Any operator who has worked in wastewater treatment for any length of time knows the importance of a good maintenance program. Maintenance can make the difference between operating well and being in violation.Facilities are constantly being upgraded and expanded, often with new processes, such as nutrient removal. Besides major changes in the way wastewater is treated, that means substantial changes in the approach to maintenance. More complex equipment means more and different maintenance tasks and possibly a revamping of a plant’s entire PM program.Maintenance can be defined as “work that is done regularly to keep a machine, building, or piece
