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Culligan International is a United States based global water treatment company with a network of dealers and direct operations in 90 countries with 1,000 dealers; over 600 in North America alone, and more than 14,000 employees.
Reverse osmosis (RO) is a water purification process that uses a semi-permeable membrane to separate water molecules from other substances. RO applies pressure to overcome osmotic pressure that favors even distributions.
Quench USA Inc. is a water technology company that rents and services filtered water coolers. According to the site, over half of the Fortune 500 are customers. Zenith International lists Quench as a leading distributor in the point-of-use (POU) market along with Nestle Waters. [1]
Reverse osmosis is a common process to purify or desalinate contaminated water by forcing water through a membrane. Water produced by reverse osmosis may be used for a variety of purposes, including desalination , wastewater treatment , concentration of contaminants, and the reclamation of dissolved minerals. [ 1 ]
TFC membranes for water treatment are commonly classified as nanofiltration (NF) and reverse osmosis (RO) membranes. Both types are typically made out of a thin polyamide layer (<200 nm) deposited on top of a polyethersulfone or polysulfone porous layer (about 50 microns) on top of a non-woven fabric support sheet. The three layer configuration ...
During the 1960s ELGA became a global supplier of water purification systems. [4] ELGA Group PLC was incorporated in 1984 and became part of Protean PLC in 1992. Protean PLC was acquired by Culligan Water Technologies (Northbrook Illinois) in 1997. Culligan was acquired by U.S. Filter (Palm Springs, California) in 1998. ELGA became part of USF ...
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