Rainwater Collection And Drainage System
Rainwater Harvesting Applications
The research and application of urban rainwater resource utilization in my country began in the late 1980s. At that time, facing the increasingly tense urban water supply situation, individual cities in China began to consider the collection and utilization of rainwater resources, and tried to use rainwater resources in some buildings. However, due to the lack of a supporting rainwater treatment and reuse system, the actual utilization effect is not large.
Since the beginning of the 21st century, the process of urban rainwater resource utilization in my country has been significantly accelerated, and the technical level has also been rapidly improved. In 2001, the State Council approved the "Plan for the Sustainable Utilization of Water Resources in the Capital in the Early 21st Century", which included the planning of rainwater utilization, which promoted Beijing's urban rainwater resource utilization to be at the forefront of the country.
Collect rainwater and use it for land infiltration to supplement groundwater, urban greening, road flushing, firefighting, car washing, toilet flushing, laundry and other living purposes after simple treatment, which can not only reduce the risk of urban rainwater and flood, and reduce urban drainage. and river flooding pressure, and can alleviate the crisis of urban water shortage.
Current Situation and Prospects of Rainwater Collection
In order to alleviate urban waterlogging and build a green city, President Xi proposed to build a sponge city, and various regions in China have also introduced relevant policies to promote the construction of sponge cities.
With the confirmation of the two rounds of sponge city pilots in 2015 and 2016, the construction of sponge cities has ushered in a wave of upsurge, and the frequent occurrence of waterlogging crises will also give rise to urgent needs for the construction of sponge cities. The policies and pilot projects continue to exceed expectations, reflecting the firm attitude at the national level. It is expected that a wave of investment boom in sponge cities will break out.
Tool overview
The plastic module combined pool is a combination of polypropylene plastic unit modules to form an underground storage pool, which is wrapped around the pool according to the needs of the project. . The modular storage tank is easy to install, has a large bearing capacity, and does not breed mosquitoes, flies and algae. After being used in the temporary construction area, it can be dismantled and moved to other areas for continued use. This equipment is suitable for rainwater collection and utilization in large building districts, industrial parks, squares and workshop areas.
The system consists of finished rainwater equipment room, high-efficiency filtration system, dosing system, backwash system and ultraviolet sterilizer. The water outlet is integrated with an ultraviolet sterilizer; the sterilizer uses a high-efficiency UV-C (LL or LH) ultraviolet lamp, and selects a high transmittance, high-purity quartz sleeve to ensure that the ultraviolet transmittance is above 90%.
It is a rainwater pretreatment device, which mainly separates the sediment and other sundries in the rainwater by swirling flow. The purification process is all water-heavy and requires no external force. Generally, it can be applied to the small municipal administration before entering the large municipal administration, the end of the pipe network or the front end of the reservoir. The later maintenance is simple and the cost is low.