厨余垃圾好氧堆肥与污泥厌氧消化一体化处理_李果
- 环保小兵 王续
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2020-03-12 17:36:32
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第9卷第3期环境工程学报Vol.9,No.32015年3月ChineseJournalofEnvironmentalEngineeringMar.2015厨余垃圾好氧堆肥与污泥厌氧消化一体化处理李果1何强1*吴正松1,2彭晨1(1.重庆大学三峡库区生态环境教育部重点实验室,重庆400045;2.重庆大学低碳绿色建筑国际联合研究中心,重庆400045)摘要利用自行研制的城镇生活垃圾与污水厂污泥一体化处理反应器对厨余垃圾好氧堆肥和污水处理厂污泥厌氧消化进行了实验研究,结果表明,在环境温度8~17.2℃的条件下,垃圾仓温度范围为17.2~50℃,堆肥垃圾含水率由(91.0±1.8)%降为(85.1±5.2)%,pH维持在5.92~7.40之间,VS/TS由0.78±0.06降为0.60±0.12,垃圾蛋白酶活性在第15天后维持在153.5~347.5U/gDW。污泥仓温度主要范围为25~35℃,排泥含水率由(99.2±0.3)%降为(96.0±1.5)%,pH维持在6.77~6.97之间,VS/TS由0.66±0.07下降为0.44±0.11。污泥仓日均产气量为(44.7±8.6)L,其中甲烷平均体积分数为(61.32±4.68)%,污泥蛋白酶活性在第4天后稳定在0.98~1.78U/mL之间。一体化反应器实现了厨余垃圾与污水厂污泥在同一反应器中集中处理,并利用垃圾堆肥时产生的热量为污泥浓缩消化提供温度条件。关键词污泥厌氧消化垃圾好氧堆肥一体化反应器协同处理温度中图分类号X703文献标识码A文章编号1673-9108(2015)03-1381-08IntegratedtreatmentofkitchengarbageaerobiccompostingandsludgeanaerobicdigestionLiGuo1HeQiang1WuZhengsong1,2PengChen1(1.KeyLaboratoryofThreeGorgesReservoirRegion’sEco-Environment,MinistryofEducation,ChongqingUniversity,Chongqing400045,China;2.NationalCentreforInternationalResearchofLow-CarbonandGreenBuildings,ChongqingUniversity,Chongqing400045,China)AbstractAerobiccompostingofkitchenwasteandanaerobicdigestionofsewagesludgewereinvestigatedsimultaneouslyinanintegratedreactor.TheresultspresentedthatmoisturecontentandVS/TSofcompostablewastedereasedfrom(91.0±1.8)%and0.78±0.06to(85.1±5.2)%and0.60±0.12,respectively,whentheambienttemperatureandtemperatureofgarbagecabinfluctuatedatbetween5.92~7.40,and17.2~50℃.Also,pHofcompostablewastemaintainedat5.92~7.40,andtherelevantproteaseactivitystabilizedaround153.5~347.5U/gDWafter15d.Bycontrast,whenthetemperatureofsludgecabinrangedfrom25to35℃duringtheoperation,moisturecontentandVS/TSofeffluentsludgedecreasedfrom(99.2±0.3)%and0.66±0.07to(96.0±1.5)%and0.44±0.11.Meanwhile,whilepHofsludgemaintainedat6.77~6.97,andtherelevantproteaseactivitystabilizedaround0.98~1.78U/mLafter4d.Averagedailygasproductioninsludgecabinwas(44.7±8.6)L,and(61.32±4.68)%oftheseproducedgaswasmethane.Insum,theintegratedreactorinthestudyachievedthethecollaborativetreatmentofkitchenwasteandsewageslud
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