BOD: Biological Oxygen Demand

COD: Chemical Oxygen Demand

CWO - Catalytic Wet Oxidation.  Wet air oxidation or wet oxidation with a homogeneous or heterogeneous catalyst to enhance performance.

Hydrolysis: A process similar to wet oxidation for the treatment of wastewaters when oxygen is not a necessary reactant.

Hydrothermal Oxidation Process: Processes which involve oxidation/reduction in an aqueous matrix at elevated temperatures. Examples of hydrothermal oxidation processes include:

• Wet Oxidation (WO): The oxidation of oxidizable substances in water using the oxygen in air, pure or enriched oxygen, hydrogen peroxide, nitric acid or some other oxidizing agent as the source of the oxidant. The process is conducted at subcritical temperatures (<374°C).
• Wet Air Oxidation (WAO): Wet oxidation using air as the oxygen source.
• Supercritical Water Oxidation (SCWO): Wet oxidation occurring in supercritical water at temperatures greater than 374°C (705°F) and pressures greater than 221 bar (3204 psig).

Hydrothermal Treatment Process: Processes which involve the use of hydrolysis or that use oxidation/reduction in an aqueous matrix at elevated temperatures.

SCWO: Supercritical Water Oxidation

TKN: Total Kjeldahl Nitrogen

TOC: Total Organic Carbon

TSS: Total Suspended Solids

WAO: Wet Air Oxidation

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