齐齐哈尔大学毕业设计（工程设计）1摘要本次设计题目是黑龙江省某甜菜制糖企业40000t/a生产废水处理工艺初步设计，设计规模为40000t/a，原水水质为CODCr≤2500mg/L，BOD≤1300mg/L，SS≤300mg/L。要求处理后的水质达到CODCr≤100mg/L，BOD≤70mg/L，SS≤70mg/L，执行中华人民共和国国家标准《污水综合排放标准》（GB8978-1996）中一级排放标准。依据该甜菜糖厂的水质水量特点及废水处理技术现状、排放标准，确定采用工艺流程为：废水—格栅—调节池—酸化池—氧化沟—沉淀池—污泥池—污泥回流—污泥排放采用该工艺总投资为746.39万元，废水处理成本为0.354元。采用氧化沟工艺可有效地保护周边水环境，而且该工艺还有易于管理等优点。关键词：甜菜糖厂废水；氧化沟；沉淀池；污泥；污水处理齐齐哈尔大学毕业设计（工程设计）2AbstractThetopicofthisdesignisabeetsugarenterprisesinHeilongjiangProvince40000t/preliminarydesignofawastewatertreatmentprocess,designedcapacityof40000t/a,rawwaterqualityCODCr≤2500mg/LBOD≤1300mg/L,SS≤300mg/L.RequiredtodealwiththewaterqualityofCODCr≤100mg/L,BOD≤70mg/L,SS≤70mg/L,theimplementationoftheNationalStandardofthePeople'sRepublicofChina"IntegratedWastewaterDischargeStandard(GB8978-1996)emissionstandards.Basedonthequalityandquantitycharacteristicsofsugarbeetandwastewatertreatmenttechnologystatus,emissionstandards,determinetheuseofprocess:Wastewater-grill-regulationpool-biologicalselectionpool-OxidationDitch-sedimentationtank-watersedimentationtank-slugetank-returnsludge-sludgedischarge.Theprocessusesatotalinvestmentof7,463,900yuan,0.356yuancostofwastewatertreatment.Byoxidationditchprocesscaneffectivelyprotectthesurroundingwaterenvironment,andtheprocessisalsoeasytomanageandsoon.Keywords:Beetsugarfactorywastewater;Oxidationditch;Sedimentationtanks;Sludge;Sewagetreatment齐齐哈尔大学毕业设计（工程设计）3目录摘要........................................................................................................................................ⅠAbstract....................................................................................................................................Ⅱ第一章设计概论..................................................................................错误！未定义书签。1.1绪论..........................................................................................错误！未定义书签。1.2城市概况及自然条件..............................................................错误！未定义书签。1.2.1自然资料........................................................................错误！未定义书签。1.2.2设计依据........................................................................错误！未定义书签。1.2.3设计水量........................................................................错误！未定义书签。1.2.4设计进水水质................................................................错误！未定义书签。1.2.5处理后的排放水质........................................................错误！未定义书签。1.3生产废水来源及水质水量......................................................错误！未定义书签。1.3.1甜菜生产概况................................................................错误！未定义书签。1.3.2甜菜制糖厂的废水处理难点........................................错误！未定义书签。1.3.3生产废水水质................................................................错误！未定义书签。1.3.4设计水质水量................................................................错误！未定义书签。1.4糖废水处理常用的工艺.........
