Dosing & DisinfectionDisinfection


Grundfos offers a variety of disinfection systems to ensure appropriate disinfection for your applications. For sustainable disinfection, Selcoperm system generates hypochlorite (8 g/l) on-site from salt, water and electricity only. Oxiperm system offers a wide range of possibilities for production and dosing of chlorine dioxide as well as Vaccuperm systems for chlorine gas dosing.


Vaccuperm Chlorine gas systems

Vaccuperm Chlorine gas systems

Vaccuperm Chlorine gas systems

Chlorine has been used to treat drinking water for more than 75 years because of its high safety standards. It is the most widely used disinfectant worldwide.

Vaccuperm gas dosing systems work in accordance with the tried-and-tested full-vacuum principle, which regulates the addition of gaseous chlorine reliably and precisely.


Selcoperm Chlorine Onsite generation of sodium hypochlorite

Selcoperm Onsite generation

Selcoperm sodium hypochlorite generation system

Electrolytic production and dosing of sodium hypochlorite solution

Grundfos Water Treatment Selcoperm electrolysers produce sodium hypochlorite electrolytically, directly from a solution of common salt using electricity.

In the electrolytic cell, caustic soda solution, chlorine and hydrogen are generated. The chlorine produced reacts immediately with the caustic soda solution, resulting in a sodium hypochlorite solution, which is the disinfectant. The solution generated has a pH value between 8 and 8.5, and a chlorine concentration of less than 8 g/l.


Oxiperm® Chlorine dioxide systems

Oxiperm® Chlorine dioxide systems

Oxiperm® Chlorine dioxide systems

Chlorine dioxide – effective even against biofilms

Chlorine dioxide is an extremely long-lasting and effective disinfectant:

  • Even relatively small quantities of chlorine dioxide display high disinfecting properties against all critical and chlorineresistant germs, almost regardless of the pH value.
  • Chlorine dioxide can be used to successfully reduce the formation of biofilms in water pipes. This removes the life source for harmful germs such as legionella, which has a significant impact on the durability of the disinfection.