For my science project how can i make a device that turns dirty water into clean water? a simple device?

Saturday, October 3rd, 2009 at 6:09 pm

For my science project how can i make a device that turns dirty water into clean water? a simple device?
plz talk in 13 year old language
need some good answers i have to do my project in 2 weeks

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6 Comments

ngc7331 says:

October 3, 2009 at 6:09 pm

If the water is dirty due to biological contaminates (algae or bacteria or animal wastes) you can super heat the water in a pipe using the sun. Basically you focus the sunlight across an entire 100ft length of plastic tubing. The sunlight will literally cook off the biological contaminates and give you clean water at the other end. This only works for biological contaminates, it does not work on chemically contaminated water.

I hope this helps. Good luck.
thinkin' out loud says:

October 3, 2009 at 6:09 pm

Just use a very fine screen or cloth over the top of a cylinder, fill the cylinder with activated charcoal (like for fish tanks) punch holes in the bottom of cylinder to let water through, and pour. It would be best to use a long, narrow cylinder.

You could go to hardware and get the smallest diameter stove pipe they have, or a piece of 2" or so diameter PVC water pipe. I don’t know where you would get screen fine enough to block some solids, but if you could find cheese cloth somewhere, or get an old sheet with a high thread count and put a piece of it on top and bottom. This should work if the water’s not too dirty. Good luck.
eyecue_two says:

October 3, 2009 at 6:09 pm

You want to be able to drink it? What I would do is get a piece of plastic PVC pipe that is about 1 1/2 to 1 inches in diameter and 8 inches long, get a cap for one end. Drill a hole in the cap. Get some coffee filters and cut one to just fit inside the cap. Put the cap with the filter inside it, onto one end of the tube, next get some activated charcoal from a pharmacy and put about two inches of into the end of the tube that is open, place a coffee filter over that by either cutting it to size or packing it in on top of the charcoal. Next get some sand and put about an inch of sand on top of that filter, then put in another filter, then you need some aquarium rock onto of that. place a window screen piece over that and you have a filter. This probably wont make the water sparkling clear though. You need to photograph your steps and test it when you are done. If you want to be able to have water that you can drink, use this filter to run the dirty water into a flask that you can boil the water in, then use a distiller cooling tube to covert the steam back to water and you will have almost perfect water. the filter is used to catch all the big debris that is in the water and the charcoal takes out the chemicals like chlorine. The filter wont last forever though. IT has a life span that is dependent on how dirty the water is and how much you run through it.
philrobeson says:

October 3, 2009 at 6:09 pm

OR…you can buy these:

http://www.campingsurvival.com/milwatpurtab.html
ESes says:

October 3, 2009 at 6:09 pm

You need to pour the water through a series of filters and then boil it.

1) Pour it through a Coffee filter to get rid of big stuff.

2) Pour it through an "air filter":
Yours needs to contain: (look on box) a 0.4 micron filter: to filter out bacteria and anything bigger
An activated carbon filter : to trap and thus remove charged organics
( chlorine, sediment, and volatile organic compounds)

Now you are left with charged minerals: and here is the hard part.

3) To remove charged minerals you will need charged beads: You will have to get them from a science lab at your school. Basically what you will do is mix the rinsed (in clean water) beads with the almost clean water, swirl them, and then get them out of the water with your coffee filter. You will have to do this twice: once with positively charged beads, and then once with negatively charged beads.

Now you are left with viruses and other bugs smaller than 0.4 microns. These can be killed by boiling.

4) Boil the water. Let it cool.

This is your "clean" water.

It probably really IS pure. But dont drink it! (just in case)
gribbling says:

October 3, 2009 at 6:09 pm

Well – the others have all concentrated on filtration techniques.
The other obvious way to purify water is to distill it…

First filter the water through gauze to remove any large particles.
Then boil the water in an alembic:
http://en.wikipedia.org/wiki/Alembic
They’ve been used for hundreds of years, and shouldn’t be difficult to construct.

Water Filters

Water, especially clean and pure water is something that most of us probably take for granted. In the good old days of the distant past, most people could just drink tap water without any worries of any contamination. Nowadays, it is a completely different story. Having a good water filter for your home and for your drinking water is essential, unless, of course, you buy bottled water for all of your drinking water needs.
There is plenty to be concerned about when it comes to drinking water and the contaminants found in most tap water.
There is bacteria, strains of antibiotics, fluoride, chlorine, lead and other heavy metals and sometimes benzine and other harmful materials.
When looking at various makes and models of under the counter and counter top water filters, check to see exactly what they do and do not eliminate. Some remove only the heavy metals but do not remove other toxins that require a more sophisticated method of filtration, such as reverse osmosis.
Out of all of the water filters, there are only certain ones made for home use that actually remove all of the pathogens and chemicals such as fluoride and arsenic. Many of the other filters leave these toxins in the water even after it's been filtered.
It is very important to get the best possible water filter that will provide you with truly pure drinking water with the least amount of contamination and impurities possible.
Some refrigerators have water filters that are built right into the door. Some of these work well but most do not eliminate all of the chemicals from your water.
Personally, I prefer the Gary Null brand reverse osmosis water filter.
The Gary Null Water Filter is an advanced multimedia system. It combines the unparalleled bacteria and parasite removing performance of ceramic, with the chemical reducing ability of activated carbon, blended with a lead-eliminating media. Activated carbon removes more chlorine than any other material available on the market. For those individuals who want to eliminate fluoride from their water, the Gary Null Filter also contains a fluoride removing filter.
If you really want the best water filter for your money, this is the one to get and it's not really that expensive.
It sells for around $320.00 and the filters last about one year. The replacement cost for both filters is around $160.00 or so.
If you are looking for a cheaper way to drink purer water, you can surely afford a brita water filter, which does do quite a lot of good, but does not go as far as a more expensive and more effective water purification system.

Best Water Filter

For my science project how can i make a device that turns dirty water into clean water? a simple device?

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