Patent ID: 11208341

Abstract:
Provided is a sewage treatment device and method for synchronously recovering water and electric energy, belonging to the field of sewage treatment. The method includes the following steps: providing municipal sewage serving as influent water and a sludge and sewage mixed solution serving as a feed solution to enter a feed solution channel of a membrane component through a peristaltic pump, and allowing brine serving as a draw solution to enter a draw solution channel of the membrane component through a high pressure pump; allowing water to flow from the side of the feed solution to the side of the draw solution by means of the osmotic pressure difference between two sides of an FO membrane, and allowing the mixed draw solution with high pressure to push a turbine to rotate in an outflow process, so as to generate electric energy; and allowing the diluted draw solution to pass through a draw solution recovery system to obtain recycled water, and at the same time, allowing the concentrated draw solution to continue to be applied to the FO membrane.