DISTILLATION-OXIDATION TREATMENT SYSTEM AND METHOD FOR WASTE LIQUID FROM ORGANIC ACID CHEMICAL CLEANING OF POWER STATION BOILER

Disclosed in the present application are a distillation-oxidation treatment system and method for waste liquid from organic acid chemical cleaning of a power station boiler. The system comprises a distillation system, a crystallization system and an oxidation system, wherein the distillation system comprises a waste liquid conveying pump, waste liquid enters a flash tank via the waste liquid conveying pump and a heater, a vapor phase outlet of the flash tank is connected to a distillate collecting tank via a condenser, and a liquid phase outlet is connected to an inlet of the heater via a concentrated solution conveying pump; the oxidation system comprises an aeration device, a liquid outlet of the aeration device is connected to an advanced oxidation reactor, and a liquid outlet of the advanced oxidation reactor is connected to an effluent collecting tank; and the crystallization system comprises a crystallization separator, the concentrated solution conveying pump is connected to the crystallization separat