Sandbags for flood protection and water purification

The sustainable water purification and flood control sandbag uses a high-density sponge material inside to quickly inhale the floodwater in, and at the same time, the polluted floodwater will be purified by the sewage purifier under the sandbag. Finally, the polluted flood water will be converted into a clean and hygienic drinking water source. This design effectively solves the problems of slow water absorption, low drainage efficiency, and difficult transportation of traditional sandbags, prov