Papers # 2016 Berlin
Rainwater can be used not only for washing road and irrigation, but also for flushing toilet, washing clothes and industry use. Moreover, storm water regulation and storage facilities help reducing the burden of drainage piping system, cutting down the investment of storm water pipelines and lowering the possibility of rainfall flood. Therefore, rainwater harvesting technique has great economical benefits, environmental benefits and social benefits.
Chinese central government proposed the concept of “Sponge City” in December 2013, which requires local government to control the quantity of storm water runoff, to cut down flood peak, to reduce nonpoint resource pollution, and to take full advantage of storm water resource during urban planning. Currently, all provinces start putting it into practice actively.
This typical project is in Jiangsu’s energy plant. We collect rainwater from parts of roof surface and road surface. Then after certain treatment, we use rainwater for irrigation in green area, replenishment of waterscape and cooling water during manufacturing process. Furthermore, roof spraying and cooling system is applied in this project in order to lower the environment temperature inside workshops by more than 5 to 8 degrees in summer. Comparing with traditional air-conditioner way, it only takes 7 years to return the full investment