On the basis of systematical research on filter-aid performance of polyacrylamide,to enhance the effect of dewatering of micro-fine coal by filtration,this paper presents a two steps flocculation(shear flocculation and high molecular flocculation) technology based on the surface force effection.

At present,the cationic high polymer flocculants,as the key products,have received concern extensively.

The inorganic high polymer flocculant polymerization chlorinates the ferro-aluminum(PAFC) was synthesized under the strong sulfuric acid function,with taking the trioxide two aluminum and the ferric oxide as a raw material.

The initiation systems,relative molecular mass,etc of two foreign polymeric flocculants were analyzed by IR,NMR,X-ray energy spectrum etc.

As an important link of sludge treatment system in waterworks,the polymeric flocculant dosage process can not meet the demands of the system in Huyan Watertreatment Factory.

Red mud generated from Chinese diaspore bauxite has a poor settling performance, so that red mud settlement requires excellent polymeric flocculants.

Research development of cationic polymer flocculants

This paper reviews the progress in the application of physical,chemical and biological processes in the treatment of printing and dyeing wastewater,highlighting the application of new type polymer flocculants and specially selected bacteria.

Waste water treatment agents based on bamboo charcoal were prepared by the combination of bamboo charcoal,inorganic polymer flocculant and organic polymer flocculants or by loading ZnO on bamboo charcoal for its higher porosity,larger special surface area and stronger adsorption capacity.

The application of polymeric flocculants to the treatment of effluent in paper making black lye;

Effect of characteristic of polymeric flocculants on sludge conditioning and dewatering and application of an on-line flocculation monitoring technique;