Study on Planning, Utilization and Protection of Emergency Water Source in Danyang City

Abstract

In order to respond to sudden water pollution incidents of surface water sources efficiently and ensure the water demand of industry and living in Danyang City, the location of emergency groundwater sources in Danyang City was confirmed by comparison of schemes. According to the relevant emergency water supply regulations, the forecast analysis determines that the emergency water supply event is assumed to be 7 days and the emergency water supply scale is assumed to be 300,000 m3/d. The demonstration scheme of emergency water source wasput forward. The groundwater level change was analyzed by numerical simulation, and the groundwater quality is evaluated. Results of simulationshow that the pore water in Binjiang area is abundant and can be used as a medium to large water source. The groundwater quality is extremely complex, the shallow groundwater quality is poor, it is not suitable for drinking, and the deep water quality is relatively good. After treatment, it can be used as an emergency water source. Under the condition of emergency exploitation of water source area, the water level of the second aquifer group in the mining funnel area will approach - 20m, forming an obvious water level depression funnel area.