微量金属元素对农业废弃物厌氧消化的作用_潘云霞
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2020-01-06 20:12:36
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作者简介:潘云霞,女,博士,副教授,主要从事废弃物资源化利用研究工作微量金属元素对农业废弃物厌氧消化的作用潘云霞(西南大学工程技术学院重庆400716)摘要:在以牛粪为原料的厌氧消化过程中,向厌氧生物反应器中分别连续投加Fe、Co、Ni微量金属元素,研究微量金属元素对牛粪厌氧发酵COD去除率和产气特性的影响。实验结果表明:添加适量的微量金属元素,可以提高COD去除率及产气量,加速厌氧反应器的启动,改善产甲烷菌的生物活性,促进厌氧污泥的颗粒化。关键词:农业废弃物,微量金属元素,厌氧消化,COD去除率,产气特性TheeffectsofTraceMetalsonAnaerobicFermentationofAgriculturalResiduePanyunxia(CollegeofEngineeringandTechnology,SouthwestUniversity,Chongqing400716,P.R.China)[Abstract]ThroughrespectivelyandcontinuouslyswinginginwithtracemetalsFe,Co,Niinanaerobicbiologyreactor,theremovalrateofCODandtheprocessofbiogasproductioninanaerobicfermentationofdairymanurewerestudied.TheresultsshowedthatanappropriatesupplementoftracemetalstoanaerobicsystemcouldimproveCODremovalrateandbiogasproduction,effectivelyshortenreactorstartupperiod.Meanwhile,thesupplementofFe2+、Co2+andNi2+mayimprovedmethanogenbioactivityandpromotedsludgegranulation.[KeyWords]agriculturalresidue,tracemetals,anaerobicfermentation,CODremovalrate,biogasproductioncharacteristics1引言随着畜禽养殖业的迅猛发展
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