Waste Treatment
Anaerobic
Anaerobic is a technical word that literally means without air (where "air" is generally used to mean oxygen), as opposed to aerobic.
In wastewater treatment the absence of oxygen is indicated as anoxic, and anaerobic is used to indicate the absence of a common electron acceptor such as nitrate, sulphate, or oxygen.
Biomass Immobilization
Biomass cell immobilization is defined as the confinement of whole cells in an insoluble phase, which permits the free exchange of solutes from and towards the biomass, while at the same time isolating the cells from their surrounding medium.
COD
Chemical oxygen demand (COD) test is commonly used to indirectly measure the amount of organic compounds in water. It is expressed in milligrams per liter (mg/L), which indicates the mass of oxygen consumed per liter of solution.
Effluent
Effluent is an outflowing of water from a natural body of water or from a man-made structure.
Effluent in the man-made sense is generally considered to be water pollution, such as the outflow from a sewage treatment facility or the wastewater discharge from industrial facilities. An effluent sump pump, for instance, pumps waste from toilets installed below a main sewage line.
Organic Loading Rate
Organic Loading Rate expressed in COD g/L/day is a measure of the amount and concentration of organic matter processed by a bio-reactor.