Purification treatment method of reclaimed papermaking water

The invention relates to a purification treatment method of reclaimed papermaking water, which comprises the steps of filtration, sand setting, flocculation and sedimentation and separation and reuse. The invention is characterized in that before adding flocculating agents into reclaimed water to be treated for flocculation and sedimentation, the flocculating agents which account for 70 to 90 weight percent of the total consumption carry out desalted treatment. When the method of the invention is adopted, the waste papermaking water with high salt content can be treated at the low cost, and in addition, satisfactory results can be obtained.