribution system. Furthermore, the HAAs predictive model is good for predicting HAAs in the clear well. The treated water quality and DBPs formation concentration is excellent in the advanced water treatment plant. Therefore, the water supply system in the advanced water treatment more confirms drinking water safety.
CE Database subjects headings：Water supply system security, water distribution system, Cheng-Chin Lake water treatment plant, chlorination, chlorine decay, disinfection by-products（DBPs）formation, WaterCAD.
Subjects
供水安全
配水系統
澄清湖淨水廠
加氯程序
餘氯消減
消毒副產物生成
WaterCAD
Water supply system security
water distribution system
Cheng-Chin Lake water treatment plant
chlorination
chlorine decay
disinfection by-products（DBPs）formation
SDGs
Type
thesis
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