Secondary Disinfection
Contact Information
Global Nalco LocationsLocal Sales Offices
Energy Services Contacts
Nalco EAME Headquarters
Nalco Europe Sàrl
A-One Business Park
Z.A. La Pièce 1
Route de l’Etraz
1180 Rolle
Switzerland
Tel: +41 (0)21 614 6400
Envirox® Chlorine Dioxide Systems
Advances in chlorine dioxide (ClO2) systems technology have driven rapid expansion in the number of applications using ClO2 successfully.
Nalco water hygiene services has been successfully selling Envirox ClO2 systems for several years, with more than 500 installations throughout Europe and the United States in hospitals, bottled water plants, breweries and manufacturing plants. 
Envirox incorpates a patented electrochemical generation process for ClO2 that uses a single safe precursor (sodium chlorite) to generate the biocide. Unlike many competitive products Nalco Envirox systems use no acid on site. Not using acid gives Envirox major safety benefits in chemical handling and storage plus the reduction in the potential for local plant corrosion caused by typical acid storage systems. Using only a single precursor chemical avoids the possibility of chemical mixing and subsequent explosion risk associated with other forms of two and three precursor ClO2 generators.
Other Envirox ClO2 applications include:
1. Thermal storage loops, or any closed loop requiring biocontrol.
Our consultants recommend ClO2 as the best available technology for biocontrol in large closed loops.
2. Food plant opportunities, including:
- Flume water
- Poultry carcass chiller tanks
- CIP applications
- Breweries
- Pasteurisers
- Bottle fillers
- Conveyor rinse
- Mash coolers (ethanol plants)
3. Manufacturing opportunities
- Ammonia (NH3) destruction in process or cooling water
- Lubricating oils reservoirs where microbioial control is a problem
- Any place where conventional biocides are not working
For more information, contact us.

