Metrohm AG

Monitoring Total Carbon for straightforward management of runoff from de-icing episodes at airports

0

Source: Metrohm AG

During winter operations vast areas of airport runways, taxiways, and aprons are cleared of ice and snow using acetate type chemicals and airplane wings are de-iced with glycol based antifreeze. During these seasonal de-icing episodes the runoff water suddenly becomes heavily contaminated with organics and needs to be diverted to a treatment/recovery plant or holding ponds. Total Carbon (TC) is an ideal parameter to detect the moment highly polluted runoff water collects at the discharge point enabling suitable, cost efficient management of such waters by airport operators. The application is described in Metrohm Applikon Process Application Note AN-PAN-1023.

The ADI 7010 TOC Analyzer is a dual-ranging Total Carbon Analyzer operating in low range mode under normal conditions. Once the concentration of Total Carbon increases beyond a set threshold value (an indication of a de-icing period), the Analyzer automatically switches to high-range mode by diluting the sample. As the pollution episode passes, the Analyzer will switch back to low range (non-diluted sample) once the concentration drops below a specified value followed by a short conditioning time.

With each change of concentration range an external alarm can be sent to the water treatment control system, where corrective action can be taken regarding the handling of the runoff water.

Customer comments

No comments were found for Monitoring Total Carbon for straightforward management of runoff from de-icing episodes at airports. Be the first to comment!