Method and device for collecting rainwater

Abstract

The invention discloses a method for collecting rainwater. The method comprises the following steps that: a rain dropping pipe guides rainwater on a roof to a scattering ditch, the rainwater passes through a collection pipe network and enters a sunken green land, and the rainwater on a hardened land and a road surface is guided to the sunken green land; a seepage layer is arranged below the sunken green land and a green land, and a seepage pipe network is arranged in the middle of the seepage layer and connected with an impounding reservoir; the rainwater flows through the soil layer and the seepage layer and supplements the underground water; when the underground water level ascends due to rainfall, the rainwater flows through the seepage pipe network, enters the impounding reservoir and is used; and the water in the impounding reservoir can be fed into a water pipe network in a city. The invention also discloses a device for collecting the rainwater. The rain dropping pipe is arranged on a house and connected to the scattering ditch; the scattering ditch is connected to the collection pipe network; the collection pipe network is connected to the sunken green land; sewers are arranged on the hardened land, the green land and the road surface and connected with the sunken green land; the seepage layer is arranged below the soil layer below the sunken green land and the green land; and the seepage pipe network is arranged between the seepage layer and connected with the impounding reservoir. The device is rationally designed, and the method is simple; the number of targets is large; the use and maintenance costs are low; and the service life is long.

Description

technical field [0001] The invention relates to a method and a device for collecting and utilizing urban rainwater, in particular to a method and a device for collecting rainwater. Background technique [0002] In the past, in urban construction, the hazards of floods caused by rainwater were mostly considered solely, and ditches were mainly used to drain rainwater in time, and a large amount of god-given water was discharged into ditches and rivers. With the rapid development of the world economy and the rapid expansion of population, the problem of water shortage will pose a threat to the whole world. The shortage of water resources is a huge challenge facing the world in the future. Although my country's water resources rank 6th, the per capita water resources are only 2400-2500m3, which is less than 1 / 4 of the world's average level, and the average water volume of cultivated land is only 4 / 5 of the world's average level. , The distribution of water resources is uneven, ...

AI Technical Summary

Problems solved by technology

The purpose of these measures is single. The purpose of the rainwater collection and storage system is only to collect and store, without considering the problem of rainwater infiltration into the ground to conserve groundwater, and the collected rainwater is dirty and cannot be used directly. It needs to be specially filtered, which will increase the cost.

The method of using permeable ground can only play a role in replenishing groundwater. When the local groundwater is saturated, it will cause waterlogging and cannot be recycled.

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