I want to make an air filter using water as the filtration medium. I was going to try making a small prototype before making something bigger, so I was thinking of using a 2 gallon bucket and some acrylic tubing. Would a cpu fan be powerful enough to push a column of air down through a tube through the center of the bucket and into the water? I was thinking of a 1-1.5 inch tube.
Also, what would be a good power supply for the fan? I have some spare phone chargers, but they either have too low voltage output, or too low/high amperage output. For a typical cpu fan that wants 0.5, 0.7, or 1.0 amps, how many amps would be too much to power it?
the humidity will drastically increase in your room as water will act as a humidifier.
also a CPU fan will never be powerful enough, it has design flaws that makes it incompatible with pressure difference.
i'm not sure but maybe use pic related ?
you'll also need an air stone to make the bubbles smaller.
I'm thinking of making an electrostatic precipitator, maybe it would be a good alternative for you too.
for test purposes, you can use a hand-held vacuum cleaner and an adapter made from duct tape.
as for power, two points: (1) you can put various phone chargers in series to increase voltage from 5 to 10 to 15 etc. (2) as for amperage rating, there is no such thing as too high. if you hook up a load that takes 0.1A at 5V, it doesnt matter if the supply can put out 10A, it'll still only take 0.1A coz it's the load that determines current.
Assuming you'd actually manage to make this work, you'd eventually make yourself violently ill, probably with some form of pneumonia, as you'd be depositing bacteria, mold and fungal spores, virii, and whatever else is alive in the air into the water, which would rapidly become a wonderful breeding ground for them; you might even contract legionella, which is not Amateur Night shit to get sick with. Give up and use a dry air filter instead.
The end goal is to connect a larger version (5 gallon bucket-sized) in series with my dust separator that I used with my shop vac. It does great at separating sawdust, but not drywall dust or silica dust. I figured if I put a water filer after the separator, I might catch more of the fine dust. The water would be replaced probably once every 2-3 times of moderate or heavier use.
>I want to make an air filter using water as the filtration medium.
It's how Rainbow vacuum cleaners do it.
This works well for getting solid stuff out of the air, but it has a downside in that it puts a HUGE amount of humidity into the air as well. That tends to cause mold growth. So it is okay for something that will only get used occasionally, but it won't work for leaving it running all the time.
Do note: Rainbows have this oil you put in the water before beginning. The oil is scented but the main purpose of the oil is to allow the finer dust to stick to the surface of the water, which it normally will not do. You can do the same thing just by putting a drop or two of dishwashing detergent into the water of your home-made version.
Rainbows are nice but expensive. I have a little shop vac I modified to do this ages ago; it picks up huge amounts of stuff in the water even when the floors look clean. The only downside is that you must fill it with water before use, and empty it after and leave then the top off to let it dry out, or stinky mold grows in it. I use the 'wet' filter and a lot of junk sticks to that as well, but then, I built this thing quick and cheap at the time. And I've never re-done it, since it does pretty well as it is.
>Would a cpu fan be powerful enough to push a column of air down through a tube through the center of the bucket and into the water?
You don't need to bubble the air *through* the water; just blowing the column at the surface of the water will still get a lot of stuff (-if you add a couple drops of soap to the water). But,,,, cheapo shop vacs only cost like $30 tho.
>It does great at separating sawdust, but not drywall dust or silica dust.
That's because those are very lightweight powders. They will collect in a paper filter if the porosity rating is low enough.