正交实验法优化SBR处理老龄垃圾渗滤液脱氮条件  

Optimization of Denitrification Conditions for SBR Treatment of Old Landfill Leachate by Orthogonal Experiments

作　　者：周锐 黄家榜 桑建伟 杨宏星 朱守诚 ZHOU Rui;HUANG Jia-bang;SANG Jian-wei;YANG Hong-xing;ZHU Shou-cheng(Anhui Province Key Laboratory of Sewage Purification and Ecological Rehabilitation Materials,Eastern Microchem Molecular Materials co.,LTD,Hefei Anhui 230088,China)

机构地区：[1]污水净化与生态修复材料安徽省重点实验室,合肥市东方美捷分子材料技术有限公司,安徽合肥230088

出　　处：《环境科学导刊》2022年第3期54-57,共4页Environmental Science Survey

摘　　要：针对老龄垃圾渗滤液脱氮难题,采用单因素试验和正交试验相结合的方法,选取进水pH、进水C/N(COD/NH3-N)比值、曝气时间3个因素。按照L_(9)(3^(4))正交表进行三因素三水平试验,考察其对老龄垃圾渗滤液氨氮的影响。正交试验结果表明:试验中进水pH、进水C/N、曝气时间均为显著性因素,对垃圾渗滤液氨氮去除率的影响顺序依次为:进水pH﹥进水C/N﹥曝气时间。SBR处理老龄垃圾渗滤液脱氮的最佳条件为:进水pH为8.0,进水C/N为25,曝气时间为6 h。In order to solve the difficult problem of denitrification of aged Landfill leachate,single-factor test and orthogonal experiment were combined.The pH of influent,ratio of influent C/N(COD/NH3-N)and aeration’s time were selected.Three-factor and three-level test were done to investigate their factors of ammonia-nitrogen for aged Landfill leachate with L_(9)(3^(4))orthogonal table.The orthogonal experiment results showed that the pH of influent,C/N and aeration’s time were significant factors in the experiment.The order of influence on ammonia nitrogen removal rate of landfill leachate was influent pH>influent C/N>aeration’s time.The optimal conditions for denitrification in SBR treatment of aged landfill leachate were that the pH of influent was 8.0,the ratio of the influent C/N was 25,and the aeration’s time was 6 hours.

关 键 词：老龄垃圾渗滤液 氨氮 SBR 正交实验 

分 类 号：X703[环境科学与工程—环境工程]