Water Purification

Question: water purification.? friends i want help in constructing a working model of a water purifier which can purify grey and sea water to potable water. size may be portable. and cost efficient for a college science exhibition

Answer: Reverse osmosis is the most common way to purify saltwater for drinking.

Question: Need to know abt water purification system at home in chennai? I am planning to fix a water purification system at my home that could be attached to the overhead tank, so that we could use purified water for all home needs. But am not able to find one such... All i am able to find are water purifier that could be fixed to just a faucet.... Can anybody help me? Suggest me a water purification system.

Answer: Go for Hindustan Lever's Pureit

Question: How do I make a water purification system? I need to make one for Science class, with only materials that are usually found at home. I cannot add chemicals to the treatment process. No one is going to be drinking the water. The purification system should be able to remove garbage (leaves, rocks, wrappers) and clean the colour of the water, somewhat, so that the end product is a beaker of water that has no garbage in it, and somewhat clear. Like I said before, no chemicals, and no one is going to be drinking it.

Answer: first filter it using a coffee filter. then you will need to boil and condense it, to do this use a tea kettle and put a pipe of piece or aluminum foil over the end in the shape of tubing to capture the steam long enough to cool it ,have the other end of your homeade tubing go into your beaker. the steam will cool and condense and drip down the foil into the beaker and be clean pure water.

Question: How can you make a simple water purification system that separates water and salt or gravel for a project? It's for a project that we need to do. I need to make a simple water purification system that seperates water and salt and/or gravel for a project?

Answer: Distill it! Check out this website, it's really simple. http://en.wikipedia.org/wiki/Distillation Or poke small holes in the bottom of a plastic cup, and make layers of sand, gravel, and cotton (like cotton balls or a bandana) and pour the water in. That's easiest.

Question: Water purification system that takes humidity out of the air and converts it to drinking water? I have a client who says he sells a Water purification system that takes humidity out of the air and converts it to drinking water. He wants to sell this to businesses with the claim that it will save them money since they don’t have to buy 5 gallon water jugs for their water cooler. Has anyone ever heard of anything like this before? If so is there a website I can check out.

Answer: http://www.homefilteredwater.com/ http://allcrs.newsreview.com/MiscForSale/_1_995_xziex_atmospheric_water_generator_water_from_air/classifieds/ViewAd?oid=1343768 ******* pros and cons First, your talking about water that people ingest. Think of the liability for the company if they are producing their own drinking water for their employees and something goes wrong. Versus using another companies bottled water. Something like the filters or ozone generator fail and you get contaminated water... Second, when you remove water from the air, the air becomes more dry. To compensate for dry air in the winter months, we usually add water via humidifiers. During the summer months we remove water via air conditioning. if we remove more for drinking water, we MAY have to adjust the air conditioning or add water from a humidifer to make the air comfortable. Sometimes, the relative humidity is high enough that it may actually help to remove water via this apparatus. Depends on the climate and the office conditions. Third, this equipment uses a condensor and an ozone generating device. Although it claims to be very "efficient", condensors use electricity. So do ozone generating devices. (your home air conditioner is a condenser fyi). The company claims the cost will be as low as 10 cents / gallon to operate the condensor but that actual costs depend on the local utilities. Not sure what to make of that. I'd like to see the specs on the unit before I'd say it would save $. Fourth, the equipment claims to filter to 0.01 micron, ozonate the water, and remove funny tastes and odors. This means it uses a 0.01 micron membrane filter, a carbon filter and an ozonater. They all sound expensive to replace. probably quarterly for the filters and annually for the ozone generator. Meaning you need a maintenance contract All that said, it is certainly interesting. If your "distributor ship" accepts the liability for problems, if the cost was low enough per gallon to be attractive to the companies, if the conditions of the office were adequate for the equipment, it may work. Especially in todays world where drinking water companies are being questioned about the source of their water...

Question: What are the benefits and risks of iodine water purification tablets? I am hiking with a few people on a 24-mile hike (all day+) in Southeast Missouri wilderness. There is a free flowing semi-large stream (clear in most areas) nearby the trail. I'll refill my water in a canteen in the stream. Advice or good websites on this kind of water purification?

Answer: Iodine is extremely safe in it's inorganic form. It is one of the most misunderstood nutrients and of all the trace elements it is probably the most essential. If you read the book, "Iodine, Why You Need It, Why You Can't Live Without It" you would have no fear of taking iodine tablets or of using iodine for purifying water. I have been taking 12.5 mg a day in liquid form since the middle of January and my wife has taken 50 mg a day for 3 months in tablet form. Lugol's Solution and Iodoral are 2 of the safest iodine supplements available. I drink 6 pints of water a day and I add 1 drop of Lugol's 2% solution to each pint. For water purification purposes you should use 10 drops per litre of water or 4 drops per litre if using Lugol's 5% solution. If you don't like the iodine taste you can add vitamin C to neutralize the taste. More info here: http://www.high-altitude-medicine.com/water.html#chemical http://www.instructables.com/id/How-To-Purify-Water-Using-Iodine-Tincture/ Over 90% of humans are iodine deficient. You may find that you feel better while taking the iodine. While some persons may have a sensitivity to iodine ar even an allergy it is quite rare. More about Lugol's http://altcancer.com/lugols.htm More about Iodoral [tablet form of Lugol's] http://www.optimox.com/pics/Iodine/opt_Iodoral.htm

Question: Water Purification? I'm doing a science project on purifying water. I discovered that putting layers of sand, pebbles, and charcoal helped purify. WHY IS THIS???? THX!!!!PLZ ANSWERS!!!

Answer: This is only mechanical purification. The process of eliminating the residues and other suspended particles in the water. It is like eleminating flies and mosquitoes from the air using screens on our windows and doors. Chemically, water is not really pure yet if only by this process. It only removes the turbidity of the water. The charcoal absobs bad odor of the water.

Question: What is a present system of water purification which allows water to be purified to a potable standard? This is mainly in reference to the bacteria eg giardia and cryptosporidium. But links to websites that give the process of the water purification method used, any info etc etc all help much appreciated! thanks!! =D

Answer: Sedimentation and filtration are used to clarify water. Chlorination is by far the most widely used method of disinfecting water.

Question: Anyone know how to build a water purification system at home? Does anyone know how to build a water purification system using really simple or cheap things? A system that can remove odor, taste and other particles in order to make the water drinkable? Help would be really appreciated. Thank you. It's for a chemistry project in school. So i have to do it from home, and if i do buy anything, it has to be under 10 dollars.

Answer: Water purification is a complex undertaking. In industry these systems have a of engineering in them. You would need ion exchange and carbon bed to purify or a reverse osmosis system. You would be better off renting these from an industrial supply company.

Question: Where can I find out more about water purification? In doing research for some fiction I'm working on, the subject of water purification is sort of coming up more, and I'd like to know more about the water purification plants in the United States. The internet research I've done is leading me nowhere, and I'd like to find a book on the subject of water purification plants and/or the subject of purification in general. Any ideas, books, or website suggestions?

Answer: Water purification gets down to basically pulling other ions off of the water molecule. Nothing more interesting than that.. if you want to write about water purification, do it on Deer Island in Boston. Cleaned up the harbor pretty good.

Question: How can I make a solar powered water purification system? I need to design and make a water purification system powered by solar energy using household materials. I'm really not sure how to go about this and any help or advice is greatly appreciated.

Answer: Over in Africa they are using plastic bottles laid out in the sun for a few days to purify water. It's low tech but it works. You can read about it in the article below. And it can be done with simple household items.

Question: What type of shop sells water purification tablets? I'm looking to buy some water purification tablets. Anyone know where you'd get them? I'm in the republic of Ireland. We don't have that shop here.

Answer: Chemists should sell them and camping shops. Also big supermarkets.

Question: What occurs in aerobic treatment and chlorination of water in the water purification process of sewage? in the sewage water purification process, i know that first comes pre treatment then Flocculation, then sedimentation then Filtration but i dont know what the next two processes are about ? There are 2 more stages which are aerobic treatment and chlorination. what occurs during these processes and are there any chemical reactions and/or equations?

Answer: The short version Aerboic - good bacteria break down organic matter Chlorination - Primary - bad bacteria are killed/deactivated Secondary - some oxidation of organic material If you want the detailed versions, see the references.

Question: What is the best water purification system for "car" camping? My family of 6 will be car camping where we will need to use water from a local stream (in a wilderness area at about 5000-6000 feet.) I'm looking for a good water purification system. Weight is not an issue; small size is an advantage but not a big one. Effectiveness, reliabilty, ease of use and maintenance, and speed of operation are considerations.

Answer: Try going to www.rei.com, where the outdoor advisers are happy to help everyone with questions. They won't ask or care whether you are member or not, whether you buy anything or not. You can talk to them via real-time chat or on the phone.

Question: How does water purification work? I am doing a chemistry project on potassium permanganate (KMnO4), focusing mainly on the water purification aspect of it. I don't really understand how a chemical purifies water, just generally. I know that KMnO4 is a strong oxidizing agent, so I'm thinking that has to do with it. I tried looking it up, but couldn't find much. So how does water purification by a chemical work, and if you know more, how does KMnO4 purify water? Thanks.

Answer: As an oxidant, potassium permanganate can act as a disinfectant. For example, dilute solutions are used to treat canker sores (ulcers), disinfectant for the hands and treatment for mild pompholyx, dermatitis, and fungal infections of the hands or feet. Potassium permanganate, obtainable at pool supply stores, is used in rural areas to remove iron and hydrogen sulfide (rotten egg smell) from well and waste water. The removal of Potassium Permanganate is through adsorption using activated charcoal.

Question: Are water purification tablets a good option for home brewing water purification? Home brewing purest will either typically boil all water used for home brewing. I know some use filters that attach to the faucet and others use bottled water (which I'm convinced is just tap water). Will water purification tablets work without adding a odd flavor to the beer? ok, anyone have a more thorough answer than 'yes'?

Answer: Purification tablets are typically iodine, which can impart a strange taste to your water. As well, iodine is not that effective against virus (but I think you are more interested in killing bacteria). Bringing the water to a rapid rolling boil for a minimum of one minute is a very good way to kill any bacteria that might be in the water. I'm not a brewer but I'm pretty sure when you add the yeast you want to make sure it's the only microbe in there mucking about. Boiling the water right then and there ensures that there is no bacteria for sure. No chemicals are involved, no weird tastes, and you are guaranteed sterile water. Hope that helps.