The stormwater cannot receive polluted wash water and the treatment plant is not designed to receive added loadings during rainfall events
Clean Rainwater falling on the catchment is directed via the stormwater network to a waterway adjacent to the property
Aircraft wash water arriving on the pavement needs to be directed to an onsite waste water retention and pre-treatment system pre discharging to sewer
Tarmac Aircraft Washing
During day to day operation absent aircraft washing the diversion valves are positioned to direct clean rainwater discharge to the natural water course.
When aircraft washing commences the interfaced hydraulic (water) drive line opens the trade waste diversion valve directing the polluted water stream to the onsite waste water treatment plant
When washing ceases the system is pre-programmed to capture any wash down water residue directing it to the treatment plant, then defaults to stormwater discharge mode.