Airport Deicing Fluid Treatment
Dynatec provides a unique system that treats spent airport deicing fluid to provide reuse quality water and recover glycol
Treatment and Recovery
The runoff of deicing fluid from aircraft has historically been allowed to drain to ground water or streams. This practice is being discontinued at some airports as regulatory enforcement increases. The deicing fluid is typically formulated from either propylene or ethylene glycol and water with additives. The waste stream contains high levels of COD & BOD, which is toxic and causes fish kills and other environment degradation.
Historically, the only on site option for treatment has been large biological treatment systems. Dynatec's innovative treatment process uses membrane filtration without biologically treating the wastewater with far less space. Additionally, glycol is recovered from the process.
- Recovery of glycol
- Low cost treatment
- Small space required
- Unattended operation
- Minimal disposal costs
- Heavy metals
Dynatec has provided comprehensive integrated systems to produce purified water that can be safely discharged to sewer without surcharges. Further, the system produces a concentrate of glycol that is sold to others or re-blended as deicing fluid. The system provides the airport with many benefits including:
- High quality purified water to meet stringent authority discharge limits
- High concentration of glycol in the concentrated waste for use in other applications or for re-blending new deicing fluid
- Elimination of treatment chemicals
- Ability to treat a constantly changing waste concentration without process upsets
- Minimal operator attention required
- Low operating and maintenance cost
Dynatec has several systems operating, processing forty to seventy thousand gallons per day at glycol concentrations varying from one half of one percent to three percent (0.5% - 3%). The systems consistently produce water with COD less than 200 ppm. The systems concentrate glycol up to twenty percent. A secondary evaporator system produces a concentrate greater than ninety percent glycol.
Dynatec can provide the system as a capital project, or on a Contract Service basis whereby Dynatec designs and builds a complete system that is owned, operated and maintained by Dynatec (DBOOM). The charge for Contract Service is volume based, incurring no capital or other expenses for the airport.