Need 25 pages about specific water filtration techniques ASAP

I am in need of a freelancer who can create a Tutorial/Instruction Manual for educational purposes on water filtration techniques. The content should be technical in nature as it is intended for mechanical engineering students. The content should cover the following points:
- Air Stripping
- Water Degasification,
- Water Decarbonation
- Sand filters, gravity filters + (washing of the filter)
- Water Filter Nozzle
- Wastewater Circular Clarifiers

The course is intended to cover basic principles for each method, so don't go too deep into detail for each of them just to cover the pages.

Each method should have at least one picture and proper description of the process, its pros and cons, where and how it is used, with basic equations to the process. If there are some charts related to the process, then include them, but also explain the chart. Diagrams, pictures, equations and charts are welcome, but don't make them too large, the pictures should not take more than approx. 25% of the content.

IMPORTANT: You should also come up with example calculations for various properties i.e. filtered water flow rate, or some other for each method, like the required diameter of the classifier and similar. You can use any source available.

Sorry, but the deadline is very short, I need this until 8.1.20231, 18:00 (GMT+1).