Water tank
Container for storing water
A water tank is a container for storing water.
Water tanks are used to provide storage of water for use in many applications, drinking water, irrigation agriculture, fire suppression, agricultural farming, both for plants and livestock, chemical manufacturing, food preparation as well as many other uses. Water tank parameters include the general design of the tank, and choice of construction materials, linings. Various materials are used for making a water tank: plastics (polyethylene, polypropylene), fiberglass, concrete, stone, steel (welded or bolted,[1] carbon, or stainless). Earthen pots, such as matki used in South Asia, can also be used for water storage. Water tanks are an efficient way to help developing countries to store clean water.[2]
History[edit]
Throughout history, wood, ceramic and stone tanks have been used as water tanks. These containers were all naturally occurring and some man made and a few of these tanks are still in service. The Indus Valley Civilization (3000–1500 BC) made use of granaries and water tanks. Medievalcastles needed water tanks for the defenders to withstand a siege. A wooden water tank found at the Año Nuevo State Reserve (California) was restored to functionality after being found completely overgrown with ivy. It had been built in 1884.[3]
Types[edit]
Chemical contact tank of FDA and NSFpolyethylene construction, allows for retention time for chemical treatment chemicals to "contact" (chemically treat) with product water.
Ground water tank, made of lined carbon steel, may receive water from a water well or from surface water, allowing a large volume of water to be placed in inventory and used during peak demand cycles.
Elevated water tank, also known as a water tower, will create a pressure at the ground-level outlet of 1 kPa per 10.2 centimetres (4.0 in) or 1 psi per 2.31 feet (0.70 m) of elevation. Thus a tank elevated to 20 metres creates about 200 kPa and a tank elevated to 70 feet creates about 30 psi of discharge pressure, sufficient for most domestic and industrial requirements.
Vertical cylindrical dome top tanks may hold from 200 litres or fifty gallons to several million gallons. Horizontal cylindrical tanks are typically used for transport because their low-profile creates a low center of gravity helping to maintain equilibrium for the transport vehicle, trailer or truck.
A Hydro-pneumatic tank is typically a horizontal pressurized storage tank. Pressurizing this reservoir of water creates a surge free delivery of stored water into the distribution system.
Glass-reinforced plastic (GRP) tanks/vessels are used to store liquids underground.[4]
Design[edit]
By design a water tank or container should do no harm to the water. Water is susceptible to a number of ambient negative influences, including bacteria, viruses, algae, changes in pH, accumulation of minerals, and accumulated gas. The contamination can come from a variety of origins including piping, tank construction materials, animal and bird feces, mineral and gas intrusion. A correctly designed water tank works to address and mitigate these negative effects. It is desirable that water tanks be cleaned annually to reduce delivery of algae, bacteria and viruses to people or animals.[citation needed]
A safety based news article linked copper poisoning as originating from a plastic tank. The article indicated that rainwater was collected and stored in a plastic tank and that the tank did nothing to mitigate the low pH. The water was then brought into homes with copper piping, the copper was released by the high acid rainwater and caused poisoning in humans.[citation needed] Since the plastic tank is an inert container, it has no effect on the incoming water. Good practice would be to analyze any water source periodically and treat accordingly, in this case, the collected acid rain should be analyzed, and pH adjusted before being brought into a domestic water supply system.
The release of copper due to acidic water may be monitored by a variety of technology, beginning with pH strips and going to more sophisticated pH monitors, indicate pH which when acidic or caustic, some with output communication capabilities. Most of the algae growth occurs at an optimum pH, between 8.2 - 8.7. pH level that is neutral or lower can help to reduce the growth of algae. Potential algaecide, shock product will help to clean swimming pools or water tanks from algae. In this process no need to use vacuum cleaner to remove algae.[5] There is no causative link between the plastic tank and copper poisoning, a solution to the problem is to monitor stored rainwater with pH indicators and add appropriate treatment materials.
See also[edit]
References[edit]
External links[edit]
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500 Gallon Free | 1000 Gallon Spherical Tank | ||||
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| HORIZONTAL BOX WATER TANK The low profile design of this tank makes it ideal for use on trailers or in the back of a truck. The slosh reduction ribs provide excellent structural support. It can also be used as a stationary water storage tank. | |||||
| FREESTANDING WATER TANK These tanks have been designed with residential and commercial applications in mind. The dimensions of the tanks allow them to fit through a conventional doorway. The design of the free- standing/self-supporting tanks eliminate the need for a steel support frame. | |||||
| 1000 GALLON SPHERE The 1000 gallon sphere is one of our more specialized tanks that is used on trailers/nurse trailers. The advant- age of using this type of tank and trailer combination is that it has a shorter wheel-base which means less sloshing and the design of the tank allows for easy mixing of product. | |||||
| LOW PROFILE WATER TANKS The low profile tanks may be used for storage or trans- port. They are an excellent choice when height limitations are a factor and are the perfect height for putting under your cottage or cabin. | |||||
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250 Gallon Freestanding Water Tank Technical Drawing |
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1500 Gallon Freestanding Water Tank Technical Drawing |
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1600 Gallon Freestanding Water Tank Technical Drawing |
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2400 Gallon Freestanding Water Tank Technical Drawing |
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Specialty Water Tanks, Freestanding Water Tanks, Low Profile Water Tanks, Horizontal Box Water Tanks, Spherical Tanks, Vertical Water Storage Tanks, Storage Tanks, Vertical Bulk Tanks, Polyethylene Tanks, Commercial Series Vertical Tanks, Industrial Series Vertical Tanks, and Tanks from your source for material handling equipment. |
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1,000 Gallon Dark Green HDPE Vertical Water Storage Tank
Water tank square vertical
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