毕业设计某毛纺厂废水处理工程工艺设计说明计算书

**毛纺厂废水处理工程工艺设计1摘要本设计题目为“**毛纺厂废水处理工程工艺设计”，该工程所处理的污水主要是由染色废水和洗线、洗毯、刺绣车间废水组成。经建设方确认，本设计规模按日最大处理水量：2500m3/d（包括处理站自用水排水量）。污水主要污染物CODcr、SS、BOD5、S2-、色度等，其污水水质如下：染色废水：CODcr=1495mg/L，BOD5=340mg/L，SS=540mg/L，S2-=1.35-2.16mg/L，PH=3.7-8.62，色度=300倍；洗线、洗毯、刺绣车间废水：CODcr=480mg/L，BOD5=300mg/L，SS=200mg/L，S2-=1.2mg/L，PH=3.7-8.62，色度=50倍。冬季平均温度-14.9℃，夏季平均温度为29.2℃，年平均降水量427.1mm，冬季主导风向为西北，夏季主导风向为东南。处理站处理水质为：BOD5≦20mg/l，CODcr≦100mg/l，SS≦70mg/l，PH=6-9，色度≤50倍，出水水质符合国家的二级排放标准。本设计采用水解酸化加生物接触氧化处理废水。处理构筑物主要有调节池、水解酸化池、生物接触氧化池、竖流式沉淀池、浓缩池、泵房、脱水机房和鼓风机房等。其主要构筑物生物接触氧化池采用传统的一段式接触氧化，总共采用两座，每座分为八格，处理效果明显。预处理的调节池和水解酸化池有效的降低了污水的各项指标，为生物接触氧化池的进水，提供了最佳进水指标，同时还有效的降低了污水的色度，再加上后面的竖流式沉淀池的絮凝沉淀作用，色度指标大大降低，基本上可以满足出水的要求。关键词：印染废水废水处理生物接触氧化**毛纺厂废水处理工程工艺设计2ABSTRACTThedesignentitled**awoolenmillwastewatertreatmentprocessdesign,Theworksaremainlytreatedsewageeffluentfromdyeingandwashinglines,washingblankets,embroideryworkshopwastewatercomponents.Confirmedbytheconstructionside,thedesignofhandlingthelargest-scalewaterdaily:2500cubicmetersperday(includingwaterdischargefromthestation).SewagemajorpollutantsCODcr,SS,BOD5,S2-,color,theeffluentqualityareasfollows:dyeingwastewater:CODcr=1495mg/L,BOD5=340mg/L,SS=540mg/L.S2-=1.35-2.16mg/L,pH=3.7-8.62,color300times;washingline,washingblankets,embroideryworkshopwastewater：CODcr=480mg/L,BOD5=300mg/L.SS=200mg/L,S2-=1.2mg/L,PH=3.7-8.62.color50times.Theaveragewintertemperature-14.9℃,averagesummertemperatureof29.2℃,withtheaveragerainfall427.1mm.Winterwindsledtothenorthwest,thesummerwindsledtothesoutheast.WaterDisposalStation:BOD5≦20mg/l,CODcr≦100mg/l,SS≦70mg/l,PH=6-9,color≦50,theeffluentqualityinthestate'stwoemissionstandards.ThedesignacidhydrolysisBiologicaloxidationwastewatertreatment.Dealingwiththemainstructuresregulationpool,poolacidhydrolysis,biologicaloxidationpond,theverticalflowsedimentationtank,concentratedpool,pumpingstations,Dehydrationroomandtheotherblower.Themainstructuresofbiologicaloxidationpondusedforthetraditionalcontact-oxidation,usingatotaloftwo,eachdividedintoeightblocks.significanttreatmenteffect.PretreatmentRegulationpoolsandpoolacidhydrolysiseffectivelyreducethesewageindicatorsofbiologicaloxidationpondinundated.Intakeprovidesthebestindicator,butalsoeffectivelyreducesewagecolor,plusbehindtheverticalflowsedimentationtankofflocculationandsedimentation,colorindicatorsgreatlyreduced.Basicallymeetwaterrequirements.Keywords:dyeingwastewaterwastewatertreatmentbiologicaloxidation**毛纺厂废水处理工程工艺设计3目录第1章概述·······································································································61.1设计依据及设计任务··························································································61.1.1设计题目···········································································································································61.1.2设计依据···········································································································································61.2设计水量···········································································································81.3处理程度···········································································································81.4去除率···············································································································8第2章污水处理站方案的确定········································································92.1确定污水处理方案的原则··················································································92.2污水处理方案的确定·························································································92.2.1处理标准的确定·····························································································································92.2.2污水处理路线选择························································································································92.3污水处理工艺流程方案介绍············································································112.3.1传统活性污泥法·························································································································112.3.2氧化沟工艺···································································································································122.3.3生物接触氧化工艺·····················································································································132.4工艺流程的确定·······························································································142.5主要构筑物的选择···························································································142.5.1格栅·················································································································································142.5.2进水闸井·······································································································································142.5.3调节池·····································································································································