Water Treatment Plant

Last Thursday, we went to a water treatment plant, there we learnt how people clean water. There were 6 stages, after we went to the stages we watched a movie made by the water treatment plant people.

The first stage was called Garbage Removal, where they take all the some dirty water from the river and they put it in a little area, then they take this scoop thing and put it to the bottom of the water and scoop out all the plastic, leaves, papers, etc. And if the garbage is not all taken out then they continue to push the water to a different are, and do the same thing with another scoop.

Stage 2 was to add alum to the water, and mix it, so the flock coagulates, and it is done because they want all the flock to stick together.

Stage three was to let the flow into another pool, and to let the flock settle to the bottom, once it has settled, it can be called sediment.

Once stage 3 happens, they start stage 4, and that is to let the water filtrate through sand, but they don't use the same sand you get at the beach or the playground, they have to use this very special and small type o sand, to set the trap for the remaining bad things.

Stage 5 was about adding chlorine, which is a disinfectant so they can kill the bad bacteria. The chlorine is not seen underwater.

The final stage was to test again if the water is OK. They need to test to make sure the water is safe to drink!

The movie was about this kid named Jali, who has club fair at his school, and he joins a water cleaning club, the captain of the club is Bondol. He goes underwater with Bondol and learns how to clean water. The field trip was fun!