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For this project we were assigned to find a solution to a water crisis. These water crisis' could range from that of finding water during droughts, purifying water for drinking, cleaning grey water for agricultural uses, and many more. My group chose to clean grey water so that we could use it for watering plants and other things.
Our Model Filter:
Our Model Filter:
This was our prototype filter. We layered it with,
Activated carbon chips
sand/fine rocks
Large pebbles
coffee/fabric filter
Bottom cover (plastic with fine holes or cap)
This would filter out most of the unwanted substances and chemicals in our grey water.
Our Water:
Our Water:
Our water started off with a lot of bacteria in it. It had dirt, soap, and bacteria in it. After put through our filter however you can see that even the visual look of it was much different. Instead of the cloudy and dirty water we started with, we now have clean and pure looking water.
Testing:
Testing:
We used testing to find our final results of filter. We first tested for pH with both a manual (left) and digital (right) tester. This gave us the result that the pH actually went up but not enough to make it toxic. We also tested for Iron which we found went down in a small increment.
Content:
Content:
Adhesion: Adhesion is the attraction of molecules of one kind for molecules of a different kind, and it can be quite strong for water, especially with other molecules bearing positive or negative charges.
Cohesion: Cohesion or cohesive attraction or cohesive force is the action or property of like molecules sticking together, being mutually attractive.
Polar Covalent: A polar covalent bond exists when atoms with different electromagnetism share electrons in a covalent bond.
Non-Polar Covalent: A non-polar covalent bond is a covalent bond in which the bonding electrons are shared equally between the two atoms.
Polar Molecule: A molecule with a difference in electrical charges between two ends. It was important for us to understand polar molecules because they show us how the bonding will happen in our project.
Ionic: A chemical bond formed between two ions with opposite charges. Ionic bonds form when one atom gives up one or more electrons to another atom.
Surface tension: Surface tension is the property of water protecting it from being affected by external forces. This property was not expressly used in our project, but it is an important property nonetheless.
Oxidation: The loss of electrons during a reaction by a molecule, ion, or an atom. This concept was important for us to understand because it is one of the reactions that causes lead to leach into the water supply.
Dipole: A bond or molecule whose ends have opposite charges. This was an important concept to understand because in order to contaminate the water bonding needed to happen.
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