Boiler feed water treatment system high in water yield

The invention discloses a boiler feed water treatment system high in water yield, and belongs to the technical field of water treatment. The boiler feed water treatment system comprises a lifting pump, a multi-medium filter, an ultrafiltration water inlet tank, a pressurization pump, a security filter, an ultrafiltration device, an ultrafiltration water production tank, a first-stage high-pressure pump, a first-stage reverse osmosis device, a first-stage reverse osmosis water production tank, a second-stage high-pressure pump, a second-stage reverse osmosis device, a second-stage reverse osmosis water production tank, a continuous electrodeionization device, a boiler water feed tank, an electrodialysis device and a water feed pump. The system has the advantages of being simple in structure, convenient to operate, high in water yield, long in service life, good in economic benefits and the like. Process water drainage can be used for plant desulfuration, dust restraining, slag flushing and the like, and nearly zero release is achieved for the system.