The honeycomb silica sand reservoir is composed of permeable silica sand blocks and filtering silica sand blocks arranged in a "honeycomb" pattern to form a clean water storage pool. It is recommended for use when the primary objective is runoff control. Collected rainwater flows into the clean water storage pool for preservation. The preservation system stores water by simulating the structural principles of groundwater strata, which helps maintain water quality.

The reservoir adopts a honeycomb structure, which not only meets the corresponding indicators of structural stability but also achieves simultaneous filtration and purification. It integrates functions such as anti-seepage, anti-evaporation, breathability, and freshness preservation. Rainwater entering the silica sand reservoir requires pre-treatment, such as pollutant interception and sand sedimentation, before storage. No additional filtration measures are needed after the reservoir. The bottom of the pool is largely free of sediment, making maintenance convenient. A small amount of filtered sediment can be automatically treated periodically through sludge discharge facilities.