Waste Oil Centers
Currently there are four Used Oil Collection Facilities (UOCF) within the RPA that burn on-specification used oil for energy recovery. Each UOCF has five components:
- outdoor used oil collection and testing station.
- outdoor on-specification storage tank.
- in-door storage tank.
- outdoor used oil burner.
- in-door closed loop heat exchanger(s).
The four UOCFs are open to the general public with established days and hours of operation. The four UOCFs within the RPA are located at:
The general public is encouraged to bring their on-specification used oil to a UOCF. The used oil is removed from the public container(s) and placed into the used oil collection station. Once the used oil has been drained from the container(s) it is returned to the public for reuse. All off-specification, sludges, water, impurities or contaminates will not be accepted. All participants disposing of their used oil are required to fill out and sign a certification form.Once the used oil collection station is full, or if an individual brings in a large volume of used oil, it is tested. All volumes of 55 gallons or more of used oil are tested to verify that it is indeed on-specification. All volumes tested are recorded and the testing operator certifies the test results. The tested on-specification used oil is then pumped into the outdoor storage tank. The outdoor storage tanks have been sized to provide the necessary volume to provide heat for the facility during the normal winter months, October through April.All on-specification used oil is pumped into the in-door storage tank where it is heated to room temperature for consistency. It is then pumped back outside, to be mixed with air and injected into the combustion chamber. Surrounding the combustion chamber are heating coils filled with heat absorbent liquid that is then pumped to the in-door heat exchangers. The heat absorbent liquid pass through the heat exchangers, release their energy and return back to the heating coil. The system is a closed loop system, with no in-door combustion occurring.
To service the outlying areas of Bridgeport, East Wenatchee, Mansfield, Rock Island, and rural Douglas County, the DCSWPO purchased five 250-gallon portable used oil tanks. Each tank is specifically designed to fit within the bed of a ¾ ton pick-up. These portable used oil tanks are located at the City of Bridgeport Maintenance Shop, the City of Rock Island Maintenance Shop, and the Douglas County Maintenance Shop in Waterville. For those households who traditionally generate large volumes of used oil but are unable or unwilling to transport the used oil to the UOCFs, appointments can be made to have the used oil tested and pick-up on-site if storage capacity is remaining. Once the household has scheduled a pick-up date and time, the jurisdiction that made the appointment will load the portable tank and drive to the individual’s home/site. Once on site, the used oil will be tested to determine if it is on-specification. If it tests on-specification, the used oil will be pumped into the portable tank and transported back to the used oil collection facility once the proper paperwork has been completed. If the used oil tests off-specification, the homeowner will be notified, the used oil rejected and the individual notified of other disposal options.