10万吨日城市生活污水卡鲁塞尔氧化沟处理厂的初步设计_毕业设计.docxVIP

10万吨日城市生活污水卡鲁塞尔氧化沟处理厂的初步设计摘要

本设计的任务是处理量10万吨/日城市生活污水处理厂的初步设计，采用卡鲁塞尔2000氧化沟二级生化处理工艺。该工艺对废水处理具有明显的技术优势，并且具有很强的抗冲击负荷能力，提高了BOD?的去除率，氧化沟出水经二沉池接触消毒后排放。预计本方案BOD?的去除率可达95%,SS的去除率可达90%。考虑到污泥机械脱水间的运行安全，将二沉池等处理构筑物的污泥一并浓缩后去机械脱水间脱水，经压滤后外运。并且该工艺运行稳定、管理方便、工程投资少、运营成本低。污水处理厂工程总投资12384万元，污水处理总成本2985万元/年，污水处理成本0.818元/立方米。污水处理厂出水水质：CODcr≤20mg/L,BOD?≤15mg/L,pH=6-9,SS≤20mg/L,NH?-N(10℃)≤5mg/L,TN≤12mg/L(10℃),出水排入C江。

关键词：城市污水Carrousel2000氧化沟工艺脱氮除磷工艺设计

Abstract

Thetaskofthisdesignistothepreliminarydesignof100,000tons/daycitylifesewagetreatmentplant,usecarrousel2000oxidationditchsecondarybiochemicalprocess.Theprocessonwastewatertreatmenthastheobvioustechnicaladvantage,andhasastrongimpactresistantloadability,hasimprovedBOD?,theoxidationditchremovalbythesecondpondwateraftercontactdisinfectionemissions.Theschemeisexpectedtotheremovalrateof95%BOD?,SShadto90%.Consideringthesludgedewateringofmechanicalsafetyoperation,betweensecondpondprocessingstructurestogetherafterthesludgeconcentrationtomechanicaldewateringpressurefiltrationdehydration,betweentheaftersinotrans.Andthisprocessstableinoperationandeasymanagement,engineeringlessinvestment,operationcostislow.Thissewagetreatmentplantengineeringtotalinvestmentis12384millionyuan,sewagetotalcostis2985,about0.818yuanperm3.Sewageeffluentis:CODcr

acuities20mg/L,morethan15mg/LBOD?,pH=6-9,SSacuities20mg/L,NH?-N(10℃)morethan5mg/L,TNacuities12mg/L(10℃),effluentintoCriver.

Keywords:UrbansewageCarrousel2000oxidationditchprocess

nitrogenandphosphorusremovalProcessDesign

目录

摘要 I

Abstract