This product is made of fine ceramic mud and achoring agent and binder. It formed by grinded, filtrated, shaped and coked. It is a kind of global pellet whose size is uniform and surface is solid. This product has much virtue, such as large surface area, high void rate, less impurities, high speed of filtering, long enduring time, little water consumption during washing back, and there is nothing harmful to the health. It will decrease the volume of the disinfector and feculent state, the ratio of nitrogen. ammonia and phosphor is over 99%, and the separation ratio of CoDcr is over 40%. This product can improve the effect of filter material instead of quartz sand and anthracite.