Garden with runoff rainwater graded blocking and utilizing function

Abstract

The invention discloses a garden with a runoff rainwater graded blocking and utilizing function. The garden comprises planting terraced fields, bricked partition walls, overflow openings, a perforated flower pipe, a reuse water tank, a circulating pump, a reuse water pipe and nozzles. The planting terraced fields are partitioned by the bricked partition walls which are provided with the overflow openings. The perforated flower pipe is embedded below the planting terraced fields and finally connected to the reuse water tank. The circulating pump is installed in the reuse water tank. A water outlet pipe of the circulating pump is the reuse water pipe which is led out of the reuse water tank and embedded below the planting terraced fields. Vertical pipes are arranged on the reuse water pipe, extend out of the surface layers of the planting terraced fields and are provided with the nozzles. The rainwater runoff volume can be controlled through a downward seepage effect, underground water is supplemented, initial-stage rainwater is filtered, surface source pollution is controlled to a certain extent, part of rainwater can be collected and reused, and rainwater is recycled.

Description

technical field [0001] The invention belongs to the field of low-impact development, and more specifically relates to a garden with the function of grading interception and utilization of runoff rainwater. technical background [0002] With the acceleration of the development of my country's urbanization level, a large number of hardened and impervious surfaces appear in large areas, and the proportion of permeable areas is getting smaller and smaller. When it rains, the rainwater forms surface runoff, which is then discharged into the storm sewer system and then discharged. This rapid drainage of rainwater has led to an increase in the urban surface runoff coefficient, an increase in surface runoff, a reduction in the infiltration of rainwater and surface water recharge, resulting in a drop in groundwater levels, drying up of wells and springs, drying up of lakes and rivers, and an increase in peak flow. , the time is advanced, and the risk of urban flooding increases. At...

AI Technical Summary

Problems solved by technology

This rapid drainage of rainwater has led to an increase in the urban surface runoff coefficient, an increase in surface runoff, a reduction in the infiltration of rainwater and surface water recharge, resulting in a drop in groundwater levels, drying up of wells and springs, drying up of lakes and rivers, and an increase in peak flow. , the time is advanced, and the risk of urban flooding increases

At the same time, the pollutant load produced by the initial rainwater runoff is much higher than that of urban sewage. After being discharged into the water body, it will also cause serious pollution problems to the water body.

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