The influences of dissolved and colloidal substances in aspen alkaline peroxide mechanical pulp (APMP) on the optical,physical,retention and drainage properties of the pulp were investigated.

The dissolved and colloidal substances (DCS) from aspen bleached chemi-thermomechanical pulp (BCTMP) were studied on the physical-chemical properties of DCS water and the effect of system parameters such as pH,temperature,time,and cycle times on the DCS properties.

The dissolved and colloidal substances released during the recycling of Ame.

In the newsprint mills where waste paper is used as fiber raw material, the concentration of dissolved and colloidal substances(DCS) in white water and process water increases gradually with the recycling of white water.

And the accumulating pattern of DCS in the closed white water system has been investigated.

Enzymatic modification of dissolved and colloidal substances;

The dissolved and colloidal substances(DCS)in papermaking with TMP as main furnish contain certain amount of pitch species which can deposite on the surface of equipment,cause papermachine shut down and the quality of paper product decrease.

The effects of dissolved and colloidal substances presented in recirculated white water system of newsprint mills on papermachine runnability and product quality are summarized, and methods of removing the dissolved and colloidal substances from recirculatedwhite water are reviewed.

In this paper the treatments of dissolved and colloidal substances by different enzymes are discussed.

In this paper, some impurities including dissolved and colloidal substances (DCS) of process water in newsprint mill are analyzed and the efficiency of DAF in DCS removal is evaluated.