Advanced oxidation processes (AOPs), uniting together ozone and high output ultraviolet technologies, in conjunction with hydrogen peroxide and catalyst, for the reduction of residual organic compounds and TOC, may offer a powerful water treatment solution.

The AOP process is successfully used to decompose many hazardous chemical compounds to acceptable levels, without producing additional hazardous by-products or sludge which require further handling.

The development of AOPs is an attempt to produce the non-selective and rapid hydroxyl radical OH° to oxidize pollutants. The most widely applied AOP has been the H2O2/UV, O3/UV, H2O2/O3 and H2O2/O3/UV processes.

Oxidizing agents, Hydrogen peroxide and Ozone are added to the contaminated water and is activated by the UV light to form oxidizing species called hydroxyl radicals, via:
O3/H2O2 + UV————–> 3(•OH)
The hydroxyl radical reacts with the dissolved contaminants, initiating a rapid cascade of oxidation reactions that ultimately fully oxidize (mineralizes) the contaminants.

Applications?

Advanced Oxidation Processes have a wide range of applications, mainly for Oxidation of refractory compounds, TOC & COD reduction in:

• Gas effluent treatment
• water reclaim / reuse / recycling
• drinking water supplies
• industrial & municipal wastewater
• process water, ultra-pure water
• electronic & pharmaceutical industries
• mineral water and beverage industries
• public and private swimming pools
• medicinal baths, sanatoriums, hospitals
• cooling water systems
• bottling & rinsing plants
• fish hatcheries and farm