Difference between revisions of "Water Treatment"

Revision as of 16:59, 29 November 2019

Water treatment is the process of removing harmful materials from waste water before being released into the environment.

Sewage is treated in several stages to make it safe to be released into the environment:

Filtration - A metal grill with large holes is used to collect large objects that have made their way into sewage.
Sedimentation - Sediment is allowed to fall to the bottom of a container and is removed.
Digestion - Micro-organisms are added to the sediment to break down many of the chemicals into smaller soluble ones.
Disinfection - Chlorine of Ultraviolet Light is used to kill the micro-organisms before then being released into rivers or the ocean.

Water Treatment is important for providing potable water for human consumption.

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+====Edexcel====
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+:[https://www.amazon.co.uk/gp/product/1782945725/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945725&linkCode=as2&tag=nrjc-21&linkId=694be7494de75af3349537d34e13f7f0 ''Water treatment, page 41, GCSE Chemistry; The Revision Guide, CGP, Edexcel '']
+:[https://www.amazon.co.uk/gp/product/1782948147/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948147&linkCode=as2&tag=nrjc-21&linkId=f63dcd8345f4e49c717b39a228a36c7c ''Water treatment, pages 112, 113, GCSE Chemistry, CGP, Edexcel '']