The patented AOTech process, best characterized as a modified Fenton’s reaction, combines a proprietary activator along with an oxidant, typically hydrogen peroxide, to generate hydroxyl radicals. Hydroxyl radicals possess unpaired electrons in the outer orbital shell which are capable of breaking complex chemical bonds to satisfy their need for electrochemical balance. Hydroxyl radicals possess a relative oxidation potential nearly 60% greater than hydrogen peroxide and nearly 40% greater than ozone. The elevated oxidation potential provided by hydroxyl radicals delivers a quicker and more potent reaction, allowing for the destruction of complex organic compounds and reduced sulfur species. The AOTech process allows for these potent radicals to be generated at a fraction of the cost of other commercially available advanced oxidation processes, with minimal capital investment.
AOT Process Application
The AOTech process is most commonly comprised of two liquid components, a hydrogen peroxide solution (7-50%) and an activator, either “AOTech T” or “AOTech CW”. These components are injected separately into the receiving water or sludge using common chemical metering pumps.
The AOTech process provides the oxidative power to succeed, providing treatment and favorable economics in a wide range of difficult treatment conditions:
- Short Retention/Reaction Time: Depending upon target compound, treatment occurs in as little as 30 seconds.
- High Contaminant Loading: The flood of hydroxyl radicals produced by the reaction are able to attack contaminants
- Complex Odor Compounds: The elevated oxidation potential destroys recalcitrant organic odor compounds without the significant dosing increases required with traditional oxidants.
- High Oxidant Demand: High oxidant demand can consume traditional oxidants, interfering with the destruction of the target compounds. The flood of hydroxyl radicals produced by the AOTech process overcomes the oxidant demand to attack target compounds simultaneously without requiring excessive oxidant dosing.
- Operating Conditions: Wide temp range, wide pH range, functions in turbid/cloudy/dirty water, gas solubility rates not a factor, low utility input (O2/ozone generation).