The Open University since 2006
Alternatively you can skip the navigation by pressing 'Enter'.
Catching History's Criminals: The Forensics Story: A Question Of IdentityWednesday, 31st August 2016 22:00 - BBC FourThe story of criminality is the story of identity. Read more: Catching History's Criminals: The Forensics Story: A Question Of Identity
Catching History's Criminals: The Forensics Story: A Question Of IdentityThursday, 1st September 2016 02:30 - BBC Four
The Beginning and End of the Universe: The BeginningThursday, 1st September 2016 22:00 - BBC Four
Life Story: Growing upFriday, 2nd September 2016 00:00 - BBC Four
Full Steam Ahead: Episode fiveAvailable until Thursday, 29th September 2016 01:40The team head to the South Devon Railways, in this episode, and looks at the milk trains. Read more: Full Steam Ahead: Episode five
Taxes and privacy: A tech business reading listTax judgements, privacy concerns, wonky algorithms, Labour's digital plans and antitrust worries.... Listen now: Taxes and privacy: A tech business reading list
Full Steam AheadIt’s Full Steam Ahead for historians Ruth Goodman, Alex Langlands and Peter Ginn as they bring... Read more: Full Steam Ahead
Internet of everythingThe internet of everything (IoE) is the networked connection of people, process, data and things.... Try: Internet of everything now
Introduction to cyber securityThis free course, Introduction to cyber security, will help you to understand online security and... Try: Introduction to cyber security now
Without it we are dead! Water is essential, but what processes must it go through to become fit for human consumption? This free course, Potable water treatment, will guide you through the continuous cycling of water between land, open water surfaces and the sea before moving on to an overview of the water treatment and supply process.
After studying this course, you should be able to:
- describe the operation and mechanisms of the hydrological cycle
- list and describe the major physical, chemical and biological characteristics of clean fresh water, and explain their effects on aquatic organisms
- explain the mode by which potable water is produced through the processes of screening, microstraining, aeration, coagulation and flocculation, sedimentation, flotation, filtration and disinfection
- explain how the issues of nitrates, trace organics, fluoridation and plumbo-solvency can be dealt with in potable water supply
- describe the main desalination processes used to produce potable water from saline or brackish sources.
- Current section: Introduction
- Learning outcomes
- 1 Some facts about water
- 2 The hydrological cycle
- 3 The natural aquatic environment
- 3.1 Water, the medium of life
- 3.2 Dissolved oxygen
- 3.3 Physical characteristics of natural waters
- 3.4 Chemical characteristics of natural waters
- 3.5 Biological characteristics of natural waters
- 4.6 Tidal rivers and estuaries
- 4.7 Summary
- 5 Water treatment
- 5.1 Introduction
- 5.2 Preliminary treatment
- 5.3 Coagulation and flocculation
- 5.4 Sedimentation
- 5.5 Flotation
- 5.6 Filtration
- 5.7 Disinfection
- 5.8 Additional treatment
- 5.9 Membrane filtration
- 5.10 Fluoridation
- 5.11 Plumbo-solvency
- 5.12 Sludge treatment and disposal
- 5.13 Groundwater treatment
- 5.14 Desalination
- 5.15 Summary
- 6 Water supply
- Keep on learning
Study this free course
Enrol to access the full course, get recognition for the skills you learn, track your progress and on completion gain a statement of participation to demonstrate your learning to others. Make your learning visible!
Potable water treatment
This course is from our archive and it is an adapted extract from Environmental Control and Public Health (T210) which is no longer in presentation. If you wish to study formally at The Open University, you may wish to explore the courses we offer in this
Without it we are dead! Water is essential, but what processes must it go through to become fit for human consumption? This course will guide you through the continuous cycling of water between land, open water surfaces and the sea before moving on to an overview of the water treatment and supply process.
This OpenLearn course provides a sample of level 1 study in Technology
This free course includes adapted extracts from an Open University course which is no longer available to new students. If you found this interesting you could explore more free Technology courses or view the range of currently available OU Technology courses.
Copyright & revisions
Originally published: Thursday, 17th March 2016
Last updated on: Thursday, 17th March 2016
- Creative-Commons: The Open University is proud to release this free course under a Creative Commons licence. However, any third-party materials featured within it are used with permission and are not ours to give away. These materials are not subject to the Creative Commons licence. See terms and conditions. Full details can be found in the Acknowledgements and our FAQs section.
- This site has Copy Reuse Tracking enabled - see our FAQs for more information.
If you enjoyed this, why not follow a feed to find out when we have new things like it? Choose an RSS feed from the list below. (Don't know what to do with RSS feeds?)
Remember, you can also make your own, personal feed by combining tags from around OpenLearn.
All our alternative formats are free for you to download, for more information about the different formats we offer please see our FAQs. The most frequently used are Word (for accessibility), PDF (for print) and ePub and Kindle to download to eReaders*.
- Word (4.5 MB)
- PDF (3.1 MB)
- ePub 3.0 (10.6 MB)
- ePub 2.0 (3.6 MB)
- Kindle (1.8 MB)
- RSS (576 KB)
- HTML (10.7 MB)
- SCORM (10.7 MB)
- OUXML Package (67 KB)
- OUXML File (226 KB)
- IMS Common cartridge
*Please note you will need an ePub and Mobi reader for these formats.