This is a stage in the treatment of sewage or other effluents which biologically treats the pollution frequently by the natural aerobic degradation of the pollutant
Process in which living microorganisms are mixed with or come in contact with waste, and use the biologically degradable organics in the waste as an energy source, converting the waste to methane, oxygen, or water Distinguished from physical/chemical methods, which do not employ living microorganisms
Method using bacteria and other simple organisms to treat waste material Toxic chemicals may be decomposed into less toxic or non-toxic chemicals, may be absorbed by organic matter produced by bacteria or may pass through unchanged