Xuzhou Yongcheng Environmental Engineering Equipment Co., Ltd.

Introduction to the rainwater recycling and utilization system of Xuzhou Yongcheng Environmental Engineering Equipment Co., Ltd.) The rainwater recycling system is divided into two sets of rainwater pipes set up outdoors, one is a rainwater collection and reuse pipe, and the other is a rainwater collection and discharge pipe. After the rainwater on the roof is collected by the rainwater pipe, it is discharged to the outdoor rainwater collection and reuse pipe. After the initial rainwater is discarded through the outdoor initial rainwater disposal well, it enters the rainwater collection module pool for storage and reuse. The initial rainwater discarded by the rainwater collection and reuse system and the overflow rainwater that exceeds the capacity of the rainwater collection system are collected by the outdoor rainwater collection and drainage pipes, and finally discharged into the municipal rainwater pipes. This project collects rainwater from the roof, with a catchment area of about 3/3. The rainwater collection and utilization process strives to be simple in principle. On the one hand, the quality of rainwater is relatively clean. On the other hand, rainfall is unpredictable, the recycled water source is unstable, and the treatment facilities are often idle. .3 Runoff rainwater from the initial rainwater abandonment collection surface often shows an initial flushing effect. The concentration of pollutants in the initial runoff rainwater is high and the water quality is turbid. As the rainfall continues, once the flushing effect is completed, the water quality of the runoff rainwater will be significantly improved. For the collection and utilization system, discarding the initially seriously polluted runoff rainwater during rainwater collection can greatly reduce the burden on subsequent treatment structures, save investment, and reduce operating costs. For collection and discharge systems, discarding rainwater in the early stages can eliminate non-point source pollution and reduce harm to the environment. ) The initial runoff flow rate should be determined based on the measured concentration of rainwater collected on the underlying surface, such as color, color, and other pollutant concentrations. When there is no data, the roof abandonment can use ~3 runoff thickness, and the ground drainage can use 3~runoff thickness) Initial drainage device requirements of the rainwater collection and utilization system: Intelligent flow meter has cumulative flow measurement, signal conversion and remote transmission functions , and can open the electric valve at the set reset time to reset the initial rainwater abandonment device. The drainage structure is composed of a dry room and a wet room. The drainage device is installed in the dry room. 3) Roads and squares use rainwater outlets integrated with seepage and drainage to complete the initial drainage of rainwater. The material of the rainwater outlets with integrated seepage and drainage is low-density polyethylene. Material, the rainwater outlet is equipped with a finished waste intercepting frame. The color of the rainwater outlet matches the green space. Pressure load ≥. Rainwater storage) Storage and reuse scale: The effective water storage volume of rainwater storage facilities should not be less than the total daily rainwater design runoff of the catchment surface return period ~ year, deducting the design initial waste flow. Referring to the regulations of surrounding cities (Shenzhen), the designed daily rainfall amount used for rainwater collection and utilization is 3/). The designed daily rainwater collection and utilization amount of the water collecting surface is 3/). Storage method. This project uses prefabricated rainwater modules as rainwater collection tanks. The rainwater module material is polypropylene. Plastic, the outside of the module is wrapped with impermeable geotextile to retain water. Compared with reinforced concrete pools, rainwater module water storage is easier to install, the construction period is greatly shortened, and the water storage module can also be recycled) Maintenance of rainwater modules Before entering the rainwater module collection system, a pipe grille is installed at the entrance of the rainwater pipe. The sedimentation well of the flow well removes impurities such as large solids and leaves. Since rainwater stays in the storage tank of the rainwater module for a long time, water suspended matter is bound to be deposited at the bottom of the module. If not processed in time, it will not only affect the water storage space, but also It will also become a breeding ground for microorganisms. .Rainwater treatment process The principle of rainwater treatment process is to strive for simplicity. On the one hand, the quality of rainwater is relatively clean. On the other hand, rainfall is random, the recycled water source is unstable, and the treatment facilities are often idle. Since the main pollutants in rainwater reuse are water and water, the rainwater after the initial waste flow has sufficient time to complete the precipitation in the water storage module pool. The precipitated rainwater can fully meet the return water quality standards after simple disinfection, and generally does not require Do in-depth treatment. This project uses chlorine tablets as disinfectants and adds them manually. The amount of chlorine added is ~/. Rainwater collection and utilization technology is an important part of water-saving and energy-saving technology. At present, the scale of urbanization in our country has entered a stage of rapid development, which will inevitably lead to more land being turned into construction land. It is necessary to consider the actual situation, make overall plans and make multiple design plans, conduct technical and economic comparisons, and finally choose a better plan for construction to minimize construction costs. And the reuse of rainwater should be accomplished with government support and mass participation. In short, there is still a lot of work to be done to promote the sustainable development of water resources, and there is a long way to go!