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西安城市污水处理厂污泥组成特性及用于普通制砖处置的可行性研究

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本研究根据西安市污水处理现状与规划,确定了合理的污泥处理规模!污泥处置 工艺方案和污泥处置厂厂址,经过充分比较论证,推荐了处置效果好!运行稳定!技 术先进!节能与投资运行成本低的处理方案,使工程获得最佳的环境效益!社会效益 与经济效益具体研究成果如下: 根据西安市邓家村污水处理厂污泥实际产量,在理论计算和统计资料的基础上, 确定西安市污水处理厂污泥产量为1.4吨干泥/l04m3水截至2007年,西安市目前己建 成邓家村和北石桥污水处理厂两座,正在建设西安市第三!四污水处理厂,规划建设 袁乐村污水处理厂,通过计算分析,污泥处置项目分期建设规模为:近期(2008年) 建设规模为20Ot/d(P=80%);中期(2010年)建设规模为1000润(P=80%);远期 (2020年)建设规模为2000此(P二80%)根据西安市污泥处理及处置规划,西安 市污水处理厂的污泥建议采用利用污泥制作建材的处理方式经过考察,将西安市污 水厂污泥处理项目厂址选定在狄寨源雄奇制砖厂 根据西安市污水处理厂污泥泥质特性,结合国内外污泥处理处置现状和发展趋 势,对污泥处理处置的技术路线和经济性进行了综合分析,确定了近期生产烧结砖! 远期生产园林绿化用肥的最终处置方法和污泥资源化利用方向工艺流程主要为:除 臭*重金属毒性稳定*干化灭菌!建材利用 本工程一期总投资1785.90万元污泥处理厂单位处理成本为140.08元,建设运营 方提供运行费用195元/吨(80%含水率污泥),可实现一定利润 关键词:污泥处置;建设规模;厂址选择;处理工艺;经济性西安建筑科技大学硕士报告 SludgeCharacteristiesfromWasterwaterTreatmentPlant inXi.anandFeasibilityofBriek-making Major:EnvironlnentalEngineering M.D.Candidate:Liyan SuPervisor:Prof.WangLei Abstract AeeordingtothestatusandPlanningofsewagetreatmentinXi,an,determineda reasonablesizeofsludgetreatment,sludgedisPosalProeessandsludgedisPosalPlantsite Progr田叮5.AfterthorougheomParisons,asolution15recorrunendedwhiehhasbetter disPositioneffeetsandadvaneedteehnologiesandlowandinvestlnenteost,and15stable, andenergy一saving.ItenablestheProjeettogetthebestenvironmental,soeialand eeonomiebenefits. AeeordingtotheactualoutPutsofsewagetreatmentPlantatDen自iaVillageofXi,an, thesludgeProductionofsewagetreatmentPlant15madesuretobe1.4tonsofdrysludge 加m104m3orwastewaterinxi,an,basedontneoretie叔e己eulatingandtnestatisties. Currently,twosewagetreatmentPlantshavebeenbuilt,Den自iaVillagesewagetreatmeni PlantandBeishiqiaosewagetreatmentPlant.ThethirdandfourthsewagetreatmentPlants areundereonstruction,andYuanleVillagesewagetreatmentPlant15beingPlannedtobe built.Throughtheeaieulationandanalysis,sludgedisPosalProjeeteonstruetionseale Phasesareasfollows:recently(2008)sealeofeonstruetion15200t/d(P=80%);medium term(2010)sealeofeonstruetion151000t/d(P=80%):long一term(2020)sealeof eonstruetion152000t/d(P=80%). AecordingtothesludgetreatmentanddisPosalPlarming,Xi,ansewagetreatment Plantsludge15advisedtousethewayofmakingsludgebethebuildingmaterials AftereomParison,thethirdloeation15recommendedandXi,ansewagesludge treatmentProjeetwillstartinXiongqibriekfaetoryofDizhai抖an. AeeordingtoXi,ansewagetreatmentPlantsludgemudfeatures,eombinedwith西安建筑科技大学硕士报告 domestiestatusanddevelopmenttrendofsewagesludgetreatnlentanddisPosal,sludge treatme爪anddisPosalroutesandeeonomyareeomPletelyanalyzed.ThensludgedisPosal methodsandresoureeutilizationdireetionofthereeentProductionofsinteredbriek, long一termProduetionofthefinallandseapingfertilizereomeout.Proeess15maiuly: deodorant叶heavymctaltoxicityandstabilitv叶dryingsterihzation叶buildingmaterials. ThetotalinvestmentofthisProjeet1517.859millionyuan.TheeostoftheSludge treatmeniPlant15140.08yUanPerton.TheProjeeteonstructionandoPerationProvidesthe oPeratingeostsof195yUanPerton(moistureeontentofsludge1580%).Iteangetsome Profit. Keywords:sludgedisPosal;thesealeofeonstruetion;loeationseleetion lreatmeniProcesses;economy西安建筑科技大学硕士报告 目录 1绪论...........00....0.0.0..000,/0.....//.0/.../0.0/.00.,~.1 1.1引言.....................................................................................................................1 1.2污泥成分及性质...........................................................................2 1.2.1污泥的化学性质...........................................!..............#.2 1.2.2污泥的微生物学特性...............................................#6 1.3污泥处理工艺概述...................................................................,#8 1.3.1污泥土地利用..............................................................,............#...#8 1.3.2污泥卫生填埋....................................................,..................#10 1.3.3焚烧..........................................................,...........................................11 1.3.4污泥投海.................................................,............................................12 1.3.5污泥综合利用............................................................................................12 1.4国外污泥处置现状及发展趋势.......................................................................14 1.5国内污泥处置现状及发展趋势.......................................................................16 1.6项目来源!研究目的和研究内容...................................................................18 1.6.1项目来源....................................................................................................18 1.6.2研究目的,...................................................................................................18 1.6.3研究内容....................................................................................................18 2建设规模和处理要求二//~./.000000/00.//00,00#//~#000~#0#0,00#0一0二000#00#20 2.1建设规模的确定...........................................................................................20 2.1.1污泥产量计算分析......................................................,........,........20 2.1.2污水污泥产泥率的确定.............................................................!........20 2.1.3污泥量预测与建设规模的确定................................................................21 2.2污泥处置程度与要求.....................................................23 2.2.1西安市污水处理厂污泥泥质检测与分析..................-........,........23 2.2.2污泥卫生排放标准....................................................................................26 2.2.3污泥处理程度.!......,.......................................................................27 3污泥处理厂厂址选择.000./0000.../0.0,00..,/./.0........./,~,0/,.28西安建筑科技大学硕士报告 3.1厂址选择原则...................................................................................................28 3.2厂址选择方案比较...............,....................,................................,...28 3.3厂址所在地区的概况.......................................................................................29 3.4厂址自然概况...................................................................................................30 3.4.1气象条件....................................................................................................30 3.4.2地震设防烈度............................................................................................30 3.4.3水资源环境...................................................,.....................................,二30 3.5供电!给排水条件.............................................................................................30 3.6厂址综合评价.....................................................................................................30 4污泥处理处置厂设计二/二/./.0一~.////0.000,0//.000.00.///00/.0一/.000一~.,.31 4.1工艺设计..........,..........................................................................................31 4.1.1处理工艺流程............................................................................................31 4.1.2工艺说明....................................................................................................31 4.1-3工艺参数及物料平衡................................................................................32 4.1.4主要单体的设计........................................................................................33 4.2总图设计...........................................................................................................35 4.2.1污泥处理厂平面布置原则........................................................................35 4.2.2厂区地面平面布置................................................................................35 4.2.3厂区地面高程设计....................................................................................35 4.2.4厂区布置技术经济指标............................................................................36 4.3建筑设计................................,....................................................................36 4.3.1方案概况....................................................................................................36 4.3.2总体布局....................................................................................................36 4.3.3新建筑方案构思.............,....................................................................37 4.3.4新建筑造型................................................................................................37 4.3.5新建筑装修标准.............,....................................................................37 4.3.6建筑通风!空调设计................................................................................37 4.3.7噪声控制.........................,...............................................,..............38 4-3.8环境美化和绿化方案!.,..,.!二-...................................38 4.4辅助设施................................................,................................................38 4.4.1运输............................................................................................................38西安建筑科技大学硕士报告 4.4.2化验分析.,..................................................................................................39 4.5西安污泥处理处置厂污泥制砖生产线生产方案及工程估算.......................39 4.5.1生产及产品规格........................................................................................39 4.5.2生产工艺方案,.....................................................................................40 4.5.3生产线费用估算........................................................................................45 S设备清单及建构筑物尺寸./一.一.一00.0/.一..,~.一0.0./一0一00..0一一0~0.0~~一46 5.1设备选型原则........................................................................................#46 5.2主要设备表....,.............................,..................................................#.....46 5.3主要建构筑物尺寸...........,......................................,47 6环境保护,0./.,00.0,0.0.,/.,0.00.0/~.0.0.,/.0.0.0~二/一0.000:.0./0一一/0./,.48 6.1设计采用的环境保护标准....................................................................!....48 6.2主要污染源分析...................................................................................#..#一48 6.3污染物消减情况.........................................................................#.......49 6.4二次污染的防治对策及建议...........................................................................49 6.5除臭...................................................................................................................49 6.5.1臭味对环境的影响....................................................................................49 6.5.2除臭的方法.......................................................................#50 6.5.3除臭措施............................................................................................50 6.6毒性稳定...........................................................................................................51 6.7污水处理...........................................................................................................51 7节能,~.00,0..,0,0/.一.,0/././.0/.000./0.~二0~.,0.0./一00.0,/00./00.0/:.00.,.52 7.1物耗内容...............................................!.....................................................52 7.2节能措施...........................................................................................................52 7.3节水措施...............................................................-.....................................52 8风险分析.0.,0./.0二~.0././/.0.,0,0,00.0./0.0.0.0/.0./0.000.,0/,/一0.0.,.53 风险问题提出...................................................................................................53 风险因素确定及其问题的解决.......................................................................53 8.2.2 污泥重金属无害化处理............................................................................53 污泥卫生指标(病原体和寄生虫卵)........,.....................................53西安建筑科技大学硕士报告 8.2.3 8.2.4 恶臭.....................................................................................,.,..............54 污泥砖应用要求..........................................,...................................54 9工程投资估算与资金筹措././.0.一一/00一0./.000一~.//0.0/0/0000一~0/0~一//,.55 9.1编制依据...........................................................................................................55 9.2其他工程费用和取费标准...............................................................................55 9.3污泥处理厂投资估算.......................................................................................56 9.4投资计划与资金筹措.......................................................................................56 10工程经济评价,/0/00000二/.一一0.0:.0.0/.0./.0/00/00///..,~.000/0./00/.00,.57 10.1经济评价依据.................................................................................................57 10.2财务评价.................................................,...........................................,..,57 10.2.1基础数据..................................................................................................57 10.2.2年污泥处理收费收入估算............,.,.................................................58 10.2.3利润预测..................................................................................................58 10.3财务评价结论.................................................................................................58 11结论和建议二//,00000/一/00..一00//.00.0~.000一00/0.00///.00~.00///....一59 11.1结论..................................................................................................,........59 H.2建议.......,.,.............,.............................................................................59 6l像致