生物沥滤法去除印染废水污泥中重金属的效果研究
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2019-03-24 18:52:39
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生物沥滤法去除印染废水污泥中重金属的效果研究·5O·嘉兴学院学报第19卷第6期2007年11月Jo~rnalofJiaxingUniversityVo1.19No.62007.11生物沥滤法去除印染废水污泥中重金属的效果研究李士杏,李菲,郑琴(嘉兴学院生物与化学工程学院;浙江嘉兴314001)摘要:以印染废水污泥为培养介质,通过驯化和加富培养得到氧化硫硫杆菌,初步研究了其对污泥中重金属的生物沥滤效果。结果表明:碱性印染废水污泥在12d内可完成驯化。生物沥滤法能有效去除印染废水污泥中的重金属,在5g·L硫投配比及10%菌液接种量下,Cu、Pb和zn的最高去除率分别达到85.2%、76.9%和98、4%。硫投配比的增加能在一定程度上提高重金属的沥滤效果。关键词:污泥;生物沥滤;重金属中图分类号:X791.03BioleachingofHeavyMetalsfromDyeingWastewaterSludgeLIShi~xing,LIFei,ZHENQin(SchoolofBiologyandChemicalEngineering,JiaxingUniversity,Jiaxing。Zhejiang314001JAbstract:Effectsonremovingheavymetalsfromdyeingwastewatersludgebybioleachingwereinvestigated,TheindigenousAcidithiobacillusthiooxidanswasenrichedfromnativewdstewatersludge.Itwouldtake12daystofinishtheinitialenrichmemandacculturationfromthealkalinesludge、Theresultsindicatedthatefectsonremovalofheavymet—alsfromdyeingwastewatersludgewereobvious.Underthecondition.5g·Lsulfurand10%inoculationquantitywereconducted。85、2%ofCu。76,9%ofPband98、4%ofZnwereremovedfromthesludgeinbioleachingexperi—men
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