Waste water treatment GCSE Chemistry lesson

Waste water treatment potable water diagram with steps. Urban lifestyles and industrial processes produce large amounts of waste water that require treatment before being released into the environment. Sewage and agricultural waste water require removal of organic matter and harmful microbes. Industrial waste water may require removal of organic matter and harmful chemicals Lesson objectives: State sources of waste water, Explain the steps involved in the treatment of sewage, comment on the relative ease of obtaining potable water from waste, ground and salt water. This lesson follows on from the potable water lesson here https://www.tes.com/teaching-resource/potable-water-lesson-12502600. All the slides in this lesson are fully animated and include answers to every mini plenary question and exam question. The breakdown of the slides is as follows:
Slide 1 - Title and 5-minute starter. The starter is a grid of four questions entitled ‘last week, last lesson, today’s learning and future learning’. Use this generic slide for all of your lessons by simply changing the questions and the answers each time.
Slide 2 - Lesson objectives (see above)
Slide 3 – Intro to urban lifestyles and industrial processes
Slide 4 – Hinge question: Can you name specific examples of sources of waste water?
Slide 5 – Source 1 of waste water – domestic
Slide 6 – Source 2 - agricultural
Slide 7 – Source 3 - industrial
Slide 8 – Mini plenary questions, answers animate on screen
Slide 9 – Steps involved in treating waste water: Step 1 - Screening
Slide 10 – Step 2 - Sedimentation
Slide 11 – Step 3 – Anaerobic digestion
Slide 12 – Step 4 – Aerobic biological treatment
Slide 13 – Solutions given for the products at each electrode for the electrolysis of aqueous sodium chloride solution using the golden rules
Slide 14 – Special mention for the half equation for the oxidation of hydroxide ions to form oxygen and water, as this one is particularly difficult.
Slide 15 – ALT (Applied learning time). 6 mark exam style question, designed to test students’ understanding of the whole lesson. Answers animate onto the screen.
Slide 16 – Plenary. Cold call questions which animate onto the screen with pupils’ names attached as a final check that learning has taken place and that you have done your job!
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