硝酸盐对矿化垃圾中兼/厌氧甲烷氧化的影响  

Effects of Nitrate on Anoxic /Anaerobic Oxidation of Methane in the Aged Refuse

作　　者：刘妍妍[1,2] 龙焰[1,2] 尹华[3] 叶锦韶[1,2] 何宝燕[1,2] 张娜[1,2] 

机构地区：[1]暨南大学理工学院,广州510632 [2]暨南大学广东省高校水土环境毒害性污染物防治与生物修复重点实验室,广州510632 [3]华南理工大学环境与能源学院,广州510640

出　　处：《环境科学》2013年第11期4349-4355,共7页Environmental Science

基　　金：国家自然科学基金项目(410013230);广东高校优秀青年创新人才培育项目(LYM09030);暨南大学创新与培育基金项目(21612435)

摘　　要：设计全因子实验研究了N03--N对填埋10-12a的矿化垃圾中兼／厌氧甲烷氧化作用的影响．结果表明，兼／厌氧条件下，NO3--N能促进矿化垃圾中CH4的去除．初始CH4和NO3--N对CH4去除和N2产生有明显影响，且两者具有交互作用（P〈0．05）．CH4去除量随着初始CH4体积分数的增加而增加，添加一定含量的NO3-N能促进CH4去除，同时通入一定体积分数CH4可以明显促进反硝化作用，说明矿化垃圾中N03--N还原能与兼／厌氧甲烷氧化耦合．本实验条件下，初始CH4体积分数为30％，NO3--N含量为110mg·kg-1时耦合效应较好．This work investigated the effects of nitrate on anoxic/anaerobic methane oxidation in the aged refuse landfilled 10-12 years by full-factor experiments. The resuhs showed that under anoxic/anaerobie condition, nitrate could promote the removal of methane in the aged refuse. The contents of CH4 and NO3- -N had significant influences on the removal of CH4 and the generation of N2 , and there were significant interactions as well（P 〈 0. 05）. The increasing initial CH4 content evidently enhanced the removal of CH4 and the production of N2. Furthermore, the addition of NO3--N obviously improved the de-nitrification process. The results suggested that nitrate reduction could be coupled to anoxic/anaerobic oxidation of methane in the aged refuse. In the experimental condition, the effort of coupling was most effective when the concentrations of CH4 and nitrate were 30% and 110 mg.kg-1 , respectively.

关 键 词：矿化垃圾 兼 厌氧甲烷氧化 硝酸盐 反硝化 耦合 

分 类 号：X172[环境科学与工程—环境科学] X705