摘要
硅藻土具有空隙率高、比表面积大、比重小、吸附性强等优良特性,使之在污水处理领域的应用越来越广泛。本研究对硅藻土进行焙烧改性,并用来处理垃圾渗滤液。实验得出硅藻土经过焙烧改性后,对垃圾渗滤液的处理效果有所提高,其最佳焙烧温度为400℃,最佳投加量为2 g,最佳pH值为5.5,最佳搅拌时间为30min,对COD去除率为16.9%,但去除效果仍有待于提高,建议结合多种改性方式以进一步提高硅藻土的水处理能力。
With high void content,great specific surface area,small density and strong adsorption,the diatomite is more and more widely used in the field of wastewater treatment.In this study,the diatomite was roasting modified,and then used for treatment of landfill leachate.The results showed that landfill leachate treatment effect of the diatomite slightly increased after it is roasting modified.The optimum roasting modified temperature was 400℃,the optimum dosage of roasting modified diatomite was 2 g,the optimum pH value of landfill leachate was 5.5,the best mixing time was 30 min.In the case,the COD removal efficiency was 16.9%,which still needs to be improved,so it is recommended to combine some modified methods in a bid to improve the wastewater treatment capacity of the diatomite.
出处
《环境科学与管理》
CAS
2012年第11期101-103,共3页
Environmental Science and Management
基金
武夷学院青年教师专项科研基金项目(xq201019)
关键词
硅藻土
焙烧改性
垃圾渗滤液
diatomite
roasting modified
landfill leachate
