【正文】 h a lot of advantages,such as being easy to manage,flexible operational ways,good disposed effect,and good nitrogen removal is suitable for small and midscale municipal wastewater treatment plants because of its low investment and operational cost .The processing has been successfully applied for actual engineering practice,and has good economic,environmental and social efficiency. XX 大學(xué)本科畢業(yè)設(shè)計 第 VI 頁Municipal wastewater is allowed to discharge after meeting the first degree of integrated wastewater discharge standard（GB8978－1996） ，COD＜60mg/L ，BOD＜20 mg/L， TP＜ mg/L，NH 3N＜15 mg/L.key words： Municipal wastewater；Aerated Grit Chamber ；CASS process；Nitrogen removal；removal efficiency XX 大學(xué)本科畢業(yè)設(shè)計 第 VII 頁目錄第一章 綜述 ........................................................................................................................1 我國城市污水處理概況 .................................................................................................1 城市污水來源 .................................................................................................................1 城市污水的水質(zhì) .............................................................................................................2 物理性質(zhì) ..................................................................................................................2 化學(xué)性質(zhì) ..................................................................................................................2 城市污水處理工藝綜述 .................................................................................................3 傳統(tǒng)活性污泥法及其變形 ......................................................................................3 氧化溝工藝及其變形 ..............................................................................................7 SBR 工藝及其變形 ...................................................................................................9. 工藝選擇 ......................................................................................................................12 選擇原因 ................................................................................................................12 CASS 工藝簡介 ......................................................................................................14第二章 設(shè)計任務(wù)及思路 ..................................................................................................16 城市污水基本情況 .......................................................................................................16 設(shè)計對象 ................................................................................................................16 進(jìn)水出水水質(zhì)指標(biāo) ................................................................................................16 水質(zhì)分析及處理思路 ...................................................................................................16 水質(zhì)分析 ................................................................................................................16 設(shè)計處理工藝流程 ................................................................................................16第三章 設(shè)計計算書 ..........................................................................................................19 設(shè)計依據(jù) .......................................................................................................................19 構(gòu)筑物設(shè)計計算 ...........................................................................................................19 粗格柵 ....................................................................................................................19 提升泵房 ................................................................................................................22 細(xì)格柵 ....................................................................................................................25 曝氣沉砂池 ............................................................................................................27 配水井 ....................................................................................................................32 CASS 生化反應(yīng)池 ..................................................................................................33 消毒池 ....................................................................................................................43 污泥濃縮池 ............................................................................................................45 脫水機(jī)房 ................................................................................................................47 XX 大學(xué)本科畢業(yè)設(shè)計 第 VIII 頁 高程布置 .......................................................................................................................49 構(gòu)筑物水頭損失 ....................................................................................................49 管道水力計算 ........................................................................................................49 污水處理高程布置 .................................................................................................50第四章 技術(shù)經(jīng)濟(jì)分析 ......................................................................................................51 工程造價估算 ...............................................................................................................51 編制范圍 ................................................................................................................51 編制依據(jù) ................................................................................................................51 費(fèi)用計算 ................................................................................................................51 運(yùn)行管理機(jī)制與運(yùn)行費(fèi)用 ...........................................................................................53 管理機(jī)制及人員編制 ....................