Translating…
There are several types of plastic water tank but the two most important differences between these are those that are suitable for holding water that will be used for human consumption, and those that hold water that will not be drunk. The two different varieties are known as ‘potable water storage’ – ie for human consumption, and ‘non-potable water storage’ – not for human consumption. Quite commonly water tanks will be constructed from plastic.
Water tanks that sit above the ground and only store cold water are often be made from plastic because this is lightweight, easy to install and easy to manufacture. A tank of this type have many different uses will often be used when the tank will only be temporary or when portability or easy access is required. Available in sizes up to 10,000 liters, these have been known to supply temporary buildings and cabins with water or be used for farming and fire fighting.
Plastic water tanks will often be made as one large piece, so that no assembly is required. Being lightweight, these are easy to move as well as to manufacture. Despite the obvious convenience of having the unit manufactured in such a way that it will immediately be ready for use, when access to a site is restricted it will sometimes be necessary for the unit to be constructed as multiple parts and put together at the final destination . These ‘sectional tanks’ are put together from panels. The methods of installation will depend upon whether the tank is flanged internally or externally.
When the sections are installed over beams or walls, this is known as an externally flanged base whilst internally flanged base tanks take advantage of a flat supporting base.
One of the more flexible options is the semi-sectional water tank, ideal for use in a rainwater harvesting system . A base unit is placed, and onto this horizontal layers are added. You can continue to add these horizontal layers until the correct capacity is reached.
With rainwater harvesting you may find that both above ground and underground water tanks are used, one for the initial collection and one for storage of water that has undergone filtration. Rainwater harvesting is a cost effective way of reducing your water bill by capturing and making use of rainwater, however plastic water tanks have many other uses and are often found on farms or in use by the fire service.