Filter Testing

Filter Design


Large Pebbles: Weigh down cotton, remove large debris

Cotton Soaked in distilled water (pure H2O): Iron to displace hydrogen in wat er in order to create iron (III) oxide (precipitate) that can be filtered by coming layers



Charcoal: removes c hemicals that produce odours and tastes, prelimenary filtering

Gravel: Filters large bits of iron (III) oxide and larger particles left by pebbles

Fine sand: Filters smaller bits left behind from gravel.

Tea Cloth (2 layers): Prevents sand, gravel, etc from entering purified water, filters bits left behind from sand and gravel layers.









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Filter Testing
<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height: 15.0pt;background:white"><span style="font-size:10.5pt;font-family:"Arial","sans-serif"; mso-fareast-font-family:"TimesNewRoman";color:#333333;mso-fareast-language: EN-CA">    There were 2 runs done with the filter design we chose. The first run, result <span style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:10.5pt;line-height:15pt;">ed in water with a slight red ting to it. However prior to the first trial the filter was knocked in <span style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:10.5pt;line-height:15pt;">to slightly and this resulted in thelayers of the filter becoming slightly <span style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:10.5pt;line-height:15pt;background-color:white;">mixed up with one other which may  <span style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:10.5pt;line-height:15pt;background-color:white;">h <span style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:10.5pt;line-height:15pt;background-color:white;">ave caused the filter to be less effective. After comparing to the control it there it was discovered that there was a slight decrease in the amount of precipitate formed. <p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height: 15.0pt;background:white"><span style="font-size:10.5pt;font-family:"Arial","sans-serif"; mso-fareast-font-family:"TimesNewRoman";color:#333333;mso-fareast-language: EN-CA">  The second run was slightly more successful, the water turned out very clear as compared to the first trial, however once we put in the ten drops of CO3 it was clear th <span style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:10.5pt;line-height:15pt;">at the filter had not filtered all of the iron. Upon comparison to the control we noticed that there was slightly less precipitate, however the filter did not make a huge impact on the iron concentration in the water (similar to the results of the first trial). As such we concluded that the filter design we had created was capable of removing iron from contaminated water but not effective at removing the iron.

The visual to the side shows the results that were obtained (Each filter run was split into two samples for through testing). From left to right: control sample, filter test 1, filter test 2.