Effect of domestic sewage pollution
Domestic sewage pollution is the pollution caused to the earth by domestic use. It contain of sewage originating primarily from kitchen,bathroom, and laundry sources and also waste from food preparation, dishwashing, garbage, toilets, baths, showers, and sinks. Sewage is the term used for wastewater that often contains faeces, urine and laundry waste. Sewage disposal is a major problem in developing countries as many people in these areas don’t have access to sanitary conditions and clean water. Untreated sewage water in areas without access to sanitary conditions can contaminate the water, which can result with diseases. Sewage is the part of wastewater that is contaminated with faeces or urine, but is often used to mean any wastewater. When this is done sewage refers to wastewater from sources including domestic, municipal, or industrial liquid waste products disposed of, usually via a pipe or sewer system. Untreated sewage may contain water; nutrients (nitrogen and phosphorus); solids (including organic matter); pathogens (including bacteria, viruses and protozoa); helminthes (intestinal worms and worm-like parasites) ; oils and greases; runoff from streets, parking lots and roofs; heavy metals (including mercury, cadmium, lead, chromium, copper) and many toxic chemicals including PCBs, PAHs, dioxins, furans, pesticides, phenols and chlorinated organic. Furthermore, sewage is liquid waste produced by households and industries. Sewage can be subdivided into black water and grey water. Black water sewage is the stuff that comes out of toilets. Its contents may include faeces, urine, paper, condoms, tampons and water and any other material that people find convenient to flush down toilets. Grey water, on the other hand, consists of the out flow from wash basins, baths, kitchen, washing machines and sinks. The contents of gray water may include food remains, oil, detergents, dirt and water. All of the disposal sewage...
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