权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Production Process of Nitrous oxide and Countermeasure in Landfill Site

垃圾填埋场一氧化二氮的生产过程及对策

基本信息

批准号：
10650546
负责人：
TANAKA Ayako
金额：
$ 2.18万
依托单位：
Fukuoka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 1999
项目状态：
已结题

项目摘要

Recently, an incineration is becoming a main intermediate waste processing method due to high waste reduction efficiency in volume and weight in Japan. Therefore, the amount of incineration residue is increasing in landfill and the quality of landfilled waste changed to inorganic material. Consequently, the generation amount of methane and carbon dioxide form the landfill decreased. But the nitrogen compounds such as ammonium and nitrate still remain and it is possible to produce the nitrous oxide which has five times as high in the greenhouse effect as methane on nitrification and denitrification process. So, we carried out the experiment using the landfill modeled lysimeters and the shaking tests to clarify the production process of nitrous oxide and to find out a countermeasure against the production of nitrous oxide in landfill mainly disposed or the incineration residue. The results of this research are summarized as follows ;1) In landfill mainly disposed of the incineration resi … More due, the nitrous oxide is produced on the biological oxidation of ammonium (nitrification) and the chemical reduction of nitrate.,2) Nitrification take place by nitrifyer and chemical reduction by the catalysis of metal such as ferrous and cuprous compounds including in the incineration residue.,3) Production activity of nitrous oxide on anaerobic condition is higher than on aerobic.,4) Ratio of nitrous oxide production to the nitrogen decrease amount is 0.38% in incineration residue only and 0.10% incombustibles on chemical reduction and 0.33% on biological nitrification.,5) Production rate of nitrous oxide is higher in the landfill only disposed of the incineration residue than that the mixture of incineration residue and incombustibles.,6) This is due to the decline of chemical reduction activity by the oxidation activity which incombustibles may have.,7) It was estimated that the generation amount of nitrous oxide from landfill is 5.42〜8.92 t-NィイD22ィエD2O/year.,8) Countermeasures against nitrous oxide production are to be more aerobic in landfill layer and to avoid the disposing of incineration residue only. Less

近年来，在日本，焚烧由于在体积和重量上的高废物减少效率而成为主要的中间废物处理方法。因此，垃圾填埋场中焚烧残渣的数量不断增加，填埋垃圾的性质逐渐向无机物转变。因此，填埋场甲烷和二氧化碳的产生量减少。但硝化反硝化过程中仍有铵、硝酸盐等氮化合物残留，可能产生温室效应是甲烷5倍的氧化亚氮。为此，本研究利用填埋场模拟蒸渗仪和振动试验，对填埋场主要处置的垃圾或焚烧残渣中N2 O的产生过程进行了研究，并探讨了N2 O产生的对策。本研究的主要结果如下：1）垃圾填埋场主要处置焚烧残渣， ...更多信息由于一氧化二氮是在铵的生物氧化（硝化）和硝酸盐的化学还原上产生的，2)硝化作用通过硝化器发生，化学还原作用通过金属的催化作用发生，例如焚烧残余物中的亚铁和亚铜化合物。3)厌氧条件下氧化亚氮的产生活性高于好氧条件下，4)N2 O的产生量占氮素减少量的比例仅为焚烧残渣的0.38%，化学还原的N2 O产生量占不可燃物的0.10%，生物硝化的N2 O产生量占氮素减少量的0.33%。5)仅填埋焚烧残渣的填埋场氧化亚氮的产生速率高于焚烧残渣与不可燃物混合填埋场，6)这是由于化学还原活性因不可燃物可能具有的氧化活性而下降，7)据估算，垃圾填埋场氧化亚氮的产生量为5.42 × 8.92 t-N·H2O·D22·H2O/年。8)控制氧化亚氮产生的对策是填埋层的好氧化和避免单纯处置焚烧残渣。少