Treatment of landfill leachate by immobilized microorganisms

作     者：YE ZhengFang YU HongYan WEN LiLi NI JinRen 

作者机构：Key Laboratory of Water and Sediment Sciences of Ministry of EducationDepartment of Environmental EngineeringPeking UniversityBeijing 100871China Key Laboratory of Environmental and Urban SciencesShenzhen Graduate SchoolPeking UniversityShenzhen 518055China 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2008年第51卷第10期

页      面：1014-1020页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：the Department of Environmental Engineering Second Phase of 211 Project  Peking University (Grant No. 211-2-Department of Environmental Engi-neering-09) 

主　　题：immobilization microbial performance treatment landfill leachate 

摘      要：This paper focuses on the outcome and the main performance of the immobilized microbial that treats landfill leachate. Based on the analysis of COD and ammonia-nitrogen of the influent and effluent, research was done on the high removal efficiency of COD and ammonium nitrogen by immobilized microbial. The leachate composition was analyzed qualitatively using GC-MS before and after being treated. Biological loading of efficient microbial flora on the carrier was measured by Kjeldahl’s method. Finally, the patterns of immobilized microbe were observed through scanning electron microscopy (SEM). The results showed that in immobilized microorganisms system, the efficiencies of COD and nitrogen were 98.3% and 99.9%, respectively. There was a great reduction of organic components in effluent. When the immobilized biomass on the carrier was 38 g·L?1 (H2O), the filamentous microorganism was highly developed. There was no inhibitory effect on the nitrobacteria and nitrococcus, when ammonia was over 200 mg·L?1 and NH3 over 150 mg·L?1. At a high organic loading, it still had good nitrification. This paper also compares the performance of immobilized microbial with free microbial under the same condition. The immobilized microbial technology demonstrated better than the latter in all aspects.