毕业设计-废水处理AAO法计算书

漳州市东区污水处理厂工艺设计【摘要】本设计是位于福建省漳州市的漳州市东区污水处理厂工艺设计，随着社会进步，人们对于城市污水的处理的要求愈加严格。除了基本的去除污水中BOD和SS的要求外，通常还要求脱氮除磷，以保护水体环境。根据污水进水水质，以及所需要满足的出水要求，本设计即采用了众多脱氮除磷工艺中较为经济合理的AAO工艺对进入污水厂的污水进行处理。且该工艺对水质水量变化及冲击负荷适应性强、处理效果稳定可靠、运行模式灵活,可以实现不同运行工况，充分发挥各种处理工艺的特点,对污水进行有针对性的处理。设计污水处理厂日处理能力10万吨，有效去除水中BOD、SS以及氮、磷元素，出水质量将达到国家污水综合排放标准二级标准。本设计对污水处理厂处理流程、处理构筑物、以及高程进行了初步设计。【关键词】：A2/O，生物脱氮除磷，水污染治理，城市污水ThedesignofprocessofZhangzhouEastensewageplantAbstract:ThisdesignisasewagetreatmentplantwhichlocatedintheeastregionofZhangzhoucityofFujianprovince.Withsocialprogress,thedemandforpeople'streatmentofthemunicipalsewageisstricter.ExceptthedemandsofBODandSSinthesewage,demandofdenitrificationandphosphorousremovalyetusuallyactsasabasicone,inordertoprotectthewaterbodyenvironment.Accordingtothequalityofsewageanddemandofeffluent,wehaveadoptedA2／Ocrafttodealwiththesewagewhichentersthesewagefactoryinthisdesign.Also,antherreasonisthattheadaptabilityofqualityandquantity、impactloadoftheprocesswillbemuchbetter.And,thetreatmenteffectisstableandreliable.Withaflexibleoperationmode,youcanachievedifferentoperationconditionseasilyandgivefullplaytothecharacteristicsofthevarioustreatmentprocessesandtargetedprocessingofsewage.Thedesignofthissewagetreatmentplanthastheprocessingcapacityof100000tonsandtheeffectiveremovalofBODinwaterandtheSSaswellasnitrogen,phosphorus.And,thewaterqualitywillachievethesecondstandardsofthenationalwastewaterdischargestandards.ThispaperintroducestheprinciplesofbiologicalphosphorusandnitrogenremovalwiththeA2／OprocessanddescribestheflowchartofthisprocesswhichisthenanalyzedIndetail．Keyword:A2/O，biologicalphosphorusandnitrogenremoval，wastewatertreatmentmunicipalwastewater.目录1、选题背景.....................................................................................................................................................12、方案论证.....................................................................................................................................................12.1普通活性污泥法..............................................................................................................................12.2A/O生物脱氮活性污泥法..............................................................................................................12.3AB工艺...........................................................................................................................................22.4氧化沟法..........................................................................................................................................22.5SBR间歇时活性污泥法.................................................................................................................22.6A/A/O生物脱氮除磷工艺..............................................................................................................23、过程论述.....................................................................................................................................................34、设计资料.....................................................................................................................................................34.1水质、水量条件................................................................................................................................34.2气象资料............................................................................................................................................34.3地质资料............................................................................................................................................45、构筑物计算.................................................................................................................................................45.1粗格栅.................................................................................................................................................45.1.1设计说明.................................................................................................................................45.1.2设计参数选取.........................................................................................................................45.1.3设计计算.................................................................................................................................55.2细格栅.................................................................................................................................................85.2.1设计说明.................................................................................................................................85.2.2设计参数选取.........................................................................................................................85.2.3设计计算.................................................................................................................................85.3集水池..............................................................................................................................................125.3.1设计说明...............................