Chlorine dioxide and bromine chemistry.

  More About Chlorine, Chlorine Dioxide, and Disinfection Technologies

CHLORINE DIOXIDE GENERATING SYSTEM

International Dioxide, Inc.'s (IDI) patented OXYCHLOR® II chlorine dioxide generating system is based on the reaction of either sodium chlorite and chlorine gas in solution, or sodium chlorite, sodium hypochlorite and hydrochloric acid solution. The latter process is available from IDI when chlorine gas is not desired.

Patented System Process
The OXYCHLOR® II generator described here is a chlorite/chlorine vacuum-based system. The chemicals are proportioned through feed rate meter under vacuum. The vacuum is created by water passing through an eductor. As the chemicals are drawn into the educator the are instantaneously introduced into the water stream. The chlorine dioxide solution next passes through a reaction column where the reaction is completed, giving a yield of 95% or higher. Because there is a more complete reaction, the high purity of the resulting chlorine dioxide minimizes formation of harmful Trihalomethane (THMs) and other chlorinated organics.

In-Line pH Meter Monitors Performance
Optimum pH range for this reaction depends on a number of factors including process water alkalinity, eductor water flow, and feedback concentration. Field tests at the time of start-up will determine which pH level is correct to achieve 95% yield while limiting excess chlorine. A pH meter is installed as an integral part of the patented generator downstream of the reaction column. Should the established pH limits be exceeded, the generator can be shut down automatically. This effectively prevents unreacted chlorite of excess chlorine gas from passing into a process or water treatment system.

It is recommended that all OXYCHLOR® generators use ADOX sodium chlorite solutions as the precursor of choice to generate chlorine dioxide. Other sodium chlorite solutions may have different impurities that could effect optimum performance. International Dioxide, Inc. is a leading supplier of sodium chlorite solutions, packaged in drums, totes or bulk, and we offer a variety of delivery points.

We also offer a full line of chlorine dioxide generators including single precursor electrochemical chlorine dioxide generation, automatic flow pacing and multi-point generation systems. Experienced field engineers are also available to assist with site-specific requirements, including on-site start-up, training and technical support.