Description
| - Sewage is water-carried waste, in solution or suspension, that is intended to be removed from a community. Also known as wastewater, it is more than 99% water and is characterized by volume or rate of flow, physical condition, chemical constituents and the bacteriological organisms that it contains. In loose American English usage, the terms 'sewage' and 'sewerage' are sometimes interchanged. Both words are descended from Old French assewer, derived from the Latin exaquare, "to drain out (water)"
Classes of sewage include sanitary, commercial, industrial, agricultural and surface runoff. The spent water from residences and institutions, carrying body wastes, washing water, food preparation wastes, laundry wastes, and other waste products of normal living, are classed as domestic or sanitary sewage. Liquid-carried wastes from stores and service establishments serving the immediate community, termed commercial wastes, are included in the sanitary or domestic sewage category if their...
|