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  2. Chemical drain cleaners - Wikipedia

    en.wikipedia.org/wiki/Chemical_drain_cleaners

    Chemical drain cleaners are available through hardware stores, although some may be intended for use by licensed plumbers. They may contain either strong acids (in liquid forms) or strong alkalis (in either solid or liquid forms). These cleaners contain chemicals that dissolve at least some of the material causing the clog.

  3. Drain cleaner - Wikipedia

    en.wikipedia.org/wiki/Drain_cleaner

    High pressure sewer jetters with root-cutting nozzles can clear a hole through the center of a root-infested sewer line and with its rear-facing jet streams cut the roots and clean the pipe walls, flushing the root debris through the sewer line. The sewer jetter has been labeled as a technological advancement of the plumber's snake (also known ...

  4. Roto-Rooter - Wikipedia

    en.wikipedia.org/wiki/Roto-Rooter

    Sam Blanc with an early Roto-Rooter sewer cleaning machine. In the late 1920s, Samuel Oscar Blanc (1883–1964) was cleaning a blocked sewer at his son's (Milton L. Blanc) Des Moines, Iowa, apartment to seek a better solution than digging up the sewer line to remove tree roots that had invaded the underground sewer pipe.

  5. Milorganite - Wikipedia

    en.wikipedia.org/wiki/Milorganite

    Milorganite's roots began in 1911, when local socialist politicians were elected on a platform calling for construction of a wastewater treatment plant to protect against water borne pathogens. [ 3 ] [ 9 ] As raising taxes for public health was relatively controversial in the early 1900s, [ citation needed ] producing an organic fertilizer as a ...

  6. Wastewater treatment - Wikipedia

    en.wikipedia.org/wiki/Wastewater_treatment

    [10]: 180 Some industries install a pre-treatment system to remove some pollutants (e.g., toxic compounds), and then discharge the partially treated wastewater to the municipal sewer system. [11]: 60 Most industries produce some wastewater. Recent trends have been to minimize such production or to recycle treated wastewater within the ...

  7. Sewage sludge - Wikipedia

    en.wikipedia.org/wiki/Sewage_sludge

    Sewage sludge treatment is the process of removing contaminants from wastewater.Sewage sludge is produced from the treatment of wastewater in sewage treatment plants and consists of two basic forms — raw primary sludge and secondary sludge, also known as activated sludge in the case of the activated sludge process.

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