某屠宰厂生产废水处理工程设计

毕业设计（论文）题目：某屠宰厂生产废水处理工程设计学院：环境与化学工程专业班级：XXXXXXXXXXXXXXXXXXX指导教师：XXX职称：讲师学生姓名：XXXX学号：XXXXXXXXX摘要本设计为屠宰厂生产废水处理设计，设计过程为初步设计。屠宰废水水质的主要特点是含有大量的有机物，属高浓度有机废水，故其生化需氧量也较大。该屠宰废水处理厂的处理水量为1800m3/d，不考虑远期发展。原污水中各项指标为BOD浓度为1000mg/L，COD浓度为1800mg/L，SS浓度为800mg/L。因该废水COD值较大，不经处理会对环境造成巨大污染，故要求处理后出水达《肉类加工工业水污染物排放标准》一级排放标准即：BOD≤25mg/L,COD≤80mg/L,SS≤70mg/L。经分析知该处理水属易生物降解又无明显毒性的废水，可采用两级生物处理以使出水达标。一级处理主要采用物理法，用来去除水中的悬浮物质和无机物。二级处理主要采用生物法，包括厌氧生物处理法中的UASB法和好氧生物处理法中的SBR法，可有效去除水中的BOD、COD。整个工艺具有投资少，处理效果好，工艺简单，占地面积省，运行稳定，能耗少的优点。关键词：屠宰废水处理，高浓度有机废水，格栅，气浮池，UABA法，SBR法ABSTRACTThisdesignisoneslaughterhousewastewatertreatment.Thedegreeofthedesingisinapreliminaryphase.Themaindistinguishingfeatureoftheslaughterhousewastewatertreatmentisthatitcontainsthemassiveorganicmatters,soitbelongstothehighdemandisalsohing.Thewaterwhichneedstotreatmentintheslaughterhousewastewatertreatmentplantis1800m3/d,regardelessofthespecifiedfuturedevelopment.Varioustargetintherawwastewateris:theconcentrationofBODis1000mg/L,theconcentrationofCODis1800mg/L,theconcentrationofSSis800mg/L.fortheslaughterhousewastewater’sCODishigh,itcouldpollutetheenvironmentifdrainedbeforetreatment,soitrequesttheslaughterhousewastewaterwhichdrainedmustbestrictlytreatedtotheoneeffluencestandardinthecountry,whichisasfollowing:BOD≤25mg/L,COD≤80mg/L,SS≤70mg/L.Aftertheanalysis,thequalityofthisprocessingwaterbelongstothewastewaterthateasybiologydegradeandnothavetheobviouspoison,couldusetwolevelsofbiologicaltreatmenttocausethewaterdrainedmeetthedesignatedstandard.firstlevelofprocessingmainlyusesthephysicalmethods,whichremovesthesuspendedmatterandtheinorganicsubstanceinthesewage.Secondlevelsofprocessingmainlyusesthebiologymethods,consistsofUASBofdemandoxygenbiologymethodsandSBRofanaerobicoxygenbiologymethods,whichcouldremoveBOD,CODinthewastewater.Theentirtechnologicalprocesshavethecharacterisiticsoflowerinvestment,goodtreatmenteffect,easytechnologyprocess,usingsmallarea,runningsteady,andconsuminglowerenergy.KEYWORDS：slaughterhousewastewatertreatment，highconcentrationoforganicwastewater,screens,flotation,UASBtechnology,SBRtechnology1目录摘要..............................................................................................................................2前言..............................................................................................................................1第1章概论..................................................................................................................21.1设计任务及依据.............................................................................................21.1.1设计任务..............................................................................................21.1.2设计依据..............................................................................................21.2设计要求.........................................................................................................21.3设计原则.........................................................................................................3第2章水质特性及水量..............................................................................................42.1废水危害及来源.............................................................................................42.1.1废水的危害.........................................................................................42.1.2废水的来源..........................................................................................42.2废物组成.........................................................................................................4第3章屠宰废水处理工艺流程..................................................................................63.1工艺比较分析及方案确定.............................................................................63.2处理工艺流程...............................................................................................113.3工艺设计说明...............................................................................................12第4章主要设备计算与选型....................................................................................134.1粗格栅设计计算...........................................................................................134.1.1设计说明............................................................................................134.1.2设计参数............................................................................................134.1.3设计计算............................................................................................144.2调节池..........................................................................................................164.3筛滤机设备选型...........................................................................................164.4气浮除油池..................................................................................................1724.4.1设计说明............................................................................................174.4.2气浮池计算.......................................................................................194.5UASB反应器设计...................................