Influent Piping
1. Assure that piping is installed correctly and properly supported.
2.Make sure there are no high points in the influent piping where air could get trapped and affect flow volume.
3. Air test the piping or fill with fluid and make sure there are no leaks.
4.Open all valves when piping is ready to be used.
MBBR Tank
1. After construction, make sure all debris is removed from the tank and vent is open and clear.
2. Check all flanges for gaskets and bolt tightness.
3. Make sure all piping is adequately supported from the walls and floor and all anchor bolts are tight.
4. Make sure inlet check valve is installed correctly and flow is in the proper direction. Make sure the swing plate
moves freely and all gaskets are in place and bolts tightened.
5.Check the outlet screen for gaskets and bolts for tightness and that overflow screen is installed correctly.
6. If installed, check the drain screen and piping for gaskets and bolts for tightness. Make sure the drain valve on
the piping outside the tank is operable and is closed.
7.Verify the proper installation and operation of the high-water alarm float.
8.Fill the tank with clean water and let stand overnight to check for leaks. lf the water level drops overnight,refill and let stand another 24-hours. lf the water level still drops, check for and repair any leaking joints or connections.
Blowers
1.Install the blowers in accordance with the manufacturer's directions and requirements. Make sure all belts are properly positioned and there is oil in each blower.
2. Check all blower piping flanges for gaskets and bolt tightness.
3.Make sure blower piping is adequately supported from the ground and all support anchor bolts are tight.
4. Check the blower air release valves for proper calibration and operation.
5.Check and make sure all blower butterfly valves are open and check valves are operational.
6.Check for proper voltage to each blower motor.
7.While the tank is full of clean water, operate each blower in Hand mode and check for proper rotation direction and that aeration diffusers are all working. The tank should be completely mixed with uniform
aeration. Adjust the air valves as required for proper aeration.Operate each VFD in Hand mode and check for proper speed control of the blower motors.
MBBR Media Installation
1. Drain half of the clean water from the tank using the drain valve. If no drain valve, pump the water from the
tank.
2. Open the roof access hatches and begin dumping in the MBBR media until the tank is half-full of media.Turnon one of the blowers and begin mixing the tank and adding media until the proper amount of media has beeninstalled. If the water level in the tank is not up to the outlet screen elevation, add water until it is flowing through the screen and into the clarifier.
3.Continue to aerate and mix the tank until all of the media has been wetted and suspended in the tank and the clarifier is full.
Clarifier
1. Check the clarifier tank for leaks and that all piping connection gaskets are correct and bolts are tight. Check the sludge discharge piping for proper installation and make sure all valves are open.
2.Allow the clean water to flow through the clarifier and to the effluent disposal location. While the tank is flowing, turn on the waste sludge pump in Hand and verify proper rotation and operation. The rotation may need to be verified prior to the pump being installed in order to see the impeller direction of operation.
3.Verify the proper installation and operation of the high and low water alarm floats.
Process Startup
1. Once all equipment and controls are started up and verified, the process startup may commence.
2. Prior to wastewater being delivered to the MBBR tank, chemical dosing and proper mixing should be provided by the owner. Influent wastewater shall be cooled to no more than 100°F prior to discharge into the MBBR.
Wastewater dosing to the MBBR may begin. This is a natural biological process and typical natural biofilm development time is anywhere from 2 - 8 weeks depending on multiple factors. If regulatory effluent quality is required prior to the natural biofilm development time, the MBBR tank may be seeded with clean activated sludge mixed liquor from a properly operating wastewater treatment facility. The biofilm development process could still take several weeks to provide adequate effluent quality so provisions should be made to either store the effluent or recycle it until the biological process is completely underway and operational.