The concept of the sponge city is in December 2013. General Secretary Xi Jinping proposed at the central urbanization work conference to "build a sponge city with natural accumulation, natural penetration and natural purification"
So how to build a sponge city? In November 2014, the Ministry of Housing and Urban-Rural Development issued the "Sponge City Construction Skills Raiders", which stated that the sponge city should follow the six-character policy of "infiltration, stagnation, storage, cleanliness, use, and exhaustion. The "Sponge City Construction Skills Raiders" issued by the Ministry of Housing and Urban Development pointed out a clear direction for us, but we must deal with the technical problems encountered in the construction of sponge cities.
The Ministry of Housing and Urban-Rural Development has issued the "Sponge City Construction Skills Raiders", which proposes a six-character policy of "seepage, stagnation, storage, net, use, and discharge." "Six, one row", the two naturally fit.
Today, the editor first discussed with us the "receiving" link in the six in one. The so-called "collection" is actually collecting rainwater in the sponge city, and collecting rainwater in the season when the rain is full. When the water is scarce, the collected rainwater will be released for utilization, but there are many problems in the process of collecting rainwater: 1: How can rainwater on the road be better collected? 2: How can clean rainwater be collected? Because we know when From the rain to the ground in the future, the garbage on the ground will pollute the rain. For example: oil, impurities, packaging bags, etc.
Aiming at the problem of collecting rainwater on the road, the traditional method is to collect rainwater by using manhole covers and rainwater rafters. However, the traditional method of collecting rainwater has a life-threatening problem: "point drainage". In the event of extreme rainstorms, drainage is not timely and very timely. It is easy for water to accumulate on the road. However, if Wanxin permeable bricks can be used to form the entire sidewalk into a permeable pavement so that the entire sidewalk has the function of water permeability, this will change the traditional "point drainage" into a modern "surface drainage". Greatly increased the drainage speed and relieved the pressure of standing water on the road.
Aiming at 2: How to collect clean rainwater, filtering is touched here. The same treatment method is still using Wanxin permeable bricks . Wanxin permeable bricks not only have fast water permeable function, but also have water filtering function. Why? This has to start from the microstructure of Wanxin permeable bricks . The appearance of Wanxin permeable bricks is micron-sized pores, and it is difficult for ordinary dust to block them. This guarantees the blocking prevention and water filtering function of Wanxin permeable bricks . However, it is not enough to have the function of filtering water. It is also necessary to ensure that the rainwater can quickly penetrate the ground. Wanxin permeable bricks are not simply permeable to water through the pores, but to penetrate the water by destroying the interfacial tension of the water, which can accelerate the penetration of rainwater. Avoid road water issues.Summary: Sponge city construction is a systematic project, but systemic engineering requires every key component to be organically combined. The permeable brick is a vital organism for sponge city construction. With the help of permeable bricks , the useful collection of the first step can be completed, the pressure for rainwater treatment in the next step can be reduced, and the entire sponge city can be constructed