Ritical account of guest lecture from Southern water

Please write a guest lecturer from Southern Water lecture review. Ive uploaded a handout from this lecture. In your review you need to show some knowledge about the topic, and explain why you chose this lecture amongst the others ie. why it was interesting. In my opinion it was interesting because eg. Wastewater Treatment Processes were supported with films from youtube so you could see how these prosesses look like in practice. Also at the end of the lecture he showed us this film: watch?v9xPM6duS1Og which I think was also nice and interesting.