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时间:2019-09-05
《含油率对餐厨垃圾干式厌氧发酵的影响》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、第35卷第8期环境科学学报Vol.35,No.82015年8月ActaScientiaeCircumstantiaeAug.,2015DOI:10.13671/j.hjkxxb.2015.0125任连海,黄燕冰,王攀,等.2015.含油率对餐厨垃圾干式厌氧发酵的影响[J].环境科学学报,35(8):2534⁃2539RenLH,HuangYB,WangP,etal.2015.Effectofoilcontentsondryanaerobicdigestionofrestaurantgarbage[J].ActaScientiaeCircumstantiae,35(8):2534⁃2539含油
2、率对餐厨垃圾干式厌氧发酵的影响∗任连海,黄燕冰,王攀,张明露北京工商大学食品学院,北京100048收稿日期:2015⁃01⁃20修回日期:2015⁃03⁃19录用日期:2015⁃03⁃30摘要:餐厨垃圾含油率高,且随着地域的变化有显著差别,含油率的高低对餐厨垃圾厌氧消化产气有一定影响.在中温(35℃)和高温(55℃)条件下,研究了不同含油率(0、2%、4%、6%、8%、10%)对餐厨垃圾干式厌氧发酵过程中日产气量、累计产气量、总固体(TS)、挥发性固体(VS)及甲烷产量的影响.结果表明:在中温和高温条件下,当含油率为6%时,200g餐厨垃圾的累计产气量达最大值,分别为1391.6mL和216
3、5.9mL.此时,TS和VS的去除率也最高,中温时去除率分别为29.4%(TS)和33.9%(VS),高温时去除率分别为33.2%(TS)和38.0%(VS).在餐厨垃圾干式厌氧发酵过程中,甲烷的产量占可燃气的体积分数逐渐升高.在中温厌氧发酵条件下,含油率为10%的餐厨垃圾发酵进行到26d时,甲烷的体积分数最高,为80.5%.在高温干式厌氧发酵条件下,含油率为10%的餐厨垃圾发酵进行到23d时,甲烷的体积分数最高,为84.2%.关键词:餐厨垃圾;含油率;干式厌氧发酵文章编号:0253⁃2468(2015)08⁃2534⁃06中图分类号:X705文献标识码:AEffectofoilconten
4、tsondryanaerobicdigestionofrestaurantgarbage∗RENLianhai,HUANGYanbing,WANGPan,ZHANGMingluSchoolofFoodandChemicalEngineering,BeijingTechnologyandBusinessUniversity,Beijing100048Received20January2015;receivedinrevisedform19March2015;accepted30March2015Abstract:Restaurantgarbageisakindoforganicwastewit
5、hhighoilcontentanditshowssignificantregionaldifferences.Thelevelofoilcontenthasaneffectonbiogasyieldfromdryanaerobicdigestion.Atmesothermalandthermophilicconditions(35℃and55℃),theeffectsofdifferentoilcontents(0,2%,4%,6%,8%,10%)ondailybiogasyield,cumulativebiogasyields,totalsolids(TS),volatilesolids
6、(VS)andCH4contentofthecombustiblegaswereinvestigated.Theresultshowedthatthemaximumcumulativebiogasyieldswereobtainedatoilcontentof6%with200gofrestaurantgarbagebothunder35℃and55℃.Thebiogasyieldswere1391.6mLand2165.9mL,respectively.ThemaximumremovalratesofTSandVSwerealsoobtainedunderthiscondition.The
7、removalrateofTSandVSwere29.4%and33.9%at35℃,33.2%and38.0%at55℃,respectively.Thevolumepercentageofmethaneincombustiblegasincreasedduringtheprocessofdryanaerobicdigestion.Atmesothermalcondition,themaximalmetha
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