Sheet laminated body, method of manufacturing bag for gas supply body, gas supply body, supply body unit, and wastewater treatment device

摘要

A sheet laminate capable of maintaining the purification performance of a wastewater treatment device. The sheet laminated body 21 is used in a wastewater treatment device that purifies wastewater by utilizing the action of microorganisms in the wastewater. The sheet laminated body 21 includes a base material 211 and a gas-permeable non-porous layer 212, and the base material 211 is a microporous film.