Research on low impact development construction scheme of artificial islands
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Abstract:
In order to study the effects of low impact development ( LID) design on runoff pollution reduction and the effects of increasing rainwater infiltration by LID facilities on soil desalination in artificial island area, we designed LID configurations for different goals using the rainfall-runoff management model - SWMM. We investigated the runoff pollution reduction effect using the water quality model in SWMM. The salt suppression effect in the model was evaluated in terms of the relationship between infiltration amount and shallow water table. The results showed that the LID facilities have a significant impact on pollution reduction. Green roof performs well in reducing runoff pollution from the roofs. Ecological grass swale has a good effect on reducing the road runoff pollution. Permeable pavement is the best at increasing rainwater infiltration and reducing soil salinity. Rainwater tank with off-peak drainage function has a good infiltration effect. This paper provides a decision-making basis for planning the use of LID for water resources management on artificial islands.
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