Sewage is a 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 and toxic constituents, and the bacteriological organisms that it contains. It consists mostly of greywater (from sinks, tubs, showers, dish and clothes washers, and toilets) and the human waste that the toilets flush away; soaps and detergents; and toilet paper (less so in regions where bidets are widely used instead of paper). Whether it also contains surface runoff depends on the design of its route back to the environment.
fonte: wiki
Sem comentários:
Enviar um comentário