Passive treatment system

A passive treatment system is like a filter that cleans dirty water without using electricity or any other external energy source. It is like a magic potion that helps the water become clean and healthy again!

Here's how it works:

First, the dirty water is collected in a big tank or a pond. Then, it is allowed to flow slowly through a special soil or gravel called 'media'. This media looks like tiny rocks and has special bacteria living inside them. These bacteria are like superheroes that eat up all the bad stuff in the water.

When the dirty water passes through this media, the bacteria get to work and start breaking down the pollutants in the water. The pollutants could be things like heavy metals, chemicals, or other harmful substances. As the water moves through the media, it gets cleaner and cleaner.

Finally, the clean water comes out of the other end of the system ready to go back into rivers or lakes where it can be used by animals and plants. The whole process happens without any electricity or machines, and all the work is done by the bacteria living inside the media!

So, just like how eating healthy food makes our bodies strong and healthy, the bacteria in a passive treatment system eat up all the bad stuff in the water making it clean and healthy again!