The application of the automatic drugfeeding equipment with variable frequency and speed to microflocculation-filtration technics,the usage of PFC,the characteric of the automatic drugfeeding equipment and the situation of its usage are all introduced.

The Haberer water treatment process consists of upflow filtration with light media,reflocculation filtration and filtration with powdered activated carbon,so the process combines togather flocculation,filtration and powdered activated carbon adsorption.

Using ferric chloride and polyaluminium chloride(PAC) as flocculants,the experimental study was made on pretreatment of low-turbidity seawater by single and tandem micro-flocculation filtration columns filled with quartz sand,zeolite,manganese sand and granular activated carbon.

A pilot scale study on treating contaminated source water was done by using the combined process of BAF- Micro-flocculation Filtration, and the pollutants removal of BAF and Micro-flocculation Filtration was especially investigated.