Waste heat power generation boiler supplemental water deionized water equipment with back washing function

The utility model discloses waste heat power generation boiler supplemental water deionized water equipment with the back washing function. The equipment comprises a quartz sand filter, an active carbon filter, a water delivery pump, a primary high pressure pump, a primary reverse osmosis system, a secondary high pressure pump, a secondary reverse osmosis system and a cleaning system, wherein the cleaning system comprises a cleaning tank, a cleaning pump and a cleaning filter which are connected in sequence in the water flow direction. When the cleaning system is operated, the cleaning pump pumps out cleaning fluid in the cleaning tank, the cleaning fluid is respectively fed into the primary reverse osmosis system and the secondary reverse osmosis system after being treated by the cleaning filter, the cleaning fluid flowing out of the primary reverse osmosis system and the secondary reverse osmosis system flows back to the cleaning tank again, and circulating washing is formed, so that the reverse osmosis systems are prevented from forming scale, and the long-term and reliable operation of the system is guaranteed; further the primary reverse osmosis system and the secondary reverse osmosis system can remove the ion range in the water and organics with small molecular weights, and the equipment ensures that a waste heat boiler has good thermal conversion efficiency at long-term operated state.