According to the above simulation results, the LID system was further optimized in combination with the overall site design and the current situation of green space in urban built-up areas. The LID system with infiltration and retention facilities as a base and interspersed with purification and storage facilities were finally constructed (Mo & Yu 2012; Wang et al. 2015; Lin 2018b), then the scale and capacity of each facility were determined (Table 9).
Stormwater management facility scale capacity
| Name of facility . | The average depth (m) . | Quantity (m2) . | Storage capacity (m3) . |
|---|---|---|---|
| Artificial purification wetlands | 0.20 | 3,279.94 | 655.99 |
| Vegetation swale | 0.20 | 7,299.96 | 1,459.99 |
| Bioretention pool | 0.30 | 22,291.29 | 6,687.39 |
| Rain garden | 0.30 | 26,914.84 | 8,074.45 |
| Wetland purification | 0.70 | 26,327.66 | 18,429.36 |
| Reservoir | 1.15 | 23,714.55 | 21,271.73 |
| Total sum | – | 109,828.2 | 62,578.91 |
| Name of facility . | The average depth (m) . | Quantity (m2) . | Storage capacity (m3) . |
|---|---|---|---|
| Artificial purification wetlands | 0.20 | 3,279.94 | 655.99 |
| Vegetation swale | 0.20 | 7,299.96 | 1,459.99 |
| Bioretention pool | 0.30 | 22,291.29 | 6,687.39 |
| Rain garden | 0.30 | 26,914.84 | 8,074.45 |
| Wetland purification | 0.70 | 26,327.66 | 18,429.36 |
| Reservoir | 1.15 | 23,714.55 | 21,271.73 |
| Total sum | – | 109,828.2 | 62,578.91 |