某中药厂生产废水处理工艺设计

/本科毕业论文（设计）设计题目：某中药厂生产废水处理工艺设计姓名：唐麟皓学号：103010040118年级：10级系部：食品工程学院专业：环境工程指导教师：余萃完成时间：2014.04.15作者声明本毕业论文（设计）是在导师的指导下由本人独立撰写完成的，没有剽窃、抄袭、造假等违反道德、学术规范和其他侵权行为。对本论文（设计）的研究做出重要贡献的个人和集体，均已在文中以明确方式标明。因本毕业论文（设计）引起的法律结果完全由本人承担。毕业论文（设计）成果归武昌工学院所有。特此声明作者专业：环境工程作者学号：103010040118作者签名：唐麟皓2014年4月15日某中药厂生产废水处理工艺设计唐麟皓WastewatertreatmentprocessdesignofafactoryoftraditionalChinesemedicineproductionTang,Linhao2014年4月15日摘要我国现有中药生产企业1059家，每年产生大量的生产废水，使中药废水成为医药工业排放的主要废水之一。它具有污染物含量高，成分复杂，水质波动较大，色度较深等特点，从而使得处理该种废水的难度增加。多年来，人们一直在寻求有效、经济的处理技术和工艺方法来解决中药废水的污染问题。研究结果和实际工程应用情况表明，对成分复杂多变的中药废水进行处理，采用单一的处理工艺是很难奏效的，需要多种工艺技术联合使用，同时要有较大的资金投入并支付较高的运行费用，这使得一些医药企业对该种废水的治理工作进展缓慢。本文运用气浮技术、生物厌氧技术和好氧技术，选用气浮--厌氧折板反应器反应器--序批式活性污泥反应器的处理工艺，以达到对中药废水生物处理的目的。加压溶气气浮法是以微小气泡为载体，粘附水中的杂质颗粒，颗粒被气泡挟带浮升至水面与水分分离去除的方法。能有效的去除中药废水中木质素等比重较小，极难重力沉降的悬浮物。厌氧折板反应器是在反应器内设置一系列垂直放置的折流挡板使废水在反应器内沿折流挡板上下折流运动，依次通过每个格室的污泥床直至出口，在此过程中废水中的有机物质与厌氧活性污泥充分接触而得到去除。序批式活性污泥法是在单一反应器内，按时间顺序进水、曝气、沉淀、出水、待机等基本操作，在池内交替形成厌氧、缺氧、好氧、厌氧的环境，在不同阶段，相应的微生物分解有机物，进行硝化、反硝化反应以及释磷、吸磷过程，达到去除有机物，脱氮除磷的目的。使废水的COD由2000mg/L降至100mg/L；BOD由1200mg/L降至20mg/L，达到国家污水综合排放标准一级水平关键词：中药废水；加压溶气气浮法；折板式厌氧反应器；序批式活性污泥法AbstractTraditionalChinesemedicineproductionenterprisesinChina1059,producelargeamountsofwastewatereachyear,thetraditionalChinesemedicinewastewaterhasbecomeoneofthemainwastepharmaceuticalindustrialemissions.Ithashighpollutantcontent,complexcomposition,waterqualityfluctuations,colorisdeepandothercharacteristics,sothatthetreatmentincreasedthedifficultyofthiskindofwastewater.Overtheyears,peoplehavebeeninthetreatmenttechnologyandprocesstoseekeffectivemethod,economytosolvetheproblemofpollutionoftraditionalChinesemedicinewastewater.Studiesshowthattheresultsandthepracticalengineeringapplication,wasusedinthetreatmentofwastewaterfromtraditionalChinesemedicinecomplexcomponent,thetreatmentprocessofsingleisverydifficulttobeeffective,requirethecombineduseofmultipletechnologies,andhavealargeamountofmoneyandpayhigheroperatingcosts,whichmakestheprogressmanagementofsomepharmaceuticalenterprisesofthiskindofwastewaterslow.Inthispaper,usingflotationtechnology,biologicalanaerobictechnologyandoxygentechnology,selectionoffloatatABRreactor--thesequencingbatchreactoractivatedsludgetreatmentprocess,inordertoachievethepurposeofbiologicaltreatmentofwastewaterfromtraditionalChinesemedicine.Pressurizeddissolvedairflotationisatinybubblesasthecarrier,impurityparticleadhesioninwater,theparticlesarebubbleentrainmentfloatingrosetothesurfaceandwaterseparationremovalmethod.CantraditionalChinesemedicinewastewaterligninremovalisobariclesseffective,andverydifficulttosuspendedsolidssedimentationofgravity.ABRisaseriesofverticalfractureinthereactorflowbaffleandthebaffleplateonthewaterbafflemovementalonginthereactor,followedbythesludgebedeachchamberuntiltheexport,wastewaterintheprocessoforganicmatterandanaerobicactivatedsludgefullcontactandremoval.Sequencingbatchreactoractivatedsludgeprocessisinasinglereactor,accordingtothetimesequenceofwater,aeration,precipitation,water,standbyandotherbasicoperations,alternatinganaerobic,anoxic,aerobic,anaerobicenvironmentinthepool,atdifferentstages,themicrobialdecompositionoforganicmatter,nitrification,denitrificationofreactionandreleaseofphosphorus,phosphorusuptake,toremovetheorganicmatter,nitrogenandphosphorusremoval.TheCODofthewastewaterfrom2000mg/Lto100mg/L;BODfrom1200mg/Lto20mg/L,uptothenationalintegratedwastewaterdischargestandardlevel.Keywords:traditionalChinesemedicinewastewater;pressurizeddissolvedairflotation;anaerobicbaffledreactor;sequencingbatchreactoractivatedsludgeprocess目录第1章引论...................................................................................................................71.1选题的意义...........................................................................................................7第2章新组合工艺的提出与分析...........................................................................82.1组合工艺的提出.................................................82.2水质分析及处理思路.............................................82.2.1水质分析.................................................82.2.2处理流程.................................................9第3章工艺设计.........................................................................................................113.1进水水量与水质................................................113.2处理要求......................................................113.3可生化性分析..................................................113.4工艺设计......................................................123.4.1格栅....................................................123.4.2调节池...................................................143.4.3气浮池...................................................153.4.4ABR厌氧池.............................................193.4.5SBR反应池..............................................203.5平面布置......................................................253.6高程布置......................................................263.7技术经济分析...................................................263.7.1设备管理劳动定员.........................................263.7