Water Filter
Intex 2,650-Gallon Sand Filter Pump
(Lawn Patio) Intex
Release date: 2009-09-01
2-year warranty
Sand filter for medium-sized pools and spas
Includes a skimmer basket
Price:
$242.99
$198.75
Answers
I have a science project where i need to filter water. I plan to boil it, but i can't boil it with sand and other solids. I think i can use something like coffee filters, if this is a good idea, where can i get them? from big stores like no frills loblaws etc.. if not, what do i use? where can i get?
Coffee filters would be perfect and they're cheap! You can find them at any grocery store and many discount stores.
An overview of the biosand filter and how Impact Nations is using it to rescue lives.
I have to do a project for school in which I must make a water filter...that will eventually filter impure, dirty water (no dye). I don't really understand how it works, and maybe with that info, i'll be able to make a better filter (and also there's a section that i gotta tell a bit of the science of it)
The impurities (assuming they are particles) will get trapped in the sand as the water drains through. You will have to separate the sand from the container the water goes in with a fine mesh.
If the sand is fine enough, this should work. You don't really say what's in it making it dirty. The best thing to use for dirty water is activated charcoal. The impurities bond to the carbon atoms as they pass through.
pls let me know the size & nr. of leyers . preferabley ingraph
Maybe this will help get you started:
http://www.oasisdesign.net/water/treatme nt/slowsandfilter.htm
Price:
$37.99
$31.67
Certified to remove parasitic cysts
Filter lasts up to six months
Reduces sediments, chlorine taste and odor
I am busy making my boat as self sufficient as possible.
So I wonder what sand I need to purify rain water.
I found the blueprints, read the test results ( chemical analysis ).
It should work and be safe, but I worry about the right grain size
for the sand.
Builder's sand contains contaminants that you would not want in your purified water. I'm guessing road construction sand is similar. How about silver sand or something similar? See what your local garden center has got.
Buy Cheap
- Lifegard Aquatics Filter Media, 3-Pound Bottle
Price:
$8.00$6.49High surface area for greater bacteria growth
Easily fluidized to improve filtration
Angular shaped for self cleaning action
A Living Building - The Paramus Post
Building in this age requires addressing multiple environmental concerns. For the Omega Institute — which is a center in Rhinebeck, N.Y., specializing in holistic living — those concerns mean designing beyond conventional codes and practices. Omega Institute recently unveiled a "living building," which filters 5 million gallons of wastewater each year through an indoor marsh and outdoor wetlands.
The OCSL may be the first green building to achieve the LEED Platinum certification and meet the Living Building Challenge, which is the highest standard possible for building performance. This means that the building provides all of its own electricity and heat through geothermal wells and solar photovoltaic panels. The building is constructed of reused materials and locally sourced concrete without additives. The heart of the building is a 4,500-square-foot greenhouse containing a water filtration system called the Eco Machine. There is a concrete marsh that is 15 feet...Cleaning (maintainence on) a (biological) slow sand filter ...
A biological sand filter (slow sand filter or Biosand filter) is maintained or cleaned by actively managing only the top 5 cm of sand. This top layer is either removed and replaced when the flow rate becomes unacceptable (typically 4 to 6 months) with clean sand or “wet harrowed” meaning the sand is gently agitated causing partial break up of the biological surface. A rapid sand filter is maintained and cleaned by forcefully injecting water backwards through the entire sand bed every 2 or 3 days. Backwashing a biological sand filter will destroy it and may result in people getting very sick if water from it is being consumed. A Frequently asked questions (FAQ) on biological sand filters can be found here.
The terminology used to describe water filters that uttilize sand and gravel to filter water can be confusing. A “slow sand filter” uses sand and biological methods to purify water. A “rapid sand filter” uses sand to filter water. Rapid sand filters do not make use of biological methods, although some biological action may take place between backwashing (cleaning). A “Biosand filter” is a modified slow sand filter, invented by Dr. David Manz. A Biosand filter uses biological and sand filtering and is designed to operate intermittantly. A “sand filter” is a general term used to refer to a water filter that uses sand as the filter media.
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