：This paper inquired into possibility of production of powder active carbon with wheat straw by phosphoric acid method and its optimum process conditions.

The powder active carbon is applied in the air-float technology to enhance its efficiency by playing the role of absorption and providing coordination to flocculent concentration.

The result of experiments conducted in both Harbin and Suifenhe waterplants have confirmed that using powder active carbon is an effective way to remove micro-pollution to make water meet the requirement of water standards in 2000,especiallyto reform old water plants.

Preparation of powdered activated carbon with waste foam polystyrene;

The powdered coal activated carbon was dealt with acid and basis respectively to decrease the ash and the iron content,and its performance was tested .

Effects of dusty active carbon and active zeolite combined application on absorbing NH_4+-N were investigated by the shaker batch experiments,as well as the technical parameters of zeolite in removing NH_4+-N.

A new sodium alizarinsulfonate modified active carbon paste electrode was development for Cu(Ⅱ) determination by means of anodic stripping voltammetry.

Influence of powdered activated carbon on the membrane filtration performance;

Study on treatment of micro-pulluted raw water with powdered activated carbon;

Influence of prechlorination on powdered activated carbon adsorption of 2-MIB from water;