System performance of the full-scale UV systems at SWBD and IWC will be monitored to provide operational and cost data, which will help decision makers at utilities in determining whether or not it is cost effective to use UV disinfection. Each system will be monitored for flow and power usage, UV sensor output, hours of operation, cleaning and maintenance, and parts and labor costs. System performance data will be collected by the plant operators and recorded in the operators log, or electronically on (Excel) spreadsheets. Specific monitoring requirements for each system parameter are provided below.
Flow Monitoring: The total flow rate being treated by the UV disinfection system should be recorded daily in gallons per day. Flow measurement readings should report daily peaks, daily lows, and the average flow per day.
Power Usage: The total power required to run the full scale UV disinfection system should be recorded daily. The power used by the UV electronics and UV cleaning equipment should be reported as kilowatt-hours used and total hours of operation.
UV Sensor Output: The UV intensity from electronic UV sensor(s) should be recorded daily as percent intensity. Sensor readings should be taken in triplicate, and reported as an average.
Cleaning and Maintenance: Cleaning and maintenance activities should be recorded daily, and include specific problems and total down time in minutes.
Parts and Labor Costs: On a monthly basis, report all parts and labor required and associated costs for maintaining the UV system in operational condition.