How to remove nitrose gasses from ozone gas mixture? I produce ozone gas with an ozone generator based on corona discharge principle.
These kind of ozone generators have the disadvantage that if $\ce{N2}$ is present, a bit of $\ce{NO}$ and $\ce{NO2}$ will be produced too.
To produce oxygen I use a oxygen concentrator, with an output of about $90\%$ $\ce{O2}$ and about $10\%$ $\ce{N2}$.
For that reason I have a little quantity of $\ce{N2}$ entering the ozone generator, which subsequently lead to unwanted side reactions like $$\ce{N2 -&gt; NO -&gt; NO2}.$$

The $\ce{NO2}$, even in that small quantity as it is, does influence the following processes in an negative way.

The easiest way to circumnavigate this issue would be to take pure oxygen – however for cost reasons I cant use LOX, so I have to stay with the concentrator.
I am searching for an reagent or an catalyst, which is not effected by the ozone but does absorb or disintegrate the $\ce{NO}$, and especially the $\ce{NO2}$.

To stripe $\ce{NO2}$ from a normal gas is not so difficult, but the ozone does make trouble.
I thought about dry $\ce{NaOH}$, soda lime, or dry $\ce{KOH}$, but I have the feeling that these chemicals will react with $\ce{O3}$.

Any suggestions?
There is no need to use caustic since $\ce{NO2}$ reacts with water itself. As per [1] it is even better absorbed in water than in $\ce{NaOH}$. 

Ozone is soluble in water depending on the concentration of $\ce{O3}$ in the gas phase. It is much more soluble than oxygen so you will loose some, but it will have much lower concentration of $\ce{NO2}$. Of course, the washed ozone will be moist. If you need it dry, you can use a column of molecular sieves or some other desiccant. 

[1] Absorption of Nitrogen Dioxide by Aqueous Solutions,
F. S. Chambers Jr., T. K. Sherwood,
Ind. Eng. Chem., 1937, 29 (12), pp 1415–1422