研究报告
冯凯,黄天寅,张后虎,吴玮,陈新.驯化矿化垃圾CH4氧化速率和N2O释放研究[J].环境科学学报,2013,33(9):2539-2545
驯化矿化垃圾CH4氧化速率和N2O释放研究
- Landfill CH4 oxidation and N2O emissions from incubated mineralized refuse
- 基金项目：国家自然科学基金(No.41005090)
- 作者
- 单位
- 冯凯
- 苏州科技学院环境科学与工程学院, 苏州 215011
- 黄天寅
- 苏州科技学院环境科学与工程学院, 苏州 215011
- 张后虎
- 环保部南京环境科学研究所, 南京 210042
- 吴玮
- 苏州科技学院环境科学与工程学院, 苏州 215011
- 陈新
- 苏州科技学院环境科学与工程学院, 苏州 215011
- 摘要：利用畜禽废水驯化矿化垃圾,并将其与原生矿化垃圾和粘土对比,分析了土壤理化性质、含水率、温度等对CH4氧化能力和N2O释放的影响.研究表明:驯化矿化垃圾对CH4的氧化能力(15.48 μmol·g-1·h-1)明显高于原生矿化垃圾和所选粘土土样;材料的粒径尺寸、有机质、氨氮硝化率及硝态氮生成率均与CH4氧化能力有着显著的正相关性;驯化矿化垃圾在加入蒸馏水后释放大量的N2O,产生N2O的量是原生矿化垃圾的2倍,并且比粘土高一个数量级.由于驯化矿化垃圾对环境的适应能力强,CH4氧化能力高,进而能够减少温室气体排放,可作为一种较为理想的填埋场覆土材料.
- Abstract：In this study, livestock wastewater was used to incubate mineralised refuse (IMR). The effects of physicochemical properties, soil water content and soil temperature on CH4 oxidation and N2O emissions from IMR were reported and compared with original mineralised refuse (OMR) and soil. The maximum CH4 oxidation potential (MOP) of IMR was 15.48 μmol·g-1·h-1, which is substantially higher than those of OMR without incubation and soil. Correlation analysis (p>0.05) showed that the D50 value, organic matter content, NH4+-N nitrification and NO3--N generation rates (p<0.05) were highly positively correlated with the MOP for each of the three types of materials. Following the addition of distilled water, N2O emissions from the IMR were almost two times and one order of magnitude greater than those of the OMR (p>0.05) and soil (p>0.05). IMR was a low-energy practice for the production of a MSW landfill bio-cover material that could help to mitigate CH4 emissions without a secondary pollution risk because of its tolerance for environmental changes.
- Key words：landfill CH4 emissions methane oxidation potential mineralised refuse ammonia-oxidising bacteria N2O emissions
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