Bello Zon® CDLb

Chlorine dioxide production and metering system

The chlorine dioxide system Bello Zon® CDLb uses the chlorite/acid process. A chlorine-free chlorine dioxide is generated from a sodium chlorite solution using hydrochloric acid in a batch process. The innovative reactor design and stepwise process make the production of chlorine dioxide exceptionally safe and reliable.
The system can produce up to 120 g chlorine dioxide per hour, depending on the type. These are then buffered in an integrated or separate storage module at a concentration of 1,000 or 2,000 mg/l. Due to the separate storage module-buffered 60 g chlorine dioxide, plants cannot be designed according to their peak consumption, but can rather be designed according to their average consumption. This drastically reduces investment costs in comparison with conventional systems.
The ProMinent® product range offers a wide range of metering pumps and control versions to choose from for operating several points of injection using chlorine dioxide from a storage module.
This innovative process produces a chlorine dioxide solution of exceptional long-term stability and achieves a high efficiency of over 90 % in the chlorine dioxide reaction. The closed gas transport means that no chlorine dioxide can escape from the system. This guarantees economical, environmentally friendly operation with minimal use of chemicals.
The modular construction of the system enables it to meet a range of different applications.
Possible applications for the chlorine dioxide system Bello Zon®
CDLb is mainly used for preventing Legionnaire’s Disease as well as a disinfectant in the food and beverage industry. Other applications are in cooling and potable water treatment, and in swimming pool filter disinfection.


  • Minimal investment costs
  • Several points of injection can be operated
  • Economical operation due to minimal use of chemicals
  • High operational safety due to intrinsically
  • Safe process control
  • No chlorine dioxide loss due to closed gas supply
  • High degree of stability in the chlorine dioxide solution


  • Prevents, Legionnaires' Disease
    • Hotels, hospitals, etc.
  • Disinfection for the beverage and food industry
    • Bottle rinser, CIP, bottle washing machine
    • Fruit/vegetable rinser
  • Horticulture
    • Irrigation water and sprinkler irrigation water
  • Cooling water and potable water treatment
  • Swimming pools


  CDLb 6 CDLb 12 CDLb 22 CDLb 55 CDLb 120
Preparation capacity g/h 6 12 22 55 120
Solution concentration mg/l 1.000 2.000 2.000 2.000 2.000
Integrated metering pump CIO2 Beta® Beta® Beta® Delta® -
  8 8 13 30  
Back pressure 7 7 7 7  
Dimensions mm (HxWxD) 1236 x 878 x 306 1236 x 878 x 306 1236 x 878 x 306 1550 x 800 x 345 1300 x 880 x 425

Power supply

  • 100-230 V, 50/60 Hz


  • 2 free configurable digital inputs for the pause functions, high metering, shock dosing, or manual metering, including collective malfunction
  • 4 digital inputs for monitoring (Warning/ empty message) from teh chemical supply
  • 1 digital input for contact water meter 0.25-20 Hz
  • 1 frequency input for water meter 10-10,000 Hz


  • 1 operating signal relay
  • 1 alarm signal relay
  • 1 warning signal relay
  • 1 voltage output +5 V as supply voltage for a water meter with Hall sensor

Operating fluids

  • Sodium chlorite 7.5%, purity according to EN 938
  • Hydrochloric acid 9%, purity according to EN 939
  • Potable water


Cut Sheet: Bello Zon CDLb | Part #: 7750261 | Updated: 5/7/13