MBR and Sludge glossary (O)
O&M
Operation & maintenance
OC
Organic carbon
OD
Outer diameter
ODE
Ordinary differential equation
OEM
Original Equipment Manufacturer
ON
Organic nitrogen
OPEX
Operating expenditure
Organic loading rate OLR
Amount of organic matter fed into the reactor per unit volume per unit time
Organic polyelectrolyte
Type of flocculant
Organic rankine cycle
Process for converting heat into mechanical energy
OTE
Oxygen transfer efficiency
OTR
Oxygen transfer rate
OUE
Oxygen utilisation efficiency
Oxidative thermochemical methods
Thermochemical methods which require oxygen, normally comprising incineration, wet air oxidation (WAO) and supercritical water oxidation (SCWO)
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This page was last updated on 25 March 2025
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