March 2015, the state established a sponge Suining city pilot areas, according to a low-carbon, eco-philosophy, first of Suining City Construction has started (sponges city means the city can be like a sponge, in terms of adaptation to environmental change and response to natural disasters It has good flexibility, when it rains water absorption, water storage, water seepage, water, the reservoir is released when water is needed and utilized). On the basis of learn from the advanced concept on Suining to buildings, roads, green spaces and other urban infrastructure as a carrier, breaking the traditional "In row-based" urban stormwater management philosophy, through the "infiltration, stagnation, build, clean, with, row ", and other ecological technology, build urban low-impact development stormwater systems, storage cells and improve the city, the construction of" breathing "sponge cities. Shenzhen Yu Dr. rainwater harvesting Ltd.: manufacturer direct rainwater collection cistern PP module, fully compliant with Chongqing "breathing sponges city" construction standards. Contact QQ: 574580518 (signal: Chongqing community) Tel: 13692278952 Chongqing, Shenzhen, Guangdong mobile number: 15215012604 workers http://zhangw123456.cn.china.cn/ http://www.doctorrain.com.cn/index.html rain It refers to the collection and use of rainwater pipe by aggregating collected by rainwater purification device to purify stormwater treatment, to meet the design using standard. At present, most rainwater harvesting, is intercepting Cradle means abandoning flow filtration equipment, water systems, purification systems. In the present case, has not only by water and groundwater to protect the people's demand for water, and can only make the idea of ??rain. According to statistics, China average river runoff and shallow groundwater resources of about 2.8 trillion cubic meters, an average of 6 trillion cubic meters of rainfall, which is a huge water resources, yet effective use! 5. On rainwater utilization, Chinese scholars have done a lot of research experiments, the scope of coverage to the rural and urban. It should be emphasized that due to the rapid urbanization of rural areas traditionally there have been a lot of hardened ground, increasing the speed of rainwater into the flood, but also affected the normal groundwater seepage back to complement, therefore, should be integrated in the urban and rural areas Under the framework of thinking the collection, storage and use of rainwater problems. We recommend, in the "five" period, in urban and rural areas should establish a complete rainwater reuse system, thus reducing the number of flood disaster losses, save rainwater diversion used to increase the water supply target. The utilization of rainwater is an ancient technology, humans have been using for thousands of years, but in modern times, has a higher level of strategic significance. Essentially, the rain is the source of all shallow groundwater and surface water, and therefore, make good use of rainwater is equivalent to make good use of all water resources. Now many cities, on the one hand, a lot of rain to flow away not only wasted, even a flood, to bring social and economic loss; on the other hand the water shortage, long-distance water diversion and elsewhere have superior extraction of groundwater. This situation is very distressing. Through a combination of rain, fundamentally solve the problem of water shortage city, flood control basin-wide problems and restore rivers, lakes, wetlands, natural landscape and ecological problems, which is a strategic value of the project, worthy of serious study. Through rainwater collection and utilization of groundwater recharge sources, reduce urban peak flow, effective control of pollution of surface water bodies, to improve the ecological environment of the city, to ease the tension of water resources has important practical significance.