Aquabiotec Engineering SARL

Aquabiotec Engineering SARL

41-43, rue de Cronstadt, F-75015 Paris

Tertiary Treatment with Advanced Oxidation Process (AOP)

Tertiary Treatment with Advanced Oxidation Process (AOP)

The combined process uses the chemical / biochemical oxidation (chemical oxidation with ozone; biochemical oxidation with biofiltration) in an optimized ozone application representing an efficiency standard far above the European BAT level. The process is attributed to the group of advanced oxidation processes (AOP).

The combination makes use of the effect of partial oxidation in which with reduced consumption of ozone (far reduced operation costs) of non-biodegradable (persistent) COD becomes biodegradable. For advanced treatment of the resulting biodegradable organic compounds, biofiltration is applied (. High elimination rates of persistent COD and other compounds are achieved simultaneously, such as, AOX, colour, chelating agents (i.e. DTPA, EDTA), optical brighteners, surface active substances, micro pollutants, microorganism (disinfection). COD elimination generally is about 50 %, m with a two stage system 85 % COD elimination may be reached. AOP with pressurized ozone reactors with shorter hydraulic retention time (HRT approx. 5 min at around 3 bar) and depressurized ozone reactors (HRT approx. 25 min, atmospheric pressure) are in large-scale applications in papermills

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