Steel-supported inverted membrane features and advantages. Comparative analysis of the applicability and service life between the traditional waterworks sealing facilities and the steel-supported inverted membrane reveals that the combination of ordinary carbon steel frame (inverted) + membrane structure (PVDF fiber membrane) demonstrates significant superiority in both service life and applicability.

Additionally, through a comparative analysis of the cost-effectiveness between steel-supported inverted membrane structures and traditional waterworks sealing facilities, the sealing facilities of the steel-supported inverted membrane structure have a lifespan of 15 years, with a unit area cost of approximately 600 yuan/m²; whereas traditional sealing facilities generally require replacement 2.5 times within 15 years, with each replacement costing about 500 yuan/m², resulting in a total unit cost of 1250 yuan/m² over 15 years, which is more than double that of the steel-supported inverted membrane structure. In terms of cost-effectiveness, the steel-supported inverted membrane structure also offers a significant advantage.

Introducing the advantages of the steel-supported inverted membrane's detailed design. Firstly, considering the need for light during the wastewater treatment process, the characteristics of the membrane material ensure the facility's transparency. Secondly, the entire facility can be structurally suspended and installed based on the specific conditions of the pond, ensuring the normal operation of the internal equipment. Additionally, to meet the requirements of observation, sampling, and maintenance during the wastewater treatment process, corresponding doors and windows can be set according to actual conditions. All membrane structures on the facades can be cut and hot-melt welded on-site as needed, ensuring good airtightness for the facility and preventing odor leakage.