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Step
1: Filtration This is when we take the dirty water and put it through a filter. By doing this we remove the larger sediments. There are a lot of sediments and small organisms in the water that are not good for you. At the water treatment plant they do they same thing but with better equipment. |
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Step
2: Coagulation This is when we gently mixed some powdered alum into the water for four minutes. This makes it so that all the smaller particles stick together so they will sink to the bottom of the bottle. At the water treatment plant they mix the alum and another agent called polymer. |
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Step 3: Flocculation & Sedimentation This is when we let the bottle sit for ten minutes so that the sediments would sink to the bottom. It takes time for the sediments to settle and due to gravity they will sink to the bottom as they get heavier than the water. At the plant they also have to give the sediments time to combine together. |
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Step 4: Disinfection This is when we mixed two droplets of Clorox bleach into the water to insure disinfection. The chlorine will kill all of the bacterium that is still in the water. At the treatment plants they use ozone as the main disinfectant and chlorine as a secondary disinfectant. |
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Step
5: Filtration This part of the project we filtered the water by running it through rocks, sand, and charcoal into a beaker for the finished result to insure clarity. This gets out all of the remaining sediments in the water. At the treatment plant they do the same thing but at a larger scale. |
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This is what the finished protect looked like compared to the beginning
project. The left beaker is raw and the right is filtered. You might
not be able to tell but the finished product looked almost like the water
that we drank. It was a little foggy but it looked one hundred times
better than at the beginning. |