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1、.毕业论文屠宰污水厌氧消化工艺研究页.摘要屠宰废水是我国最大的有机污染源之一，我国大部分城市已基本上实现了禽畜的定点集中屠宰，同时随着人们生活水平的不断提高，屠宰场的规模也在不断扩大，屠宰废水的排放量越来越大。屠宰废水呈红褐色、有腥味、含有大量血污、皮毛、碎骨肉、油脂和内脏杂物，COD5、BOD5、氨氮、SS等指标均较高，可生化性优良，无毒性。屠宰废水受其生产过程的影响明显，其水质水量波动范围较大。我国从50年代开始考虑屠宰废水的处理，到70年代仍以一级处理为主，80年代以后，新的处理技术逐渐被开发应用，处理程度不断提高。由于厌氧生物处理技术具有工艺稳定、节能、运行简单等优点，近年来在高浓
2、度有机废水的处理中得到了飞速发展。本文以污水BOD去除率为指标，采用厌氧消化的处理方法。经试验所得，温度在37℃和38℃对BOD去除率的提高影响较好；pH值在6.8和7.2时，产甲烷菌的生长具有优势，BOD去除率较好；锰离子浓度在19.50μg/ml和20.00μg/ml对厌氧微生物的抑制作用很不明显，BOD去除率为最佳。综合考虑温度、pH值、锰离子浓度对厌氧消化的影响和BOD去除率，13号、14号、9号BOD的去除率较好。处理的最佳组合为最优组合方案为424即pH值为7.5，锰离子浓度为20.00μg/ml，温度为38.0℃。关键词：屠宰污水；厌氧消化；工艺页.ABSTRACTSlaug
3、hterwastewatertreatmentisoneofthelargestorganicpollutioninChina,Mostofourcitieshasbasicallycompleteditslivestockslaughteroffixed-pointconcentration,Atthesametimeaspeoplelivingstandardriseceaselessly,Thesizeoftheslaughterhouseinexpandsunceasingly,slaughterwastewatertreatmentemissionsismoreandmorebi
4、g.Slaughterwastewatertreatmentisreddishbrown,astench,containsalotofgory,fur,brokenflesh,greaseandinternalsundry,COD5,BOD5,ammonianitrogen,SSetcindexesistaller,canbiochemicalsexgood,non-toxic.Slaughterwastewatertreatmentbytheprocessofproduction,thewateraffectsobviouslyfluctuategreatly.Countryfrom50
5、timebeginconsideringslaughterwastewatertreatmentprocessing,tothe70'sstillwithprimarytreatmentisgivenpriorityto,the1980slater,newprocessingtechnologywasgraduallydevelopmentapplication,processingdegreeenhancesunceasingly.Becauseofanaerobicbiologicaltreatmenttechnologyhasthecraftstability,energysavin
6、g,easyoperation,inrecentyearsintheadvantagesofhighconcentrationorganicwastewatertreatmentgainedrapiddevelopment.ThispapertakeswastewaterBODforindex,theremovalofanaerobicdigestiontreatmentmethodAfterthetestin37℃temperaturegains,with38℃measurementofBODremovalimproveinfluencebetter;PHvalueinthe6.8and
7、7.2,methanogensgrowthhasadvantages,BODremovalrateisbetter;Manganeseionconcentrationin19.50μg/mland20.00μg/mlofanaerobicmicrobeisnotobviousinhibition,BODremovalrateisthebest.Comprehensiveconsiderationofthetemperat
