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The company secured the first patent for domestic water filter use in the 1970s. [7] In 1988, [8] The Clorox Company, based in Oakland, California, entered in a licensing-and-distribution agreement with the German company for North and South America. In 1995, it added the Canadian rights by acquiring Canada's Brita International Holdings.
The Metropolitan Commission of Sewers was formed at the same time, water filtration was adopted throughout the country, and new water intakes on the Thames were established above Teddington Lock. Automatic pressure filters, where the water is forced under pressure through the filtration system, were innovated in 1899 in England. [9]
Fresh water can have widely ranging pH values depending on the geology of the drainage basin or aquifer and the influence of contaminant inputs . If the water is acidic (lower than 7), lime, soda ash, or sodium hydroxide can be added to raise the pH during water purification processes. Lime addition increases the calcium ion concentration, thus ...
Filtration as a method of water purification was established in the 18th century, and the first municipal water treatment plant was built in Scotland in 1832. However, the aesthetic value of water was important at the time, and effective water quality standards did not exist until the late 19th century. [18]
The Nile river is the only water source for most of Egypt, including its capital Cairo shown here. Egypt's main source of freshwater is the Nile River. The river supplies 55 billion m 3 of freshwater every year, which represents 97% of all renewable water resources in Egypt. [5] Overall, the Nile River constitutes about 90% Egypt's water supply.
Coway Co., Ltd. (Korean: 코웨이 주식회사)is an international manufacturer of household appliances, water purifiers, air purifiers, bidets, water softeners, and mattresses from South Korea. [ 2 ] [ 3 ] [ 4 ] Founded and headquartered in Seoul, Coway is the largest water purifier company in the country and owns subsidiaries in Malaysia ...