Research Progress of Initial Urban Stormwater Runoff Control Technology
The control of urban initial stormwater runoff can improve stormwater quality,reduce urban non-point source pollution,and improve rainwater resource utilization,which is of great significance to water environment protection,urban stormwater management and sustainable development.There is a gap between China and western developed countries in the formulation of policies,regulations,standards,technical research and application of ini-tial stormwater runoff control.Technologies such as source reduction,transmission process control and terminal treatment can improve the initial stormwater quality and control stormwater runoff pollution,but further research is needed.In order to better control the initial stormwater runoff,three suggestions are put forward:① the evalua-tion system of early rainwater runoff control should be improved and practical policies,regulations and standards are formulated;② a reasonable whole-process management system for initial stormwater runoff from source to transmission to terminal is formed;③ the appropriate initial stormwater runoff control technology or the combi-nation of multiple technologies should be selected in engineering practice.
initial stormwater runoffcontrol technologysource reductiontransmission process controlterminal treatment