Infographic - The Composting Toilet

I got a prompt stating "From poop to prize onions: The process and use of the composting toilet." I chose to draw it by hand in my sketchbook (sorry for the photo quality), and show how the composting toilet works.

Notes, from top to bottom:

- vent rain cover

- fan

- vent

- toilet

- floor

- inspection door

- composting waste

- airflow

- finished compost

- access door

- excess liquid drain

How it works

• Instead of flushing with water, a composting toilet works using three elements: temperature, moisture, and oxygen
• Once you use the toilet you add a scoop of bulking material such as peat mix, sawdust or coconut fibers
• Since waste is 90% water, most of it evaporates through a ventilation system
• Aerobic bacteria breaks down the waste and bulking agents with the help of oxygen
• When bacteria work they maintain a temperature essential to composting
• After several weeks, the human waste and bulking agents have turned into compost