Potable Water

In order to operate and efficiently control the drinking water treatment process, it is essential to measure and record the water quality for trend analyses from raw water intake, to purification, storage and distribution. With SWAN’s analytical instruments, the customer is receiving an application specific instrument setup providing easy operation, low maintenance and rapid plant integration.

SWAN’s on-line analysers enable a systematic preventive approach to drinking water safety covering the parameters below.

Chlorine, Ozone, Chlorine dioxide

Two different technologies are available for monitoring free chlorine, ozone, chlorine dioxide or monochloramine. The choice of the technology depends on water treatment methods:

  • Amperometric three electrode system TRIDES: Treatment with free chlorine, chlorine dioxide or ozone. Dual channel system (chlorine and pH) will provide on-line conversion from hypochlorous acid to free chlorine without reagents.
  • Process photometers CODES: Work under the same conditions as the amperometric system. In addition they can be used for monochloramine. pH compensation is not necessary because the reagents contain a buffer solution.

Amperometric systems have lower cost of ownership (no reagents). Under unknown conditions (and at pH above 8.5) it is safer to use a photometer.

  • CHEMATEST portable photometer: A high precision portable photometer is needed for calibration in any case.

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