PVC coating is made of acid and alkali resistance, high temperature, high tensile strength and durable. Mainly used for decontamination of treated wastewater in full bloom. Decontamination wastewater will be treated with automatic sewage pumping wastewater recycling bag to facilitate the processing carried away, and will not let water spread of environmental pollution. I produced a water bag has a closed water decontamination bag, open type storage bags and collapsible decontamination decontamination catchment of three.