From the exhaust emissions of ozone contact tank still contains a certain amount of ozone, if directly into the atmosphere, it will cause air pollution. Environmental ozone exhaust emission regulations for 0.3mg / L.

Exhaust ozone treatment methods commonly used chemical method and electric heating decomposition.

Chemical method and activated carbon catalyst is usually Absorption Spectrometry. France is urging foreign agent manganese dioxide matrix and filler as a catalyst, it can play a catalytic decomposition of ozone. The method less investment in equipment, low energy consumption, its downside is that the case must be dehumidified air before entering the processor; poor safety and stability; catalyst should be changed regularly and so on. Activated carbon adsorption method is the use of carbon support surface can ethylenic decomposition of ozone absorption, and a portion of the direct reaction of ozone and activated carbon to form CO2 and CO. The disadvantage of this method is that ozone oxidation in the activated carbon adsorption process, to generate heat, and open into an unstable ozonation product, absorbing device prone to fire and explosion, a larger explosion occurred when the presence of nitrogen oxides risk. In actual production, this approach should be carefully selected.

The disadvantage of this method is that ozone oxidation in the activated carbon adsorption process, to generate heat, and open into an unstable ozonation product, absorbing device prone to fire and explosion, a larger explosion occurred when the presence of nitrogen oxides risk. In actual production, this approach should be carefully selected. The method of fast response, good effect, easy to automatic operation, safe and reliable. The disadvantage is an increase of some equipment investment and energy consumption. Electric heating decomposition method is the focus of future water applications.