Advertisement
percentage of settled solids volume (i.e. ½ full of solids equals 50%). If the settled material contains large pockets
of clear liquid, estimate the volume of these pockets and reduce the settled solids reading by that amount. A settled
solids reading of up to 80% indicates no adjustments are necessary. A settled solids level greater than 80% in the
aeration chamber indicates excessive solids and that the system should be pumped.
5.
If it is determined that pumping is required, contact a tank pumping service licensed by the local regulatory agency.
The septage or biosolids from the system must be removed and disposed of in a manner consistent with federal, state
and local regulations. Advise the pumping service that they will be pumping approximately 3,000 gallons for the Model
3780L system, 4,000 gallons for the Model 4730L system, or 4,500 gallons for the Model 5670L system.
6.
Turn off the air pumps and recirculation pump before tank pumping.
7.
Remove the access cover from the aeration and clarification chambers. Unplug the air pumps and disassemble the
unions located on the primary air connections. Remove the air pumps, primary air connections and support bases
from the aeration risers. Use the universal tool to bend flexible diffuser tubing and remove the diffuser drop pipe
assemblies. Connect the suction hose to the pump being used to evacuate the chamber.
8.
Activate the pump and remove the first aeration chamber contents. Pump each aeration chamber from the top down,
to remove biologically inactive material. Feed the hose down as the liquid is being evacuated from the aeration
chambers. It is not necessary to wash down the sidewalls or tank bottom. Pump only 75% of the volume out of
each aeration chamber to facilitate plant re-start. Once 75% of the volume has been removed from the first aeration
chamber, repeat these steps for the second aeration chamber. Replace the diffuser drop pipe assemblies. Reinstall
the support bases, primary air connections and air pumps. Reassemble the unions in the primary air connections and
plug in the air pumps. Replace the access covers.
9.
The Bio-Film Reactor tanks should be pumped after the aeration chambers. Remove the Bio-Film Reactor tank access
covers. Lower the hose into the influent chamber of the first Bio-Film Reactor tank until it contacts the bottom of the
tank. Withdraw the hose approximately 2 inches. Completely pump 100% of the contents from the chamber and rinse
the media with a hose during tank pumping. Repeat these steps for the second Bio-Film Reactor tank. Replace the
Bio-Film Reactor tank access covers.
10. Next, pump the anoxic chambers. Remove the anoxic chamber access covers. Use the universal tool to bend flexible
mixing bar tubing and remove the mixing bar drop pipes to allow access for the suction hose. Lower the hose until it
contacts the bottom of the tank. Withdraw the hose approximately 2 inches. Completely pump 100% of the contents
from each anoxic chamber. Reinstall the mixing bar drop pipe assemblies and replace the access covers.
11. The final chamber to pump is the pretreatment chamber. Remove the pretreatment chamber access cover. Break
up the scum mat to facilitate pumping. Lower the hose until it contacts the bottom of the tank. Withdraw the hose
approximately 2 inches. Activate the pump and remove 100% of the chamber contents. It is not necessary to wash
down the sidewalls or tank bottom. If solids are so concentrated that the suction hose cannot withdraw them, tank
contents may be backflushed to break up the solid matter. Replace the pretreatment chamber access cover.
12. After pumping, refill all chambers to capacity with clean water. Return all plumbing and equipment to its properly
installed location. Replace any access covers that were removed. Turn on power to the air pumps and the recirculation
pump. Check for proper operation of all equipment.
Troubleshooting
This troubleshooting section provides efficient solutions to the most common problems encountered in the operation of the
Hydro-Kinetic system.
1.
Liquid in tank at level of high water alarm float: system is flooded due to obstructions in the flow equalization
devices, outlet, effluent line or disposal field. Determine cause and remove obstructions, or make repairs as required.
Be sure to check effluent disposal system for proper operation.
2.
No rolling action in aeration chamber:
• Air pump is pumping air but there is an obstruction in the line between the air pump and diffuser: disassemble air
line and remove obstruction.
• Diffuser is plugged: remove and clean diffuser.
• Air pump is not running: check power supply to air pump.
• Air is escaping through a leak in the plumbing assembly between air pump and diffuser: identify and repair air leak.
If necessary, remove the diffuser, diffuser drop pipe assembly and primary air assembly from the aeration chamber
and use a soapy water solution to thoroughly coat the plumbing and check for bubbles. Repair air leak and retest.
Control Center Alarming
Page 10
Advertisement
