不同浓度餐厨垃圾高温厌氧消化研究.pdf

44中国沼气ChinaBiogas2024,42(3)

不同浓度餐厨垃圾高温厌氧消化研究

武林，董容莉”，耿学海，唐山青，谢彦培

（长沙中联重科环境产业有限公司，长沙湖南410006）

摘要：为探索餐厨垃圾高温厌氧消化的可行性，研究不同浓度餐厨垃圾高温厌氧消化过程中厌氧罐内参数的变

化。通过餐厨垃圾连续厌氧发酵的进料负荷变化试验，试验结果表明，低浓度的餐厨垃圾浆料较高浓度的餐厨垃

圾浆料厌氧发酵过程更加稳定，餐厨垃圾沥水浆料在7.5kg·m3d-的COD负荷和6kg·m-3d-的TS负荷下可

以长时间稳定运行，系统的容积产气率可达4m·m-3d-并可长期稳定运行。相较餐厨垃圾中温厌氧发酵，高温厌

氧发酵能显著提升厌氧罐的进料负荷，从而有效降低厌氧罐体的大小，降低工程投资和运行费用。

关键词：餐厨垃圾；高温厌氧消化；进料负荷；容积产气率

中图分类号：S216.4；X703；X705文献标志码：A文章编号:1000-1166(2024)03-0044-08

D0I:10.20022/j.cnki.1000-1166.2024030044

StudyonThermophilicAnaerobicDigestionofFoodWastewithDifferentConcentrations/WULin,DONG

Rongli*,GENGXuehai,TANGShanqing,XIEYanpei/(ChangshaZoomlionEnvironmentalIndustryCoLtd,

Changsha410006,China)

Abstract:Inordertoexplorethefeasibilityofhigh-temperatureanaerobicdigestionoffoodwaste,thechangesofparame-

tersinsideanaerobictanksintheprocessofthermophilicanaerobicdigestionoffoodwastewithdifferentconcentrationswere

studied.Throughtheexperimentoffeedloadvariationincontinuousanaerobicfermentationoffoodwaste.Andtheresults

showedthat,theanaerobicfermentationprocessoflow-concentrationfoodwasteslurryismorestablethanthatofhigh-con-

centrationfoodwasteslury.DrainpulpfromfoodwastecanrunstablyforalongtimeunderCODloadof7.5kg·md-1

andTSloadof6kg·m-3d-,thevolumetricgasproductionrateofthesystemcanreach4m-m3d-andlong-termsta-

bleoperation.Comparedwiththemediumtemperatureanaerobicfermentationoffoodwaste,thehightemperatureanaerobic

fermentationcansignificantlyincreasethefeedloadoftheanaerobictank,thuseffectivelyreducingthesizeoftheanaerobic

tankandreducingengineeringinvestmentandoperatingcosts.

Keywords:foodwas