Rainwater collection At present, our country vigorously advocates the construction of sponge cities, which has to mention a new type of geotechnical material - PP water storage module, also called rainwater collection module. 
Advantages of water storage module:
First, the water storage module is a new type of product that can be used to store water but does not occupy space, which plays a significant role in urban flood control and the improvement of the ecological environment, and second, the module is generally 100% high-quality recycled PP polypropylene. It has no precipitates and no peculiar smell when immersed in water. Super strong resistance to strong acids and strong alkalinity. It has super pressure capacity, and the pressure can reach 70 tons.
3. Strong water storage capacity, 95% of the hollow space can achieve more efficient water storage and maximize water storage efficiency.
Fourth, the service life is long, with a service life of more than 40 years.
Fifth, it saves costs, can be installed quickly, saves time, and does not require post-maintenance to improve the construction period.
Water Storage Module Installation:
The installation is relatively simple. After determining the water storage, the module system is determined according to 105% of the water storage, in terms of excavation, if the water storage is considered, it is necessary to wrap the waterproof material around the module system, and at the same time backfill the soft soil around it, the width of the fill is at least 50cm, the upper layer of the module system needs to add geotextiles, and then cover the soil, and the thickness of the covering soil is 30-90cmTubing needs to be reserved in advance. If rainwater is planned to penetrate into the soil, the modular system can be encased with a permeable geotextile layer that prevents sand and other waste from entering the modular system, but at the same time allows rainwater to penetrate into the soil.
The water storage module should be equipped with the side plate of the module, the connector, the positioning is slightly, and the composite membrane is used to form a rainwater collection whole. Including roof rainwater collection system, rainwater interception and infiltration system, and ecological community rainwater utilization system.