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19 Sep 2016
Plantas de tratamiento
Water (chemical like) can be a transparent fluid that you can get in lakes, oceans and rain, and is the major constituent of organisms. Being a chemical compound, a water molecule contains one oxygen and a couple hydrogen atoms. Water is often a liquid at standard pressure, nevertheless it often exists on this planet featuring its solid state, ice; and gaseous state, steam. What's more, it exists as snow, fog, dew and cloud. Water covers 71% with the Earth's surface. On the planet, 96.5% in the planet's water is found in seas and oceans, 1.7% in groundwater, 1.7% in glaciers and the ice caps of Antarctica and Greenland, and 0.001% in the air.

compuerta radial hidraulica
Urban wastewater is really a major threat to...