NOVELTY - Preparation of water supply sludge haycite for micro-polluted water pre-treatment comprises mixing (mass%) dry sludge raw material (70-80), rice hull powder (15-19) and fly ash (1-5), stirring and mixing; placing mixed material into turntable pelleting machine, and then adding water to granulate; placing obtained raw spherical material into rotary furnace, drying, roasting and sintering; putting sintered aggregate in transfer rotary furnace, and naturally cooling to room temperature; and sieving the cooled granule, and removing unqualified products.    USE - Method for preparing water supply sludge haycite for micro-polluted water pre-treatment.    ADVANTAGE - The method adequately uses the sludge of water factory, thus utilizing the resource sludge, the preparation process is simple, and the cost is low. The prepared haycite has surface rich interior micropore and is good for microorganism biofilm growth on surface so as to make the effect of treating micro-polluted water source aquatic. The method has good environmental protection benefit.    DETAILED DESCRIPTION - Preparation of water supply sludge haycite for micro-polluted water pre-treatment comprises:    (A) preparing dry sludge where water content is 80% from lining water supply factory of dewatered sludge, at 105-110 degrees C under the condition of blast drying tank to obtain 52 wt.% of dry sludge to water;    (B) taking pore-dry rice and crushing, sieving with 100-mesh electric sieve to obtain grain size of less than 100 mesh dry sludge and rice hull powder;    (C) mixing (mass%) dry sludge raw material (70-80), rice hull powder (15-19) and fly ash (1-5), stirring and mixing for 30 minutes to stir to obtain mixed material;    (D) placing mixed material into the turntable pelleting machine, then adding water to granulate, obtaining spherical grain diameter of 2-9 mm, and adding 5% water;    (E) placing the obtained raw spherical material into rotary furnace, drying for 60 minutes at 105 degrees C, setting the rotating furnace temperature at increasing speed of 5 degrees C/minute, the temperature in the furnace is 105-300 degrees C, roasting for 30 minutes at 300 degrees C, raising the temperature at 300-500 degrees C for 30 minutes, then at 500-800 degrees C for 30 minutes, and sintering to obtain sintered aggregate;    (F) putting the obtained sintered aggregate in transfer rotary furnace, naturally cooling to room temperature; and    (G) sieving the cooled granule, and removing unqualified products to obtain the ceramic product with different grain diameters.