NL1039781C2 - WATERPROOF RESERVOIR FOR THE TEMPORARY STORAGE OF RAIN OR HEAVEN WATER. - Google Patents

Description

Brief indication: water-permeable reservoir for the temporary storage of rain or rain water.

DESCRIPTION

5

The invention relates to a water-permeable reservoir for temporarily storing rain or rain water and delivering the stored water to the surrounding soil.

In the public infrastructure, various systems are used to collect rain or rainwater and then drain it via the sewer to the WWTP (sewage treatment plant) or to open water.

Due to the ongoing urbanization, there is less and less room for rainwater to flow back into the soil in a natural way. The capacity of the sewer in urban areas is often too limited to be able to accommodate the increase in the amount of water. The intensity of the showers is increasing due to climate changes. A so-called peak shower occurs more often. Nuisance with all the adverse consequences that ensues where the capacity of the sewer is insufficient. Common solutions include extending the sewer, collecting water in a storage pond, and accepting flooding. Due to the increasing withdrawal of groundwater from the soil, the soil dries out and the groundwater level drops.

Expansion of the sewer is by no means always an option due to the high investment costs and the long construction time. The period from planning to actual realization and commissioning of the sewer often takes several years.

In urban areas the pressure on the destination of the available space is great. 25 Making space available for water storage ponds is often not an option, simply because the required space is not available.

Draining rainwater through the sewer to the sewage treatment plant is not considered desirable. Moreover, the removal of clean rainwater to the sewage treatment plant means an attack on the capacity of the sewage treatment plant. Purifying relatively clean water is not the water on which the bacterial environment of the sewage treatment plant is set up.

1 03 9781 2

The invention is therefore based on the task of creating a water storage that does not take up any space and in which the clean rainwater flows back into the soil without high costs and a long construction time.

This object is solved according to the invention in that the reservoir is located entirely below ground - under the roadway, cycle path, parking space - wherein the reservoir is deliberately permeable to water to realize the desired delivery of water to the surrounding soil.

The use of a water-permeable water storage reservoir eliminates the above-mentioned drawbacks, in particular the negative effects of flooding: the unprofitable use of space of retention ponds, the investment costs and the long construction time for the expansion of the sewer.

Collecting the falling rain or rain water is relatively easy with the invention because it will be clear that the amount of water to be stored can be increased by adjusting the dimensions - length - width - depth of the reservoir.

In an embodiment of the reservoir according to the invention, the reservoir is built up of material that can retain liquid to a high degree and that has sufficient carrying capacity for carrying the roadway and the load exerted on it during use. The size of the reservoir to be installed is tailored to the needs on site.

In a fairly simple embodiment of the invention, the reservoir is in the form of a container, the bottom of which is liquid-tight and the walls are water-permeable, the container preferably being filled with lost formwork material, for example consisting of: dome-shaped carrier modules placed on a base and a support column such as PVC. To provide sufficient stability, the lost formwork material is filled with, for example, concrete. The lost formwork material filled with concrete provides an even support for the upper deck, consisting of, for example, a ground deck with the roadway, cycle path, parking space on top. The walls of the reservoir are formed by using concrete retaining walls. Such walls are supplied prefabricated, which results in a saving of construction time of a few weeks. The wall elements are placed 20 cm apart.

3

In order to ensure that water is delivered to the surrounding environment effectively, filters are placed in the created spaces between the wall elements. The filters are placed in such a way that they can be removed, either for cleaning or for replacement. The filters preferably consist of sand-tight water-permeable plates 5 encased in a water-permeable sand-tight cloth.

Uniform distribution of the outgoing rain water to the surrounding environment is achieved by coating the outside of the walls with cavity-shaped drain plates - using the principle of the communicating vessels.

The reservoir can be of compartmentalised design, wherein a first compartment is arranged for storing water - suitable for reuse - and a second compartment is designed as a water-permeable unit whereby the water can flow back into the soil through the provisions made.

From the reservoir, the rainwater flows through the filter and distributes itself evenly over the outer circumference of the water-permeable reservoir. The water then seeps into the surrounding soil.

The invention provides a technically, economically and environmentally sustainable and well-functioning solution to effectively prevent flooding caused by excessive rainfall.

The invention will be explained in more detail below with reference to a preferred exemplary embodiment.

Figure 1 shows diagrammatically a front view, in section, of a water-permeable reservoir with a support structure built up of carriers and the filters on the outer circumference according to the present invention.

Figure 2 schematically shows a top view, in section, of the removable filter according to the present invention.

Figure 3 schematically shows a front view of the removable filter according to the present invention.

Figure 1 shows schematically a cross-section of a water-permeable reservoir with 30 retaining wall 1 of concrete as side wall, concrete 2 provided with reinforcement 3 forms the subfloor. The reservoir is filled with lost formwork material consisting of feet 4 provided with vent holes, with pillars 5 placed therein on which 4 dome-shaped modules 6 rest. The dome-shaped modules 6 and the pillars 5 are filled with concrete 2. On the dome-shaped modules 6, the concrete covering layer 2 is provided with reinforcement 3, placed on spacers 7. The concrete offers an excellent bearing capacity for carrying layers that are located on the bearing surface 5. This makes it possible, for example, to position a parking space or a roadway above the water-permeable reservoir.

Figure 2 schematically shows a top view, in section, of the water-permeable construction according to the present invention. The concrete retaining walls 20 are placed 20 cm apart, between them is the removable filter 21. The removable filter 21 is encased in a water-permeable sand-tight cloth 22. Hollow grid-shaped drain plates 23 are placed on the outside of the concrete retaining wall 20, which ensure a even distribution of the outgoing water on the outside of the reservoir. Water-permeable sand-tight drain plates 24 serve to release the water to the soil and to prevent clogging of the filter by soil particles 15. A loop 25 on the front of the filter serves for easy removal of the filter.

Figure 3 schematically shows a front view of the removable filter. A loop 30 consisting of a water-permeable sand-tight cloth is located at the front of the filter. The loop serves for easy removal of the filter from the water-permeable reservoir in order to be able to clean or replace the filter.

Although a preferred embodiment of the lost casing material has been shown as filling material in a reservoir according to the invention, it is possible for those skilled in the art to make further improvements and / or modifications to the casing material which fall within the scope of the invention.

Although a preferred embodiment of the filter and the hollow grid-shaped drain plates has been shown as the water outlet according to the invention, it is possible for those skilled in the art to make further improvements and / or modifications to the water outlet which fall within the scope of the invention.

1 03 97 81

Claims (13)

A reservoir according to claim 1, characterized in that the reservoir is located entirely underground. A reservoir according to claim 2, characterized in that the reservoir is made of material that can store liquid to a high degree and has sufficient carrying capacity for carrying the roadway and the load exerted on it during use. A reservoir according to any one or more of the preceding claims, characterized in that the reservoir is in the form of a tray, the bottom of which is liquid-tight, the tray being filled with lost formwork material. Reservoir according to one or more of the preceding claims, characterized in that the bearing surface is made of concrete. 6. Reservoir as claimed in one or more of the foregoing claims, characterized in that the trough is excavated and the walls are covered with hollow grid-shaped drain plates for the controlled discharge of the water. A reservoir according to one or more of the preceding claims, characterized in that the reservoir is adapted to store at least 500 m3 of rain water. A reservoir according to claims, characterized in that, due to the nature of the construction, the reservoir can be expanded to an unlimited content. 9. A reservoir according to the preceding claims, characterized in that, due to the nature of the structure, the reservoir can take any desired form. 10. Reservoir according to 1 or more of the preceding claims, characterized in that the reservoir can be divided into compartments. II. A reservoir according to the preceding claims, characterized in that the side walls are spaced apart; A reservoir according to the preceding claims, characterized in that the liquid delivery takes place uniformly on the outside of the reservoir. A reservoir according to 1 or more of the preceding claims, characterized in that the outflowing water is passed through a filter. 1 03 9781 A reservoir according to the preceding claim, characterized in that the filter is removable and can be cleaned. A reservoir according to one or more of the preceding claims, characterized in that the outside of the reservoir is provided with sand-tight plates to prevent clogging of the filter. 1 03 9781