Sponge City Construction Relieves Urban Hunger

Affected by the acceleration of domestic urbanization, the contradiction of urban water shortages has further deteriorated, and environmental and ecological problems have become increasingly evident. In order to solve the problem of water shortages, the environment, and ecology, a series of urban conflicts, people have focused their attention on the collection and utilization of rainwater. This topic is just an important way to effectively solve the problem of water shortage, environment and ecology.

The study of rainwater harvesting and utilization in foreign countries started earlier, and domestic cities began to collect and use rainwater slightly behind. Zhengzhou is moderately warm and warm, with four distinct seasons. It is characterized by dry and rainy springs, hot and rainy summers, sunny and sunny autumn days, cold and rainy winters, and distinctive features of the four seasons. The obvious amount of rainfall makes Zhengzhou not only under water stress, but also facing water and soil erosion and river pollution. And other issues. With the increasing demand for energy-saving and emission-reduction in China, rainwater recycling has gradually become more important. Collecting and utilizing rainwater is in line with China's grand strategy of sustainable development.

The traditional urban rainwater collection method is that after the rainwater falls on the ground, part of it is replenished with groundwater seepage to supplement groundwater, and the rainwater that cannot be infiltrated or has no time to infiltrate into the rainwater inlet through the ground, and is discharged into the river through the collection pipeline or lifted by the pump. Enter the river. However, as the degree of urbanization increases, hardened areas increase, and traditional rainwater management models cannot withstand rainwater intrusion, often causing major problems such as urban flood disasters, rainwater runoff pollution, rain water loss, and destruction of the ecological environment.

The new rainwater collection method is to establish a subsurface rainwater harvesting system by using a module reservoir. The system integrates collection, abandonment of wastewater interception, filtration, and purification and reuse. Interconnecting the system with the rainwater pipeline can quickly collect rainwater that has fallen. Leave a mouth for water intake and post-maintenance. Cover soil and plant green vegetation. Such a reservoir can be combined with civil air defense construction, that is, it meets the construction targets for air defense and increases the investment channels for collecting and using rainwater.