{"page":"\u003clink rel=\"stylesheet\" href=\"https://lessonplanet.com/assets/packs/css/resources-572d6a42.css\" /\u003e\n\u003clink rel=\"stylesheet\" href=\"https://lessonplanet.com/assets/packs/css/lp_boclips_stylesheets-f4d0de30.css\" media=\"all\" /\u003e\n\u003cdiv data-title='How Does Water Treatment Work | Environmental Chemistry | Chemistry | FuseSchool' data-url='/boclips/videos/625f783de70de0414b36af94' data-video-url='/boclips/videos/625f783de70de0414b36af94' id='bo_player_modal'\u003e\n\u003cdiv class='boclips-resource-page modal-dialog panel-container'\u003e\n\u003cdiv class='react-notifications-root'\u003e\u003c/div\u003e\n\u003cdiv class='rp-header'\u003e\n\u003cdiv class='rp-type'\u003e\n\u003ci aria-hidden='true' class='fai fa-regular fa-circle-play'\u003e\u003c/i\u003e\nVideo\n\u003c/div\u003e\n\u003ch1 class='rp-title' id='video-title'\u003e\nHow Does Water Treatment Work | Environmental Chemistry | Chemistry | FuseSchool\n\u003c/h1\u003e\n\u003cdiv class='rp-actions'\u003e\n\u003cdiv class='mr-1'\u003e\n\u003ca class=\"btn btn-success\" data-posthog-event=\"Signup: LP Signup Activity\" data-posthog-location=\"body_link_boclips\" data-remote=\"true\" href=\"/subscription/new\"\u003e\u003cspan\u003e\u003cspan\u003eGet Free Access\u003c/span\u003e\u003cspan class=\"\"\u003e for 10 Days\u003c/span\u003e\u003cspan\u003e!\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e\n\u003c/div\u003e\n\u003c/div\u003e\n\u003c/div\u003e\n\u003cdiv class='rp-body'\u003e\n\u003cdiv class='rp-info'\u003e\n\u003cdiv aria-label='Hide resource details' class='rp-hide-info' role='button' tabindex='0'\u003e\u0026times;\u003c/div\u003e\n\u003ci aria-label='Expand resource details' class='rp-expand-info fai fa-solid fa-up-right-and-down-left-from-center' role='button' tabindex='0'\u003e\u003c/i\u003e\n\u003ci aria-label='Compress resource details' class='rp-compress-info fai fa-solid fa-down-left-and-up-right-to-center' role='button' tabindex='0'\u003e\u003c/i\u003e\n\u003cdiv class='rp-rating'\u003e\n\u003cspan class='resource-pool'\u003e\n\u003cspan class='pool-label'\u003ePublisher:\u003c/span\u003e\n\u003cspan class='pool-name'\u003e\n\u003cspan class='text'\u003e\u003ca data-publisher-id=\"30356011\" href=\"/search?publisher_ids%5B%5D=30356011\"\u003eCurated Video\u003c/a\u003e\u003c/span\u003e\n\u003c/span\u003e\n\u003c/span\u003e\n\u003c/div\u003e\n\u003cdiv class='rp-description'\u003e\n\u003cspan class='short-description'\u003eLearn the basics about water treatment, as a part of environmental chemistry. Human beings have added to the natural water cycle by taking water from rivers for use in our towns and cities. We are taking a huge amount of water from...\u003c/span\u003e\n\u003cspan class='full-description hide'\u003eLearn the basics about water treatment, as a part of environmental chemistry. Human beings have added to the natural water cycle by taking water from rivers for use in our towns and cities. We are taking a huge amount of water from natural sources to use in our homes and industries. Lots of humans take water for granted. For some people water is a precious and scarce resource. Only 3% of the water in the world is fresh. Of this, three quarters is locked up as ice, one quarter is under ground and only 1% is above ground in rivers and lakes. Global demand for water is increasing hugely. Water is mainly used for irrigation of crops, and normally this needs no further purification. The next biggest user is industry. Sometimes, for example in food preparation very clean water is needed. Finally there is the domestic water. Some people are lucky enough to have domestic water piped to their house, and this is usually of drinkable quality and so undergoes treatment first. Piped water from the water works originally comes from rivers, lakes, reservoirs, or underground aquifers. A grill stops large floating objects, such as fish, from entering the water works. Next coagulants, such as Alum, are added which causes tiny particles in the water to cluster in lumps which then settle in the sedimentation process. The filter is made of fine sand to capture any particles that are left. Finally chlorine is added to kill any bacteria. If the water does not naturally contain fluoride ions they are often added as sodium fluoride as an aid to build strong teeth in those that drink the water. SUBSCRIBE to the Fuse School YouTube channel for many more educational videos. Our teachers and animators come together to make fun \u0026 easy-to-understand videos in Chemistry, Biology, Physics, Maths \u0026 ICT. JOIN our platform at www.fuseschool.org This video is part of 'Chemistry for All' - a Chemistry Education project by our Charity Fuse Foundation - the organisation behind The Fuse School. These videos can be used in a flipped classroom model or as a revision aid. 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