We cannot stop rain from falling, but it is possible to avoid floods caused by heavy rain. When storm water is stored and retained, water is fed into large tanks where it is gradually released by gravity or pumping into the sewer system or a discharge location. The volume of water remains under control, and floods are prevented.
Retention tanks are available in inner diameters ranging from 1000 to 3000mm and the ring stiffness ranging from SN2 to SN8 (PN-EN ISO 9969), which helps adjust the parameters of the tank construction to the specific water and soil conditions of a given project. Tanks can be installed both in dry ground or watered ground. Installation into the ground as well as on the surface is possible since the system is resistant to the UV radiation. Non-pressure retention tanks can be used as underground, overground or partly embedded tanks.
Advantages of tanks:
Double walls and welded joints guarantee 100% leak-free operation and long-term durability
Foundation in difficult soil and water conditions possible
Installation in roads and underneath car parks
Total resistance to corrosion and high resistance to chemicals
Long storage with no loss of parameters (UV resistant)
Low weight, quick and easy assembly (also in winter conditions)
A typical Uponor tank is a single-body structure, but there is a possibility to join tanks into batteries of any capacity. Prefabricated tanks delivered as one component may be of capacity ranging from 2 to 90 m3 (larger capacities are manufactured on demand and transported on individual conditions). The maximum length of the delivered tanks is only restricted by transport limitations.
Large capacity tanks (up to even over a dozen thousand cubic meters) are delivered in sections that are ready to be joined by extrusion welding. Consequently, the final product is a monolithic construction that is free of mechanical joints and guarantees maximum water tightness and reliability. Such a solution enables the installation of large capacity tanks with the optimum use of the available terrain.
Weholite storm water tanks prevent floods
During heavy rain, floods and overloaded pipelines can be avoided using Weholite retention tanks. See Uponor's solution for managing large amounts of storm water.
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