SPAN Technical Specification (TS): Disinfection of water – Electro-chlorination systems
Commenting Period
16/11/2020 – 16/12/2020
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Electro-chlorination (EC) is the process of electrolysis of brine solution (saturated salt solution/ sodium chloride) and softened water to produce an active chlorine solution, namely sodium hypochlorite (NaOCl). NaOCl is an effective disinfectant and can be used as a substitute for chlorine gas or Calcium Hypochlorite (solid chlorine granules). The production of NaOCl is on-site generation basis. Generation of NaOCl requires salt, water and electricity (direct current type).

This technical specification was developed as a guide to qualify equipment for Electro-chlorination systems. The technical specification provides the requirements on the material used for the construction of the equipment, the design criteria for electro-chlorination equipment, the performance, acceptance criteria and test requirement for type of equipment, the installation, maintenance, service life, the safety consideration during installation and operation of equipment, and the requirements on marking of equipment that need to be followed by equipment manufacturers/supplier.