waste water purification agents

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• Water purification — This article is about large scale, municipal water purification. For portable/emergency water purification, see portable water purification. For industrial water purification, see deionized water. For distilled water, see distilled water. Water… …   Wikipedia

• Portable water purification — devices – also known as point of use (POU) water treatment systems and field water disinfection techniques – are self contained units that can be used by recreational enthusiasts, military personnel, survivalists, and others who must… …   Wikipedia

• Water softening — A water softener reduces the dissolved calcium, magnesium, and to some degree manganese and ferrous iron ion concentration in hard water.These hardness ions cause three major kinds of undesired effects. Most visibly, metal ions react with soaps… …   Wikipedia

• JERUSALEM — The entry is arranged according to the following outline: history name protohistory the bronze age david and first temple period second temple period the roman period byzantine jerusalem arab period crusader period mamluk period …   Encyclopedia of Judaism

• environmental works — ▪ civil engineering Introduction       infrastructure that provides cities and towns with water supply, waste disposal, and pollution control services. They include extensive networks of reservoirs, pipelines, treatment systems, pumping stations …   Universalium

• Timeline of Islamic science and engineering — This timeline of Islamic science and engineering covers the general development of science and technology in the Islamic world during the Islamic Golden Age, usually dated from the 7th to 16th centuries.From the 17th century onwards, the advances …   Wikipedia

• Reverse osmosis — Schematics of a reverse osmosis system (desalination) using a pressure exchanger. 1: Sea water inflow, 2: Fresh water …   Wikipedia

• Polyphenol — Plant derived polyphenol, tannic acid, formed by esterification of ten equivalents of the phenylpropanoid derived gallic acid to a monosaccharide (glucose) core from primary metabolism …   Wikipedia

• Thermal power station — Republika Power Plant, a thermal power station in Pernik, Bulgaria …   Wikipedia

• Ammonia — For other uses, see Ammonia (disambiguation). Ammonia …   Wikipedia

• Inventions in medieval Islam — A significant number of inventions were developed in the medieval Islamic world, a geopolitical region that has at various times extended from Al Andalus and Africa in the west to the Indian subcontinent and Malay Archipelago in the east.… …   Wikipedia