Monitor for even air delivery to aeration tanks and the distribution within the tank. Repair systems immediately if needed.
Review your aeration tanks to assess if one can be idled.
Install variable speed drives to operate the blower at an appropriate speed.
Consider upgrading to a high-speed turbo blower for maximum efficiency.
Check the sheave sizes on the motor and blower to identify the speed of the unit to identify if the speed can be reduced.
Check discharge pressure of your blower to assess if the diffusers are dirty or a valve is partially closed.
Pumping
Check if any valves are closed or throttled on the discharge. Obtain kW readings and flow measurements on pump motor to identify its efficiency.
Obtain power bills to check if there have been any noticeable changes.
Note if any pumps are exhibiting excessive vibration during operation.
Identify the pump you have had the most problems with and assess if a change in pump selection would resolve the problem, generally most pumps are oversized for their application.
Review the load factor and length of time a pump is operating to assess if a smaller pump would help or a variable speed drive.
Check that all appurtenances in the force main are properly working (such as a pressure release valve is functioning and not air binding the pump).
Lighting
Turn lights off when you leave an area and use natural lighting whenever possible.
Use timers and occupancy sensors and keep them properly set (e.g. no outside lights during the day).
Replace existing lights with newer, more energy-efficient LEDs, CFLs or T-8 lamps.
Utilize day lighting in building renovations.
Shade windows that are receiving direct sun.
Cooling
Make sure all exterior walls, ceilings and wall cavities are properly insulated.
Keep doors and windows closed when running your air conditioning system.
Consider applying ENERGY STAR® “cool roof” material to your roof.
Install an Energy Management System (EMS) to control cooling systems.
Choose ENERGY STAR® equipment when replacing cooling systems.