5000吨印染废水处理工艺

河海大学环境工程毕业设计第1页共66页5000m3/d印染废水处理工程设计摘要本设计中，污水处理规模为日处理生产废水5000m3/d，进水水质：COD为900mg/L，BOD为250mg/L,SS为180mg/L，色度为400度，pH为6，NH3-N为30mg/L。出水水质达到《纺织染整工业水污染物排放标准》（DB32/670-2004）中规定的排放的要求，即COD≤100mg/L，BOD≤25mg/L，SS≤70mg/L，色度≤40度，pH为6~9，NH3-N≤15mg/L。印染废水具有色度高，COD、BOD含量高，成分复杂，水质、水量变化剧烈等特点。因为印染废水属于难降解的废水，所以本设计采用水解酸化提高废水的可生化性。经过方案比选，本设计采用水解酸化-接触氧化-混凝工艺，其处理效果明显优于传统工艺，对BOD、COD、SS有很好的处理效果，并具有能耗低、产泥量少的特点，且剩余污泥可直接脱水。沉淀池后设置混凝沉淀池，作为三级处理，可获得较好的出水水质，使废水达标排放。经技术经济分析，此方案投资总额116万元，废水处理成本为0.64元/m3，有着良好的经济效益和社会效益。且节约用地、提高绿化、降低能耗的理念在设计中得到充分的实践，符合新时代环保的要求。关键词：印染废水水解酸化生物接触氧化混凝沉淀河海大学环境工程毕业设计第2页共66页5000m3/d印染废水处理工程设计AbstractInthisdesign,thescaleofsewagetreatmentistodisposewastewater5000m3/d,waterquality:COD900mg/Lto250mg/L,BOD,SS180mg/L,thecoloris400degrees,pH,NH3-Nis30mg/LWaterqualitycanmeettheemissionsrequirementsspecifiedinthetextileindustrystandardsforwaterpollutants(DB32/670-2004),thatofCOD≤100mg/LofBOD≤25mg/L,SS≤70mg/L,andchroma≤40degrees,pH6~9,NH3-N≤15mg/L.Highcolorprintinganddyeingwastewater,theCOD,highcontentofBOD,complexcomposition,waterqualityandquantityofrapidchangeandsoon.Dyeingwastewaterisbiodegradablewastewater,sothedesignusesahydrolysisacidificationtoimprovethewastewaterbiodegradability.Aftertheprogramthantheelection,thisdesignusesahydrolysisacidification-contactoxidation-coagulationprocess,thetreatmenteffectwasbetterthanthetraditionalprocess,BOD,COD,theSShasagoodtreatmenteffect,andhaslowenergyconsumption,sludgeproductionislessfeatures,andexcesssludgecanbedehydration.Setaftercoagulationandsedimentation,sedimentationtanks,asatertiarytreatment,toobtainbetterwaterquality,wastewaterdischargestandards.Technicalandeconomicanalysisofthisscenario,thetotalinvestmentof116millionwastewatertreatmentcostis0.64yuan/m3,hasagoodeconomicandsocialbenefits.Andlandconservation,andincreaseafforestation,theideaofreducingenergyconsumptioninthedesigntobefullypractice,inlinewiththerequirementsofaneweraofenvironmentalprotection.Keywords:printinganddyeingwastewater;hydrolysisacidification;biologicaloxidation;coagulationandsedimentation河海大学环境工程毕业设计第3页共66页5000m3/d印染废水处理工程设计目录第一篇设计说明书..................................................................51概述.........................................................................51.1设计任务...............................................................51.2设计依据...............................................................51.3区域概况...............................................................62污水处理方案设计.............................................................62.1规模与处理程度的确定...................................................62.2污水处理方案的确定.....................................................63污水处理厂工艺设计..........................................................113.1污水处理构筑物的设计..................................................113.2污泥处理系统设计......................................................184污水处理厂总体布置..........................................................194.1平面布置及总平面图....................................................194.2各构筑物高程布置......................................................215工程概算与成本分析..........................................................225.1工程概况..............................................................225.2编制依据..............................................................225.3编制原则..............................................................225.4投资概算..............................................................236厂区概况....................................................................236.1厂区污水..............................................................236.2噪声..................................................................236.3固体废弃物............................................................246.4安全生产和消防设施....................................................246.5经营管理..............................................................256.6人员编制..............................................................257结论及建议..................................................................258参考文献....................................................................26第二篇设计计算书.................................................................271设计资料....................................................................27河海大学环境工程毕业设计第4页共66页5000m3/d印染废水处理工程设计1.1设计题目和任务........................................................271.2设计进出水水质及处理程度..............................................271.3污水处理工艺流程......................................................282污水处理构筑物设计计算......................................................282.1格栅..................................................................282.2提升泵................................................................312.3调节池................................................................312.4水解酸化池............................................................332.5生物接触氧化池........................................................352.6竖流式沉淀池..........................................................402.7混凝反应池............................................................442.8混凝沉淀池.....