城市污水处理工艺得设计 摘 要该毕业设计得题目为 5 万吨/天城市污水处理工程设计,应用得处理工 艺 为 AAO 工 艺 , 具 有 脱 氮 除 磷 得 效 果 。 进 水 水 质 为 CODCr =300mg/L，BOD5 =250mg/L,SS =200mg/L，TN = 30mg/L,TP=6 mg/L ， pH=7、0～8、5，出水水质为 CODCr≤100mg/L，BOD5≤20mg/L,SS≤20mg/L,TN≤15mg/L， TP≤1 mg/L,达到污水排放二级标准。根据毕业设计得原始资料及设计要求对出水水质得要求:及要求脱氮除磷，确定 A2/O 与氧化沟、SBR、AB 法污水处理工艺进行设计与经济技术比较。通过投资概算,运行费用得计算,经济比较及技术比较等最总确定 A2/O 工艺为最佳方案。该污水厂得处理流程为:从粗格栅到泵房到细格栅到沉砂池，进入反应池，进入辐流式二次沉淀池,再进入消毒池，最后出水;从反应池排出得剩余污泥集中输送到污泥浓缩池，由剩余污泥泵直接输送到污泥脱水房脱水,最后外运处置。关键词：A2/O 工艺 脱氮除磷 污水处理AbstractThe subject of graduation is 5104 tons/day of municipal wastewater treatment engineering design,Process the application process for the AAO,Has the effect of nitrogen and phosphorus removal、Influent water quality is CODCr = 300mg / L，BOD5 =250mg / L， SS = 200mg / L, TN = 30mg / L， TP = 6 mg / L， pH = 7、0 ~ 8、5，Effluent water quality is CODCr≤100mg/L,BOD5≤20mg/L,SS≤20mg/L,TN≤15mg/L，TP≤1mg/L,to secondar effluent standards、According to the primitiv data of the graduation project and demanding for water quality :Campare A2/O craft with oxidize ditch craft ，SBR craft,AB craft and choose the better one from two major sewage disposal craft 、 Through the budgtary estimating of investment,operating the calcuiation of the expenses,paring of conomy and technology ect，finally we have the A2/O ditch is the best scheme、The sewage treatment plant process is: from coarse to fine grid to the grid to pump grit chamber,Into the reaction pool,Radial flow into the secondary sedimentation tank,Re-ente...
