Electrical Discharge Ozone Generators EDOGs

An overview of the main operating parameters and characteristic parameter ranges for lab- and full-scale generators is given in Table 2-3. 

Ozone source - air or 02 high-purity feed-water, conductivity 20 pS cm 1 

Source preparation system gas-compression, cooling, filtering, drying ion-exchange, ultra- or nanofiltration, reverse osmosis, distillation 

The type of feed gas used, air or oxygen, determines the achievable ozone gas concentration and the gas preparation requirements. The higher the oxygen content, the higher the ozone concentration possible. Ambient air contains 02 in about 21 vol % (at STP) and is thus a cheap and ubiquitous resource for ozone production. Its main use and advantage is in applications where large mass flows are required at comparatively low ozone gas concentrations, e. g. in drinking water ozonation systems. 

The major disadvantages of using ambient air as feed gas for ozone generation are  

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Figure 2-2 Working principle of the tubular Electrical Discharge Ozone Generator (EDOG).

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