Makeup water treatment system for power plant boiler

The utility model discloses a makeup water treatment system for a power plant boiler. The makeup water treatment system comprises a reverse osmosis pretreatment device, a primary reverse osmosis device, an EDI (Electrodeionization) device, a demineralized water tank and a membrane degassing device, wherein the membrane degassing device is connected with the primary reverse osmosis device, the rear end of the membrane degassing device is connected with an intermediate water tank, and the rear end of the intermediate water tank is connected with a reverse osmosis water pump; the front end of the EDI device is connected with the reverse osmosis water pump, the rear end of the EDI device is connected with the demineralized water tank; the rear end of the reverse osmosis pretreatment device is connected with the primary reverse osmosis device through a pipeline mixer, a security filter and a high-pressure pump in sequence, and the front end of the reverse osmosis pretreatment device is connected with a raw water p