多孔陶瓷材料的制备及对饮用水的矿化试验

Preparation of Porous Ceramic Materials and Mineralization Properties Test for Drinking Water

目前,深度净化的饮用水在经过矿化后,仍然缺少天然矿泉水中含有的微量元素锶等矿物质。为实现饮用水达到天然矿泉水的标准,研究以麦饭石、硒矿石、天青石、镁矿石为主要原料,辅以黏合剂和造孔剂,通过磨粉、造球、煅烧等工艺制备出多孔陶瓷材料,并开展矿化效果研究。结果表明,多孔陶瓷材料的最佳制备条件:造孔剂碳酸氢铵用量为5%、黏合剂硅酸钠用量为0、煅烧温度为1200℃,保温时间为1 h;以天然矿泉水中锶的限值为评价标准,材料在500 mL/min和1000 mL/min流量下可稳定运行70 d,处理水量分别为50、100 m^(3),且无重金属超标的风险。多孔陶瓷材料具备良好的溶出安全性和稳定性,可作为良好的矿化材料用于富锶矿泉水的制备。

At present,the advanced purified drinking water purification still lacks strontium and other minerals contained in natural mineral water.In order to achieve the standard of natural mineral water,principal raw materials such as medical stone,selenium ore,celestite and magnesium ore as the main raw materials,supplemented by adhesives and porogen,prepared porous ceramic materials through grinding,ball making and calcination,and study on effect of mineralization was carried out.The results showed that the best preparation conditions for porous ceramic material were as follows:the dosage of ammonium bicarbonate was 5%,the dosage of sodium silicate was 0,the calcination temperature was 1200℃,and the holding time was 1 h.With the limit value of strontium in natural mineral water as the evaluation standard,the material could run stably for 70 days at the flow rate of 500 mL/min and 1000 mL/min,and the water volume could be treated with 50,100 m^(3),respectively,without the risk of excessive heavy metals.Porous ceramic material has good dissolution safety and stability,which can be used as a good mineralization material for the preparation of strontium-rich mineral water.