As a member of a project team with the National Environmental Agency(NEA), you have have been given a project called "Water Technology and Our Life". The objective of this project is to create awareness and educate children between the age group of 10-14 years old in water resources and pollution control in Singapore through a video presentation. Design a video with length of 5-8 min. The video should be entertaining and educational from the following topics minimum ONE topic or Maximum TWO topics in water technology.
e)Wastewater Treatment Technology.