This utility model discloses a complete separation and
collection system for rainwater and
sewage on a
coal wharf platform. The
coal wharf platform is equipped with a clear
water pool and a
sewage pool below it. A drainage
pipe is pre-embedded along the wheel sill of the platform, connecting to the clear
water pool. The drainage
pipe opening is fitted with an internal plug-type sealing cap, which is normally closed. A
sewage ditch is provided on the platform, connecting to the sewage
pool. A water-blocking
ditch is also installed along the
bank of the sewage
ditch, containing an
inflatable rubber water-blocking bag connected to an
air pump. At the start of rainfall, the rubber water-blocking bag is not inflated, and the drainage
pipe opening is normally closed. Initially, the
coal wastewater flows into the sewage ditch. After 30 minutes, the rubber water-blocking bag is inflated, preventing subsequent rainwater from entering the ditch. Simultaneously, the internal plug-type sealing cap of the drainage pipe opening is opened, allowing subsequent rainwater to flow by gravity into the clear
water pool via the drainage pipe. After the rainfall ends, the cap is closed, and the water-blocking bag is emptied, completing the complete separation and collection of initial coal
wastewater and subsequent clean rainwater at the
wharf.