对于面源污染严重或水质要求高的地区，应弃除少量高浓度初期雨水，能有效减

For areas with serious non-point source pollution or high water quality requirements, a small amount of high-concentration initial rainwater should be discarded, which can effectively reduce the pollutants in roof runoff [[[] Li Qiang, "Evaluation and Control of Runoff Pollution Reduction Potential in Construction of Sponge City in Residential Communities Technical Research, [D], 2017]]. Discharge the clean rainwater into the green space system for water consumption, collect and store it with rain buckets, and use it for certain areas for green irrigation after a certain treatment.

For areas with serious surface pollution or high water quality requirements, a small amount of high concentration of primary rainwater should be removed, which can effectively reduce pollutants in roof runoff. After the discharge of clean rainwater drainage and green space system for water consumption, with rainwater buckets for collection and storage, for a certain treatment for the use of green irrigation water for the community.

For areas with serious non-point source pollution or high water quality requirements, a small amount of high concentration initial rainwater should be discarded, which can effectively reduce the pollutants in the roof runoff [[] Li Qiang, study on the potential assessment and control technology of runoff pollution reduction in the construction of sponge city in residential communities [D], 2017]. The abandoned clean rainwater is discharged into the green space system for water consumption, collected and stored in rain buckets, and used as the green irrigation water of the community after certain treatment.<br>