Processing system and method for courtyard ground rainwater collection in arid region

Abstract

A processing system for courtyard ground rainwater collection in an arid region comprises a ground rainwater collection port, a ground rainwater collection pipe, a ground primary rainwater collection tank, a clean rainwater collection tank, a coagulative precipitation tank and a filtration tank, wherein the coagulative precipitation tank and a filtration tank are arranged on the ground; the ground primary rainwater collection tank and the clean rainwater collection tank are arranged under the ground; and the upper ends of the ground primary rainwater collection tank and the clean rainwater collection tank are upwardly protruded from the ground. Primary severely-polluted rainwater and middle-later clean rainwater can be separated; primary rainwater with great pollutant contents can be sealed in the primary rainwater tank and used for irrigating green plants and spraying roads; and the middle-later rainwater can be further processed and manufactured into drinking water.

Description

technical field [0001] The invention belongs to the technical field of rainwater utilization, and in particular relates to a system and method for collecting and treating rainwater on a courtyard ground in an arid area. Background technique [0002] Drinking water is the source of life and the foundation of survival. In many remote water-scarce regions around the world, rainwater is the main source of drinking water for local residents. Taking my country as an example, in some remote areas such as the northwest of our country, affected by the level of social and economic development and the lack of water resources, rainwater has become the source of drinking water for local residents, and projects such as rainwater cellars and storage ponds are used to collect rainwater The main facilities, such as the "121 Rainwater Harvesting Project" in Gansu, the "Kiln Agriculture" in the southern mountainous area of ​​Ningxia, and the "112 Rainwater Harvesting and Water-Saving Irrigatio...

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Problems solved by technology

[0003] However, existing studies have shown that for a rainfall, the first few millimeters of rainwater runoff are most polluted, and almost all the pollutants carried in the runoff are concentrated, which may contain organic matter, nitrogen and phosphorus, pathogens, heavy metals, and oils , suspended solids and other pollutants

Before the rainwater enters the rainwater cellar, it only undergoes simple sedimentation treatment, which can only remove suspended solids such as sediment, but the removal effect of dissolved pollutants in it is poor, resulting in poor quality of collected rainwater, which will harm the drinkers. harm to the health of

At the same time, the existing norms and actual projects often only focus on the collection of rainwater, but ignore the treatment of rainwater. Even if the method of collecting rainwater by quality is adopted, the clean rainwater still inevitably contains pollutants. Only by effectively removing them pollutants in order to obtain qualified drinking water and ensure the safety of water users

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