Swimming Pool Chlorination

Since the 1970’s, we offered solutions for salt water pool chlorination, from the initial static polarity technology to the self-cleaning product based on current reversal technology.

Say goodbye to chlorine odors, irritated eyes, hair damage and faded swimsuits caused by excessive disinfection by-products and over chlorination.  Common salt and electricity generate a consistent and proper amount of pure chlorine solution in a safe, simple and cost effective way to disinfect pools.

We are committed to improving your recreational water quality, while using a green, recyclable treatment process. 

Benefits of Salt Chlorination

  •     Pool water has a silky, luxurious feel for the optimum swimming experience
  •     Consistent generation of chlorine disinfectant helps prevent chlorine spikes or algae episodes
  •     Minimized maintenance with many automated systems available
  •     Reduced chemical storage and handling
  •     Typical 3-5 year chlorinator lifetimes means fewer trips to the pool store since the disinfectant is made on-site


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Our Legacy

In 1982, the first specific DSA® electrode for pools application was manufactured, and has shown outstanding performance ever since making it the most validated anode in the field to date.

De Nora DSA®  electrode for swimming pool electrochlorination is a specialized technology found in all major swimming pool equipment manufacturers worldwide.  The versatility of the product allows for use in residential, spa and commercial applications.

Recommended Operating Conditions:

  • Salt (sodium chloride) range of 2-6 g/L
  • Water temperature: 15-40°C
  • Follow national standards for pool chemistry including disinfectant levels and saturation index parameters
  • Stabilizer levels of 30-50 ppm for outdoor facilities

De Nora DSA® Electrode Advantages

  • Validated and reliable electrochemical  technology for pool water disinfection
  • De Nora has the longest experience in electrode catalyst coating development
  • Significant resources committed to continuous product improvement
  • Self-cleaning product designed specifically for pool use


Technical Information

  • When the salt chlorinator is energized, the electrodes catalyze reactions with the sodium chloride and water molecules at the anode and cathode surfaces to generate the chlorine disinfectant
  • Chlorine is in the form of hypochlorous acid and sodium hypochlorite in the pool water, and the ratio of the two is pH dependent
  • When the chlorine disinfectant kills or inactivates pathogens and oxidizes organics/contaminants, the chlorine returns to the native state as salt (NaCl) in water as a recycling process 


Overall Chemistry Reaction:

NaCl + H2O + electricity --> NaOCl (disinfectant)

Primary Anode Reaction:     2 Cl- - 2 e-  ⇒ Cl2

Primary Cathode Reaction:  2H2O + 2 e- ⇒ H2 + 2 OH-