Aerospace & Government
In the winter months aeroplanes, runways and landing strips are de-iced with the help of chemicals resulting in the pollution of storm water. Consequently, its disposal may have an extreme impact on wastewater treatment plants or public water. Hence, the continuous monitoring of this storm water is of special importance.
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Using the proper online process instrumentation helps to avoid high costs, e.g. by preventing product losses or losses of heating energy.
3D application scheme of water treatment at airports
Effective water management
De-icing of runways and aircrafts is necessary due to safety reasons since ice and snow negatively influence the weight and aerodynamics of an aircraft.
A mixture of chemicals – de-icing agents and thickening agents – is used to keep airports and planes free from ice and snow. These chemicals are mainly:
This highly adhesive chemical mixture works like a sponge so that a certain amount of the winter precipitation is absorbed and liquified.
These adhesive characteristics of wastewater of de-iced surfaces are the main challenges to monitoring systems:
Main goal is cost-effective water management and discharge. The least expensive way to discharge effluents is into public water bodies. However, the critical values for public discharge are very low:
Example: For the river Rhine (Germany) the discharge regulation stipulates 150 mg/l O2
Challenges of effluent discharge from airports
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