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Free & Total Chlorine in Wastewater Treatment

Free & Total Chlorine in Wastewater Treatment

In municipal wastewater facilities, chlorination is a fundamental element of the treatment process, essential to disinfect the water and eliminate harmful pathogens. It can also benefit the activated sludge process and even mitigate greases, oils and odors across the treatment application. After chlorination is completed and disinfection confirmed, the wastewater then needs to be dechlorinated to almost undetectable levels to ensure the downstream environment is not exposed to harmful levels of chlorine or chlorine byproducts. Proper monitoring of chlorine is critical throughout the wastewater treatment process to ensure effective disinfection and a safe water supply. AlpHa’s amperometric RC67 and RC68 chlorine sensors provide a continuous, direct measurement of chlorine in parts per million (ppm).
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wastewater treatment plant tanks aeration and biological purification of sewage
  • Ranges:
    • 0 – 2 ppm / 0 – 5 ppm / 0 – 10 ppm / 0 – 20 ppm / 0 – 100 ppm
    • Adjustable within 0 – 100 ppm
  • Typical Calibration Frequency: Monthly
  • Response Time: T90 120 Seconds
  • Resolution: 0.01 ppm 
  • Accuracy: 0.2 ppm or 4%, whichever is greater
  • Temperature Range: 0 to 50°C
  • pH Range: pH independent between 6 to 9 and pH compensation available outside this range
  • Flow Rate:
    • Minimum: 30 L/hr (0.6 cm/s)
    • Maximum: 60 L/hr (1.3 cm/s)
  • Sensor Type: 3-Electrode Amperometric with Membrane
  • Warranty: 12 Months
  • Technology
    • Free Chlorine
    • Total Chlorine
    • Chlorine Dioxide
  • Form Factor
    • Process Body
    • Custom Options Available
  • Housing Material Options
    • PVC / CPVC
    • ABS
    • Ryton
    • Custom Options Available
  • Thermistor Options
    • Integrated Temperature Compensation
  • Integrated Insertions
    • 1" Compression Fitting
    • 3/4" NPT
    • Custom Options Available
  • Analog
    • 4 – 20 mA
    • 0 – 5 V
  • Digital
    • RS-485 MODBUS RTU
  • Cables & Connectors
    • Tinned Leads
    • Custom Options Available