【摘要】 采用硅藻土多孔微珠和玻璃粉多孔微珠为原料,通过干压成型的方法制备多孔陶瓷坯体,经干燥、烧结后得到多孔陶瓷。研究了烧结温度对其开气孔率,比表面积,中位孔径,抗压强度和晶相的影响,并研究了其对细菌总数及浊度色度的过滤效果。研究表明,经800℃煅烧的多孔陶瓷抗压强度为(1.91±0.09) MPa,中位孔径为7.4μm,比表面积为2.9 m~2/g,开气孔率可达75%,有利于水通量的提高。对菌落总数的截留效率达到99%以上,过滤后水的浊度,色度达到生活饮用水卫生规范,其有望应用于自来水厂的深度处理工艺及终端水处理设备中的粗滤内芯,具有良好的应用前景。更多还原

【Abstract】 The porous ceramic was prepared by dry pressing with diatomite porous microspheres and glass powder porous microspheres as raw materials. The effect of sintering temperature on its open porosity, specific surface area, median pore diameter, compressive strength and crystal phase was studied, and its filtration performance including total bacterial removal efficiency, turbidity and chroma was studied. The research showed that the porous ceramics calcined at 800 ℃ had a compressive strength of(1.91±0.09) MPa, a median pore diameter of 7.4 μm, a specific surface area of 2.91 m~2/g, and an open porosity of 75%, which was beneficial to the improvement of water flux. The removal efficiency of more than 99% for the total number of colonies was achieved in this experiment using the filtration of the porous ceramics. The turbidity and chroma of the filtered water met the hygienic standard of drinking water. It was expected to be applied to the advanced treatment process of the water plant and the coarse filters in the terminal water treatment equipment, and had a good application prospect.更多还原