QH-2 model biology ceramic grain filter is the new model high effective water treatment filter, developed by our company in recent few years. It is made of the excellent clay, through the science recipe grinding、mixing、modeling、drying、calcinating、sieving etc. then becomes the idea filter: spherical grin、size even、surface red brown、surface coarse having much micro-pores、inside micro pores connected complexly、specific surface large、surface property excellent、void valume high、 excellent absorbing and entrapping pollutant capacity and filtering function. It was certificated by the environment-science department of Qing Huan university civil engineering Zhong Nan supporting-outgoings water research design institute and Shang Hai civil engineering design institute in the inspection、pilot test and commercial production:
　　The filter's physical and chemical properties are advance above the same international one. It can be widely used in several water treatment engineering process, especially for the civil waste water deeply treatment and the severe biology pollution water treatment in the civil supporting system, playing the role of connection、absorption、membrane-growing、filtering.