Method and device for collecting rainwater in sunken green land in coastal area

• Main Authors: LIU YIXIANG, LIU FUHAI, LIU JIANQIANG, LI ZEXU, XU YUHAI, WANG YUXIANG, LIU RUIJUN
• Format: Patent
• Language: Chinese; English
• Published: 02.09.2022
• Subjects: CESSPOOLS; FIXED CONSTRUCTIONS; SEWERAGE; SEWERS; WATER SUPPLY

The invention belongs to the technical field of sponge cities, and particularly relates to a method and a device for collecting rainwater in a sunken green land in a coastal area. Rainwater is collected to be connected with a greenbelt salt discharging system pipe network, and the rainwater is used for saline-alkali soil heavy water salt washing or directly used for community greenbelt irrigation, so that fresh water resources are reduced, the sponge city construction requirements are met, and the principles of real natural accumulation, natural permeation and natural utilization of sponge city construction are embodied; rainwater is collected and connected with a greenbelt water storage and guide system pipe network, rainwater is utilized to replace greening fresh water for irrigation to the maximum extent, and the greenbelt maintenance cost is reduced; the first-stage water guide pipe and the second-stage water guide pipe are used for guiding rainwater to the position 30 cm below green land soil, the depth