The condensate of 2×300 MW units in Luanhe Power Plant is fully passing through the polishing treatment by using high column separtion technique and ammonex operation.In the debugging process of said units

it was found that a lot of anion resins being mixed up with cation resins as they are transferred through resin separation column

leading to bad effectiveness in regeneration within the mixed bed

and the quality of effluent water can not reach the required standard

being unable to realize the ammonex operation.For this

an approach to said problem has been made

and the feasible solutions being compared

finally

an operation method being adopted as follows:eliminating the upper intaking water of said resin separation column

only maintaining the lower intaking water in service

at the same time

the air valve of said separation column is being opened.After improvement of the operation mode

the phenominon of anion resins mixed up with cation resins has been eradicated

ensuring good regeneration of resins

lengthening the operation period of the mixed bed

improving the quality of effluent water

saving acid and alkali used for regeneration

creating good conditions for safe

high efficient

and ammonex operation of the condensate polishing treatment.