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  2. Fairground Park riot - Wikipedia

    en.wikipedia.org/wiki/Fairground_Park_riot

    Swimmers at the Fairground Park swimming pool, 1920s. The Fairground Pool, in St. Louis, Missouri, was one of the largest pools in the American Midwest, measuring 440 feet. The pool was able to hold from 10,000 to 12,000 swimmers at a time. During this time period much of the country was suffering from segregation.

  3. Pool Corporation - Wikipedia

    en.wikipedia.org/wiki/Pool_Corporation

    Pool Corporation was founded in 1980 as South Central Pool Supply by Frank J. St. Romain. [2] In 1993, the company was purchased by Code Hennessey's & Simmons. In 1995, the company was renamed SCP Pool Corporation and became a public company via an initial public offering. The company was renamed Pool Corporation on May 16, 2006. [3]

  4. Pressure grouting - Wikipedia

    en.wikipedia.org/wiki/Pressure_grouting

    Pressure grouting or jet grouting [1] involves injecting a grout material into otherwise inaccessible but interconnected pore or void space of which neither the configuration or volume are known, and is often referred to simply as grouting.

  5. Swimming pool sanitation - Wikipedia

    en.wikipedia.org/wiki/Swimming_pool_sanitation

    Other filter media that have been introduced to the residential swimming pool market since 1970 include sand particles and paper type cartridge filters of 50 to 150 square feet (4.6 to 13.9 m 2) filter area arranged in a tightly packed 12" diameter x 24" long (300 mm x 600 mm) accordion-like circular cartridge. These units can be 'daisy-chained ...

  6. Water softening - Wikipedia

    en.wikipedia.org/wiki/Water_softening

    Conditioning of hard water from Tempe, Arizona with different types of treatment methods [19] [20] Treatment Normalized scale formation No treatment 1.00 Electromagnetic Water Treatment 0.57 Electrically Induced Precipitation 0.50 Capacitive Deionization 0.17 Ion exchange 0.06 Template Assisted Crystallization 0.04

  7. Salt water chlorination - Wikipedia

    en.wikipedia.org/wiki/Salt_water_chlorination

    Salt water chlorination is a process that uses dissolved salt (1000–4000 ppm or 1–4 g/L) for the chlorination of swimming pools and hot tubs.The chlorine generator (also known as salt cell, salt generator, salt chlorinator, or SWG) uses electrolysis in the presence of dissolved salt to produce chlorine gas or its dissolved forms, hypochlorous acid and sodium hypochlorite, which are already ...

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