A remarkable and inexpensive way to produce clean water

[garyshouse305]

Water Crisis - A Solution.wmv

[mikepousti]

keep on doin ur stuff :D

[porn1978]

@28 seconds he pours the glass of dirty water on the ground instead of just pouring it into the filter.

[EyesOfRapture]

It's a great start. Too bad a similar device isn't commercially available for solar power. I dream of a day when a device can be made that will suck enough moisture out of the air to meet a household's needs so we can tell the water barons to piss off for good. Nice to think about, but that would no sooner happen than they would start claiming rights to air moisture. For those of you complaining about the effectiveness of this thing, it's still better than NO filtration for these people.

[claudesclassics]

hello this is great news for the clean water, i have also seen other types of filter systems very similar to this one , can i add some criticism please, ok when you poured the bucket of water in you shoulkd have up top layer like a defuser with holes in it not to stir up the top layers of sand as this is where the cleansing beggins..ok my friend all the best and good health to your village...thank you for reading this reply...bye from Australia....bye...

[101101101777]

Do minerals make it through the sand filter aswell?

I think even the developed nations could benefit from this. The US has flouride, chlorine, pharmas and rocket fuel in the water, plus bugs and viruses. Effort divested into huge treatments plants when one of these in ever home could suffice, especially in emergencies. First tho industry and regular people must stop contaminating freshwater with chemicals, putrid feces from us and farming ops.

[1337skiller5]

Do minerals make it through the sand filter aswell? -.- YES and so does the bacteria, this is a max 100 micron filter.

[ACFinternational]

Acorntechnique:

Sorry for the late reply:

The bio-sand filter actually filters out 90-100% of all harmful coliform, which is well within World Health Program standards for drinking water. It does this thanks to a special bio-active membrane (known as a Schumtzdecke) that eats all the dangerous germs. To create this membrane, each bio-sand filter is primed with water over a 21 day period & cant be allowed to dry out. But its a pretty amazing technology that isnt difficult or costly to set up.

[CapitanoGUC]

so there is no money in it - so it want be made popular ... - there you can be sure ....:-/

[antalz]

Boiling doesnt get annoying microparticles.

The filter doesnt get bacteria.

Combined, they can clear water.

Too bad dissolved salts will still be in there. Only destillation really works against all badness

[acorntechnique]

I tried to explain this in not so many words to some loud mouthed and highly opinionated idiot named

mainstream1967.

In order to remove pathogens (bacteria, micro-organisms, viruses etc) a system of filters down to at least 2 microns is required - or ultra-violet filtration.

Ok so he has a glass of clear water.

Whoop Doo!

It's not drinkable. It might be clear, but its not safe, and it's CERTAINLY NOT pathogen free.

That water is good for washing and maybe bathing - nothing more.

[antalz]

UV is a good way. But in africa, where woodburning isnt illegal as far as i know, boiling it over a fire is the way to go i gues. And ur still stuck with desalinising = [ but getting dirt out with his filter works i gues. But doesnt it work thesame with a coffee filter? or any other ole filter?

[acorntechnique]

A coffee filter or other 'old filter' will filter many things in suspension, but very little or nothing in solution.

A minimum of 2 microns is required to effectively remove all pathogens but in doing so will also remove all minerals which will then lead to other serious health problems.

using 2 micron filters represents extreme filtration and should therefore only be used in extreme cases - and not for extended periods of time.

[acorntechnique]

UV is the best way as it is guaranteed to remove all pathogens without removing any of the minerals. UV systems are also cheap.

Alas, many areas of Asia and Africa don't have reliable power sources.

[soloassault]

@acorntechnique UV is great if u have good logistical support for upkeep and mantenace, like here in the US or many other developed countries, however, filtrate systems are VERY effective when it comes to removing contaminates, and with a little chemical treatment for the few that might make it though. then you have a cheap, easy to maintain sustainable water supply. that requires NO outside energy, only a little attention and light labor.

[acorntechnique]

you have written:

'Only distillation really works against all badness' - that's a misleading comment as distilling water drinking introduces problems of its own.

Process which involve boiling or distillation of water for consumption should always be treated as temporary solutions.

[antalz]

what? Destilation results in a purity suitable for chemistry. You get 100% pure grade A water out of it, supposing ur setup isnt fked up.

[acorntechnique]

I am getting so fed up with people on this page who's understanding of human biology is nothing short of nonsense, yet they feel 'qualified' to comment regardless.

FACT: boiling or distilling water removes minerals essential to human health and therefore should only be used in emergency situations.

Distilling water is for consumption is NOT a solution for the human organism.

[antalz]

If u get most of ur minerals from water, something is wrong. I'd like to get mine from plants and meat. Best tap water contains is calcium and a bit of iodine here, is that suitable to drink?

[jtg001]

@acorntechnique; Remember distilling is not the same as boiling. Distilling will remove mineral components while boiling will CONCENTRATE them. Is distilled water bad for you? Yes. Why? Fick's Law and Le Chatelier's principle . Minerals in the body would be leached to the water in your system to reach an equilibrium. Is boiled water safer... well, though the germs are dead, they are still they and can still propagate another population.

[B4realalready]

@jtg001 I've been drinking distilled water for a long time.  Thanks for the info. Guess it's time I invested in a filtration system. Any recommendations? Thanks.

[jtg001]

@B4realalready: I haven't heard anything bad about the Brita, but I think it's kinda silly if your concern is health related. Yes, it'll taste different, maybe even better, but the water we get is very clean. AND unless you are willing to invest a few hundred dollars on a personal reverse osmosis unit, you really aren't "cleaning" it anymore, so if you're source is bad, you = S.O.L. Also note, if you don't keep up with the filters on these, they make excellent breeding grounds for Germs

[B4realalready]

@jtg001 Our city water is supposedly clean and safe. It smells and taste really bad. Extremely strong taste of chlorine. I drink a minimum of three qts. of water a day. No soft drinks ever. I just need a filter to get the chlorine taste out. (not at the exspense of breeding harmful bacteria in filter)

[bill65761]

@B4realalready Just let it sit, uncapped. The chlorine will off-gas.

[bill65761]

@jtg001 Would you mind explaining how it is that the dead germs are going to breed? NEW germs enter and breed ... but only because someone was sloppy after the boiling.

[jtg001]

@bill65761 I'm sorry... what are you referencing to? I think you took one of my comments out of context. If this is about Britas being an excellent grem breeding ground; one does not boil water before using said device. If you did... well, good for you, I guess. :/ However, it would be a bit of an overkill process for the developed world, and the Brita/ boiling combo is not very practical for the developing world.

[mainstream1967]

I will not mark down your comment, as your answer speaks for itself. You are a non listener. He never claimed it to be ONLY sand. I've wasted even too much time with you. Learn to listen.

[acorntechnique]

Ok so the machine can render cloudy water clear.

But what about the adverse biology present?

[mainstream1967]

it is a bio filter. And he clearly states it is rid of all the contaminants. LISTEN!

[sploonge1]

reverse osmosis?

[NETSEMRY]

what about micro organisms? shouldnt the water have been boiled first?

[Tantoin]

The biosand filter was created and designed to naturally kill micro organisms through introducing other micro organisms which eat the other micro organisms. This is a brilliant invention and there have already been tens of thousands of these made in the last 10 years since it was created which have drastically reduced deaths in 3rd world countries where they have been introduced. Visit cawst . org for information about this filter and how you can be trained to make them for others.

[acorntechnique]

But that's not what he says. he calls it a basalt filter and basalts cant destroy pathogens.

[Tantoin]

You obviously can't understand David Githiri's Kenyan accent because he is saying "biosand" not "basalt". Also if you read the intro or educated yourself about the biosand filter invention you would never have said such an absolutely baseless statement such as:

"That water is good for washing and maybe bathing - nothing more. "

Here is a manual containing various lab and field pathogen removal research facts about the biosand filter.

alturl . com / 4mt3

[Tantoin]

You may also write the inventor/developer David Manz questions directly and read other materials and research on the biosand filter at his website:

manzwaterinfo . ca

manzwaterinfo . ca / gmans . htm

[dijimeeks]

any explanations on how to build it?

[ashantilongislant]

it is seramic, built with ground rice and some other natural material.

it is then coater with silver for additional purufication. the best thing id=s there is no plastic residue in seramic filters. so the water is beter than commersial plastic filters. google the how to make it vid.

[Tantoin]

"it is seramic, built with ground rice"

The one in the video and most are made of a concrete outer shell or other non biological material. Ground rice or any other biological material is NEVER incorporated into a biosand filter, it would defeat the filter's biolayer effectiveness at removing pathogens. You are confused with some other type of filter. If you want a manual or training on how to build them for people in the 3rd world go to the sites I have posted and they will help you.

[Oceanica22]

remember the only really damaging components in the water are the micro organisms and they are still in the water, only drink this in emergency, if you can, boil the water a few minutes minimum. But I guess, if you guys don't get sick, GOOD ON YA GUYS!

cheers from Australia