Printing and dyeing waste water recycling and exhaust heat utilizing device

The utility model discloses a printing and dyeing waste water recycling and exhaust heat utilizing device, which comprises a reaction tank, a settling tank and a filter tank communicated with each other sequentially. A heat exchange mechanism is arranged in the settling tank, and the settling tank is provided with a cool water inlet and a warm water outlet. As printing and dyeing waste water and heat energy are recycled by the device, water resources and energy consumption are saved, discharge of waste water is decreased, sewage water treatment cost is reduced, and comprehensive utilization rate of water resources for printing and dyeing processes is increased.