硅藻土陶粒性能及其在污水处理中的应用  

Properties of Diatomaceous Soil and its Application in Sewage Treatment

作　　者：张巨松[1] 刘鑫 ZHANG Jusong;LIU Xin(School of Materials Science and Engineering,Shenyang Jianzhu University,Shenyang,China,110168)

机构地区：[1]沈阳建筑大学材料科学与工程学院

出　　处：《沈阳建筑大学学报（自然科学版）》2019年第6期1067-1073,共7页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(50479059)

摘　　要：目的研究改性后的硅藻土陶粒对水处理的影响效果,挑选出最优方案,从而改善生活污水的处理问题.方法将硅藻土中掺入水玻璃,采用高温煅烧的方式制成硅藻土陶粒,通过研究陶粒的煅烧温度、水玻璃掺入量、吸水率、强度、紫外分光光度值、化学需氧量(COD)分析硅藻土陶粒对污水的处理效果及循环使用次数.结果硅藻土与水质量比为1∶1.2时黏结性最好;随着煅烧温度的增加,陶粒的性能有所增加,并在800℃达到峰值;硅藻土陶粒的水玻璃掺量越多,性能越好,峰值掺量为10%;将净化污水后的陶粒煅烧进行重复利用,净化水性能逐渐减弱.结论煅烧温度为800℃、水玻璃掺量为10%的硅藻土陶粒相比于其他配比的陶粒对生活污水的处理效果最好,且可循环使用3~5次.To study the effect of modified diatomaceous clay ceramsite on water treatment,select the optimal solution to improve the treatment of domestic sewage.By studying the calcination temperature,sodium silicate,water absorption,strength,UV spectrophotometric value,chemical oxygen demand COD,the treatment effect and recycling time of silica clay on sewage were analyzed.The results showed that diatomite was bonded to water quality ratio of 1∶1.2.adhesion is best;With the increase of calcination temperature,the performance of ceramic grains increased and reached a peak at 800 ℃;The more the water glass of diatomite clay,the better the performance.The peak amount was 10 %.The clay grains of diatomaceous soil with calcination temperature of 800 ℃ and water glass doped by 10 % are more effective than those of other proportions in treating domestic sewage.And can be recycled 3~5 times.

关 键 词：硅藻土陶粒 煅烧 过滤 生活污水 

分 类 号：TU502[建筑科学—建筑技术科学]