Large-sized plastic rockwork artificial hill construction wastewater discharging system and method

The invention discloses a large-sized plastic rockwork artificial hill construction wastewater discharging system and method. The system comprises a group of guniting platforms and a rainwater pipe network, wherein wastewater collection and settling treatment points are arranged at the bottom of a hill body where the system is arranged; one or two wastewater collection vessels are arranged at each wastewater collection and settling treatment point; each wastewater collection vessel is mounted beside or below each guniting platform; a water inlet is formed in the top of each wastewater collection vessel; the water inlets of the wastewater collection vessels located in the front or upper part are connected with the tail ends of water diversion units of the guniting platforms; water discharging holes for mounting of floor drains are formed in the bottoms of the wastewater collection vessels; a filter net is at least arranged at each floor drain; the system further comprises a wastewater collection barrel which i