Enviolet will realize your UV-oxidation unit for COD / TOC- reduction and simultaneously increase the bioavailability of the treated wastewater. We do this by UV oxidation in combination with various oxidants under varying conditions in efficient processes of photo-oxidation.
By irradiating the oxidant with UV light, reactive intermediates are formed. These intermediates will react very quickly with the COD.
When using hydrogen peroxide as an oxidant, the irradiation with UV-light will lead to a homolytic formation of OH radicals (Photo-homolysis):
H2O2 -UV-> 2 OH*
OH radicals react very quickly with any organic compound through hydrogen abstraction. Mineral products such as water, sulphate, etc. result as final products (further information regarding chemistry of uv-oxidation).
UV-lamps and UV-reactors need to have a special design for this advanced oxidation process (AOP), otherwise the photo-reaction will quickly go into inhibition, as it turn out to end in a photo-polymerization. The enviolet UV-reactors are specially designed for highest efficiency of UV-oxidation and phtoto-oxidation in strongly absorbing aqueous solutions, and many wastewaters we treat look in the beginning of the UV-oxidation like Coffee or Latte Macchiato.
The photo-reaction proceeds until the UV oxidation is complete and then the next process steps can follow to conclude the whole advanced oxidation process (AOP).