The organic matters and coloidal silicon content in ground-surface water of southern China is high

making the geltype strong base anion resin adopted in water treatment of thermar power plants in the locality to be polluted in different degrees.Owing to the mechanism of resin pollution is complex

the conventional recovery technology with immersion in alkaline solution is very difficult to effectively recover the original exchange capacity of the used resin.The pollution of 213 anion resin used in Datang Ningde Power Generation Co Ltd has been analysed.It is believed from analysis that the resin is polluted by organic matters

and for this

a recovery test has been carried out.The recovery solution takes salt and alkali as main components

and adding some oxidants

the concrete prescription is as follows:4% NaOH+10% NaCl+1% H2O2.Result of practical application shows that the recovery scheme is correct and reasonable

each index of the polluted old resin after recovery treatment being near to that to the new resin

thereby

lengthening the service life of used resin

enhancing the economic efficiency in operation of power plant.