It is used for wiping off the impurities of solid suspending objects .grease and jelly in the industrial and urban sewage water.With the chemical flocculant help,It can reduce Ssand COD of the water in the maximum extent .In the papermaking industry ,it can be used for white water and midle segment wastewater as deinking wastewater treatment ,on the one hand ,it can be recovered fiber ,the other it can handle the sewage water again to recycle or achieve discharge standards ,thus greatly reducing the environmental pressure. The machine waw designed according to American style which is popular in 1990s. At present it is the most advanced technology,simple structure and easy maintenance in our nation.