FIELD: heat-power engineering. SUBSTANCE: apparatus has vacuum deaerator provided with influent water pipeline and connected via vapor pipe with gas discharge unit. Auxiliary gas discharge unit is connected to vapor pipe of vacuum deaerator, with main gas discharge unit being rated to provide for 60-70% of apparatus capacity and auxiliary gas discharge unit - remaining 30-40% of apparatus capacity. Water-jet ejectors are employed as main and auxiliary gas discharge units. Main water-jet ejector is connected via working water pipeline to influent water pipeline. Main and auxiliary ejectors are connected via process water pipelines to gas separating tank. Pump is connected via its suction branch pipe to gas separating tank. Pump pressure branch pipe is connected to working water pipeline of auxiliary ejector and to vacuum deaerator. Apparatus of such construction may be used in heat electric stations and boiler rooms. EFFECT: increased efficiency and reduced costs of makeup water treatment process. 2 cl, 1 dwg
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