污泥陶粒联合木本植物净化富营养化水体  

Sludge Ceramics Combined with Woody Plants to Purify Eutrophic Water

作　　者：姜淮莉[1,2] 郭新新 闫容榕 李凯 翁贞文 徐一丹 JIANG Huaili;GUO Xinxin;YAN Rongrong;LI Kai;WENG Zhenwen;XU Yidan(Nanjing Normal University Zhongbei College;Center for Environmental Biotechnology Research,Nanjing Normal University Zhongbei College:Danyang 212300,China)

机构地区：[1]南京师范大学中北学院 [2]南京师范大学中北学院环境生物技术研究中心,江苏丹阳212300

出　　处：《水处理技术》2024年第11期85-89,共5页Technology of Water Treatment

基　　金：国家自然科学基金面上项目(No.22372014);江苏省“大学生创新创业训练计划”项目(No.202213906028V)。

摘　　要：以污泥、高岭土、粉煤灰为原料制备污泥陶粒,通过正交实验确定最佳制备条件,采用扫描电镜(SEM)、X射线衍射仪(XRD)对污泥陶粒进行表征,分别构建以木本植物小叶栀子、花叶杞柳和大白黄杨加陶粒的组合生态浮床,以研究陶粒联合木本植物对富营养化水体的净化效果及植物生长状况。结果表明,污泥∶高岭土∶粉煤灰=2∶3∶1、预热温度300℃、焙烧温度1050℃、焙烧时间15 min条件下制得的陶粒孔隙性较好,含有活性组分,适于做生态浮床基质。植物陶粒浮床对COD、TN、TP及NH_(4)^(+)-N的平均去除率较植物浮床分别提高了6.65%、15.17%、6.56%和11.42%,且植物生长也优于植物浮床。其中“花叶杞柳+陶粒”浮床综合净化效果最好。当陶粒投加量为25 g/L时,既能达到理想的处理效果,又能节约成本,具有一定的应用价值。The sludge ceramic grain was prepared by sludge,kaolin and fly ash,determining the optimal preparation conditions through orthogonal test.Scanning electron microscopy(SEM)and X-ray diffractometer(XRD)were used to characterize the sludge ceramic grain.The combined ecological floating beds were built by the woody plants of Little Leaf Gardenia,leafy wolfberry,Chinese giant white poplar and the ceramic grains to study the purification effect of ceramic grains combined with woody plants on eutrophic water and the growth of the plants.The results showed that the ceramic granules produced under the conditions of sludge:kaolin:fly ash=2:3:1,preheating temperature of 300℃,roasting temperature of 1050℃,and roasting time of 15 min had better porosity,contained active components were suitable to be used as ecological floating bed substrates.The average removal of COD,TN,TP and NH_(4)^(+)-N was improved by 6.65%,15.17%,6.56%and 11.42%respectively,the plant growth was also superior to that of the plant floating bed.Among them,the"leafy wolfberry+ceramic grain"floating bed comprehensive purification effect is the best.When the dosage of ceramic granules is 25 g/L,it can achieve the ideal treatment effect and save the cost,which has a certain application value.

关 键 词：污泥陶粒 木本植物 生态浮床 富营养化 

分 类 号：X52[环境科学与工程—环境工程]