| 摘要 |
This invention relates to a device suitable for collecting and at least temporarily storing water on a substantially horizontal supporting surface to be at least partly covered by a multi-layer structure (10), the multi-layer structure comprising the following layers: (a) a water-capturing layer (3) comprising a plurality of water storage volumes (7) for receiving and storing water, (b) a filter layer (4) covering the water-capturing layer (3), (c) between the base layer (1) and the water-capturing layer (3), a layer of a water absorbing material (2) to allow positioning of the water-capturing layer (3). At least part of the water storage volumes (7) of the water-capturing layer (3) are dimensioned such that they are capable of containing bulk water (18). The device comprises a water-level detector (8) for the water-capturing layer (3) and discharging water from the multi-layer structure (10) to a second predetermined water-level, towards a water consumption circuit (11) if the water level in the water-capturing layer (3) exceeds a first predetermined value.
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