Waste Water Treatment
Published Online: 15 APR 2005
Copyright © 2005 by John Wiley & Sons, Inc.
How to Cite
Kazmi, A. A. 2005. Sewage. Water Encyclopedia. 1:828–830.
- Published Online: 15 APR 2005
When human feces and urine are diluted with flushing water or other gray water (such as from washing, bathing, and cleansing activities), it becomes sewage, domestic wastewater, or sanitary wastewater. In other words, from the standpoint of sources of generation, sewage or domestic wastewater may be defined as a combination of the liquid- or water-carried wastes from residences, institutions, and commercial and industrial establishments, together with such groundwater, surface water, and stormwater as may be present. Sewage can be classified into two types:
Domestic sewage or domestic wastewater: human excrement, waterborne human excretion, or water-carried wastes from liquid or nonliquid culinary purposes, washing, cleansing, laundering, food processing, or ice production;
Municipal sewage or municipal wastewater: municipal liquid waste originating primarily from residences, but may include contributions from
holding tanks in recreational vehicles, boats, and houseboats;
commercial, institutional, and industrial sources; and
inflow and infiltration.
- biodegradable organics;
- domestic wastewater;
- municipal wastewater;
- on-site system;
- sewage treatment