As part of grade 6's 'water' unit we visited a water treatment plant. There we walked around the plant and learnt how they cleaned the water from the river.Our first station was the filters. Water flowed into the water plant from the river and flowed through a filter to take out all of the large pieces of junk in it. It then went on to flow through a finer filter which took out all the tiny pieces of junk.
The second station was where special chemicals were mixed with the water to create floc. Floc is a combination of dirt in the water that the special chemicals make coagulate. The floc floats to the water.
Station number three was where all of the water flow into large pools to let the floc settle. Once it has floated to the bottom of the pool the floc is called sediment.
Station four is where chlorine is added. Chlorine kills most diseases and dirt. The disinfected water then flows out through a filter which removes all remaining chlorine and surviving diseases.
Our final station, station five, was a room with a few vials and chemicals where water is tested to see if it was potable, which means able to drink. Here we compared the dirty water with the clean water and saw the difference.
After the tour of the water plant we saw a movie about how to save water. In all it was an educational field trip.
1 comment:
Good job on most of this, Matthew. My memory was the second to last step almost simulated water in nature. Didn't water drain through a large sand bed, like it would as water moved down to the aquifer?
mh
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