An integrated performance assessment framework for water treatment plants

作者：Zhang Kejiang; Achari Gopal^*; Sadiq Rehan; Langford Cooper H; Dore Mohammed H I

来源：Water Research, 2012, 46(6): 1673-1683.

DOI：10.1016/j.watres.2011.12.006

• Performance assessment
• Water treatment plant operation and management
• Reliability
• Robustness
• Quantitative Microbial Risk Assessment (QMRA)

An innovative framework for the performance assessment of a traditional water treatment plant (WTP) is presented that integrates the concepts of reliability, robustness, and Quantitative Microbial Risk Assessment (QMRA). Performance assessment for a WTP comprised of three units (i.e., unit 1: Coagulation/Flocculation and Sedimentation; unit 2: Filtration, and unit 3: Disinfection) was conducted. Performance functions for units 1, 2, and units 1 and 2 combined, were constructed by integrating turbidity robustness indices. Performance function for chlorine disinfection was developed based on the difference between achieved and required CT values. A health-based performance function was developed by comparing the target daily infection rate to the site-specific infection rate. It was used to identify whether the health-based target was met during the failures of units 1 to 3. Results obtained from the proposed performance functions can be used by operators to ensure that multiple barriers perform successfully under variable conditions.

• 出版日期2012-4-15