Ozone feed calculations

The number of variables needed to determine precisely the ozone dosage prevents developing a single table. However, by allowing a small error (for example, within 1 to 2 percent) in the results, several 

Calculators c4-8 through c4-10 are for an air-feed ozone system. For a more rigorous calculation (or for calculations for pressure swing adsorption, vacuum swing adsorption, and vacuum-pressure swing adsorption systems), refer to Ozone in Drinking Water Treatment (Rakness 2005). 

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Specific advice was provided regarding ozone feed calculations by Kerwin Rakness (Process Applications Incorporated). Suggestions and comments on chlorine dioxide feed were provided by Kevin Gertig and Grant Jones (both with the City of Fort Collins, Colo.). 

Ozone Dosage Calculators (Oxygen Feed System)... 

Table P-1 Ozone dosage calculation spreadsheet example ox en feed...

Table D-2 Ozone dosage calculation spreadsheet example air feed 140...

What is needed now is some means for calculating e. To do this, it is useful to consider some component, H, which is formed only by Reaction I, which does not appear in the feed, and which has a stoichiometric coefficient of v/// = 1 for Reaction I and stoichiometric coefficients of zero for all other reactions. It is always possible to write the chemical equation for Reaction I so that a real product has a stoichiometric coefficient of +1. For example, the decomposition of ozone, 2O3 3O2, can be rewritten as 2/3O3 —> O2. However, you may prefer to maintain integer coefficients. Also, it is necessary that H not occur in the feed, that there is a unique H for each reaction, and that H participates only in the reaction that forms it. Think of H as a kind of chemical neutrino formed by the particular reaction. Since H participates only in Reaction I and does not occur in the feed, Equation (2.40) gives... 

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