Encofrado perdido para depósitos Atlantis Tank

17 Example: hydrogeological risk in Italy Recent regulations regarding water protection place an emphasis on the need to create accumulation and dispersion tanks in order to avert the danger of fl oods, without considering that the topic of the sustainable transformation of the territory is slowly growing in importance. Thanks to the Atlantis System, rainwater collection tanks, dispersion tanks and water recirculation greenhouses can be created. This restores the ground's draining ability that was taken away by the concrete, without any visual or environmental impact. Consequences The consequences of these concurrent events lead to a considerable alteration in the water cycle: • due to greater waterproofi ng and higher speed of the surface outfl ows, when raining, the water fl ow rates towards the receivers increase, increasing fl oods and overloading the sewer system and purifi cation systems; • due to reduced infi ltration of meteoric water in the subsoil, a lower water bed level has been measured; • the quality of the meteoric water that fl ows through urban areas becomes polluted; • waste of drinking water. Solution This problem can be solved with rainwater collection tanks, which are systems that collect the rainfall peaks, permitting the sewer and water treatment systems to work at the most constant rate possible, with certain economic and operating efficiency benefits even in peak load situations. The excessive dilution of liquids in water treatment systems has a very negative impact on effi ciency, which can be remedied by progressively disposing of the surplus water after an intense rainfall. Similarly, for sewer systems a sudden increase in the volume of water to be disposed of can seriously disturb the operation of a system that is correctly sized under normal operating conditions. In this sense, the tanks represent an economic solution that can be implemented in a brief period of time for adjusting a sewer system to the increasing operative needs that derive from expanding urban areas. In addition to these advantages, underground meteoric water collection tanks, without any limit on vehicle access, make it possible to store the water and then reuse it later. Water evaporation forms clouds The rain falls from the clouds The rivers pour into the oceans The water tanks in ground above sea level fi ll up The groundwater returns to the ocean The progressive extension of areas covered with asphalt/ concrete due to a constant growth of settlement density (almost doubled over the past 50 years), causes considerable changes to the water's surface and underground system and its qualitative characteristics. To this is added a climatic variation due to an increase in temperature that, even if only a few degrees, changes traditional weather patterns. The most visible effect is a tropicalisation of the climate, even in temperate areas, resulting in more violent and intense rainfall, followed by increasingly extended dry periods. Even if the quantity of rain varies little in absolute terms, the effect of this climatic trend is that the same quantity of rain falls in very concentrated periods of time. In fact, there is an increasing amount of floods and landslides connected directly to the increasing hydrogeological risk. Floods such as in Piedmont (1994), Versilia (1996), Sarno (1998), Calabria and Piedmont (2000), up to the most recent in Valboite (BL), Messina and the shocking landslide in Vibo Valentia must not only be managed as emergencies but must be solved with programmed development operations targeted for the territory by the competent authorities. However, unfortunately, from the Galli law from 1994 to the water regulation of 2000 and development projects by water basin authorities, much has been done on paper, whereas in concrete terms the hydrogeological risk remains. www.baygar.com