Mimi 發問時間: 社會與文化語言 · 1 0 年前

What is Landfill Fuels??

What is Landfill Fuels??

3 個解答

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  • 1 0 年前
    最佳解答

    堆填氣體

    堆填區的廢物深埋在地底,在地底的缺氧環境下,這些有機廢物會給降解,產生堆填氣體,並會慢慢釋出。如不妥善處理,這些氣體會構成的危險包括:

    爆炸性危險

    助長全球變暖(甲烷是溫室氣體之一)

    揮發性有機化合物會產生光化學煙霧

    而其主要成份有:

    成份

    含量 (百份比)

    甲烷 (CH4)

    55-75%

    二氧化碳 (CO2)

    25-45%

    氮 (N2)

    0-0.3%

    氫 (H2)

    1-5%

    硫化氫 (H2S)

    0-3%

    氧 (O2)

    0.1-0.5%

    Landfill gas typically has methane concentrations around 50%. Advanced waste treatment technologies can produce biogas with 55-75%CH4 or higher As-produced, biogas also contains water vapor, with the fractional water vapor volume a function of biogas temperature; correction of measured volume for water vapor content and thermal expansion is easily done via algorithm.

    http://en.wikipedia.org/wiki/Biogas

    http://zh.wikipedia.org/wiki/%E7%94%9F%E7%89%A9%E6...

    圖片參考:http://l.yimg.com/f/i/tw/ugc/rte/smiley_8.gif

    以上,供您參考!

    2009-05-28 02:40:08 補充:

    I am sorry that the format is a mess!

    參考資料: above 15 years teaching experience
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  • 1 0 年前

    Adding Pocky's comment to 澎媽媽's notes would be the more complete answer. Venting the methane gas is in deed a safety design to modern day landfill site. Often the methan gas is transported by pipe work to other location. So such gas can be used for heating, or electricity generation.

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  • 1 0 年前

    landfill fuel 應該就是從垃圾場裡面的東西(像是沼氣) 轉換成可用的能量吧

    從字面上看的話...

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