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1、某啤酒废水处理工艺设计摘要啤酒是世界通用性饮料，是酒精含量最低的饮料酒，而且营养丰富。生产啤酒产生的废水，主要含有淀粉、蛋白质、酵母菌残体、酒花残渣、残余啤酒、少量酒精及洗涤用碱，有机物浓度较高，虽然无毒，但易于腐败，排入水体要消耗大量的溶解氧，对水体环境造成严重危害。随着啤酒行业的迅速发展，啤酒生产产生的大量废水迫切需要适当的处理，以免对环境造成更恶劣的影响。目前，啤酒废水处理的方法多种多样，由于啤酒废水具有良好的可生化性，常常采用以生化为主，生化与物化相结合的处理工艺。本设计处理啤酒废水采用的U
2、ASB+CASS法，是一种厌氧消化和好氧处理相结合的工艺。厌氧处理能有效处理高浓度有机废水，不但运转费用相对较便宜，且可回收沼气；能耗低，产泥量少。后接的好氧处理，能弥补厌氧处理的不足，能有效去除氮、磷，保证出水水质达标排放。经过设计计算，本工艺COD去除率达到98.8%，BOD去除率高达99%，处理效果显著，出水达到《污水综合排放标准》GB8978-1996一级标准，且回收了大量沼气，创造了一定的经济效益。关键词：UASB，CASS，啤酒废水，有机废水39DESIGNOFABREWERYWASTE
3、WATERTREATMENTPROCESSABSTRACTBeeristheinternationalbeverage,isthelowestalcoholcontentalcoholdrinks,withabundantofnutritious.Wastewatergeneratedbyproductionofbeer,containsmostlystarch,protein,yeastresidue,hopresidue,residualbeer,asmallamountofalcoholand
4、washingwithalkali,organicmatterconcentrationwashigher,althoughnon-toxic,buteasytocorruption,intothewaterbodytoconsumealargeamountDO,ontheaquaticenvironmentcausingseriousharm.Withtherapiddevelopmentofthebeerindustry,beerproductionoflargequantitiesofwast
5、eproperlyaddressedurgentlyneededtoavoidtheimpactoftheenvironmentevenworse.Currently,awidevarietyofbeerwastewatertreatmentmethods,becausegoodbeerwastewaterbiodegradability,oftendominatedbybiochemical,biologicalandphysicochemicaltreatmentprocessescombine
6、d.ThedesigntreatmentofbrewerywastewaterusingtheUASB+CASSmethod,isananaerobicandaerobicdigestionprocessofcombining.Anaerobictreatmentcaneffectivelydealwithhighconcentrationorganicwastewater,notonlyoperatingcostsarerelativelycheap,andrecyclablemethane;en
7、ergyconsumptionislow,producinglesssludge.Followedbyaerobictreatment,anaerobictreatmentcancompensateforthedeficiency,caneffectivelyremovenitrogen,phosphorus,andensurethequalityoftheeffluentdischargestandards.Bydesigncalculations,thisprocessCODremovalrat
8、e98.8%,BODremovalrateofupto99%,asignificanttreatmenteffect,thewaterreached,"IntegratedWastewaterDischargeStandard"GB8978-1996standardlevel,andtherecoveryofalargenumberofmethane,creatingacertaineconomicbenefits.39KEYWORD:UASB,CASS,BREWAG
