Water Tanks and Plastic Chemical Tanks, Polyethylene and
Fiberglass are your best choice
Easy or Complicated collection
Quick Overview of Rain Water Harvesting - Collection and Storage Tanks... by
To harvest rainwater you will require a collection system, this will consist of
a rainwater accumulation area (roof), plumbing to route the water to a storage
tank. With the above in place you now have a basic rain water collection system.
Depending on your goals you may add other equipment to pressurize the water, and
further filter the water for variety of applications.
You may plan to use the rainfall for plants, industrial water supply, firewater,
or domestic home uses. While this is an overview of rainwater collection, keep
in mind there are several elements to consider.
1. Remove particulate, leaves, dirt and other foreign
matter, that may have an negative impact on your accumulated rain water. Tree
leaves and foreign matter (grit, soot and roofing material) in your rainwater
tank, may produce a biomass that acts as food to algae growth and bacteria..
Pre-filters on the inlet to your water tank allow you to periodically remove
leaves and most of the particulate, that may come off the rainwater collection
2. Chlorine, State regulations for chlorine residual introduced into your
rainwater tank to kill algae and other bacteria that are harmful to people and
animals. Consult your county extension agent for information on chlorination
residuals, there are simple test kits that allow you to determine these numbers.
3. Make your plumbing simple and close to the tanks, the further the tank is
from the collection point, the more pressure or elevation is required to deliver
the rain water to the storage tank.
4. We prefer polyethylene as a storage tank material,
resins are NSF 61 approved for potable water storage tanks. Poly tanks are
resistant, with 25-30 years of maintenance free use a norm.
5. Post storage tank filtration, there are many filters
that can address your application for harvested rainwater. Most rain water
collection systems will require particle removal at some level. Equipment may
find large particles - foreign matter problematic, drinking water filters will
load quickly due to small particle sizes of unfiltered material, spray nozzles,
etc. Available filters include, bag filters, screen filters, sand filters, media
filters, DE filters, small micron and sub micron filters.
6. Re-pressurization; Once you have accumulated, harvested rainwater, you will
want to deliver this water to a variety of points, irrigation, farm animals,
industrial demand points, home water filtration systems.
The storage tank will only produce pressure based on its relative elevation to
your points of delivery. As elevation only produces 1 PSI for each 2.34 feet of
vertical head. It is unlikely your rainwater storage tank will give you a
desired pressure output without an additional pump. A pumping system should be
capable of producing your required flow rate, measured in GPM (gallons per
minute) at a given PSI (pressure measured in Pounds per Square Inch) 40-60 PSI
is a good average pressure, (range found in municipal water delivery systems).
Stainless steel centrifugal pumps, close coupled with built in pressure switches
provide long term solutions to this application.
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Chemical Resistance Information & Tank Safety
Email your requirements to
Art Woods at firstname.lastname@example.org
or just call to discuss your application at 800 537 9444
Mail: AlltanksCom - PO
680747 - Houston, Texas 77268
Ship: AlltanksCom - 32926
Tamina Road - Magnolia, Texas 77354
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