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Surface Water
The water in STREAMS and LAKES, seemingly more accessible than underground water, is often the first source that man taps. In fact, about 80% of water used comes from surface sources, and only 20% from underground supplies
As our population grows and our industries expand, pollution leads are bound to increase, and so will the variety of pollutants. Some pollutant such as dissolved solids may affect quality of water and make it unfit to drink. |
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Ground Water
Ground water resources play an important role in today’s water – use programs, and their growth potential is even greater.
Ground water storages are encouraging many cities to turn to ground water supplies. What makes these vast underground reservoirs so attractive is not simply the water that is there, but they cost less to develop than surface stores.
As a solvent, water picks up minerals and actually dissolves as it seeps into the earth. Because ground water is in contact with rocks for long periods, it usually contains more dissolved minerals than surface water.
If dissolved solids exceed 1000 ppm, the water is classed as SALINE. BRACKISH WATERS hold 1000 to 10,000 ppm.
REVERSE OSMOSIS, the blocking of salt, minerals and waste products by a MEMBRANE is a very successful technique worldwide used now for treating BRACKISH WATER. |
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Ocean Waters
Man has dreamed for centuries of turning the oceans into water. For many years now, he has done just that in special cases, such as on board ship. Nowadays, advanced technology has made it possible to DESALINATE OCEAN WATERS, with very reasonable costs.
REVERSE OSMOSIS, based on the diffusion process that occurs in LIVING CELLS, is very helpful now in desalting sea water, with very modern technique in order to get sweet water with even very reasonable costs. |
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