【正文】 ........ 1 城市污水來源 ......................................................................................... 1 設(shè)計(jì)的意義及指導(dǎo)思想 .......................................................................... 1 設(shè)計(jì)的意義 .......................................................................................... 1 指導(dǎo)思想 .............................................................................................. 2 國(guó)內(nèi)外發(fā)展概況 ...................................................................................... 2 AB 法 .................................................................................................... 2 A2/O 生物脫氮除磷工藝 ........................................................................ 2 氧化溝 工藝 .......................................................................................... 3 SBR 工藝 .............................................................................................. 3 CASS 工藝 ............................................................................................ 3 設(shè)計(jì)依據(jù)及原則 ...................................................................................... 3 設(shè)計(jì)依據(jù) .............................................................................................. 3 設(shè)計(jì)原則 .............................................................................................. 3 工程概況 ................................................................................................. 4 基礎(chǔ)資料 .............................................................................................. 4 水質(zhì)指標(biāo) .............................................................................................. 4 第二章 污水處理廠工藝方案 .................................................................. 5 北京理工大學(xué)珠海學(xué)院 2020 屆本科生畢業(yè)設(shè)計(jì)（論文） IV 設(shè)計(jì)方案論證 ......................................................................................... 5 原污水可生化性分析 .............................................................................. 5 工藝選擇及方案比選 .............................................................................. 6 A2/O 工藝 .............................................................................................. 6 氧化溝工藝及其變形 ............................................................................ 7 CASS 工藝 ............................................................................................ 9 確定工藝方案 .................................................................................... 12 設(shè)計(jì)思路 ............................................................................................ 12 處理程度計(jì)算 ....................................................................................... 14 CODcr 的處理程度 ............................................................................... 14 溶解性 BOD5 的處理程度 .................................................................. 14 SS 的處理程度 .................................................................................... 14 NH3N 的處理程度 .............................................................................. 14 TP 的處理程度 .................................................................................... 15 第三章 設(shè)計(jì)計(jì)算 .................................................................................... 16 粗格柵設(shè)計(jì)計(jì)算 .................................................................................... 16 設(shè)計(jì)說明 ............................................................................................ 16 柵條的間隙數(shù) .................................................................................... 16 柵槽寬度 ............................................................................................ 16 進(jìn)水渠道漸寬部分的長(zhǎng)度 .................................................................. 17 柵槽與出水渠道連接處的漸窄部分長(zhǎng)度 ........................................... 17 過柵水頭損失 .................................................................................... 17 北京理工大學(xué)珠海學(xué)院 2020 屆本科生畢業(yè)設(shè)計(jì)（論文） V 柵后槽總高度 .................................................................................... 18 柵槽總長(zhǎng)度 ........................................................................................ 18 每日柵渣量計(jì)算 W ............................................................................ 18 泵站的設(shè)計(jì)計(jì)算 .................................................................................... 18 水泵選型 ............................................................................................ 18 集水池 ................................................................................................ 21 細(xì)格柵設(shè)計(jì)計(jì)算 .................................................................................... 21 設(shè)計(jì)說明 ............................................................................................ 21 柵條的間隙數(shù) .................................................................................... 22 柵槽寬度 ............................................................................................ 22 過柵水頭損失 .................................................................................... 23 柵后槽總高度 .................................................................................... 23 柵槽總長(zhǎng)度 ........................................................................................ 24 每日柵渣量計(jì)算 W ........................................................................... 24 沉砂池的選擇計(jì)算 ................................................................................ 24 沉砂池的選擇 .................................................................................... 24 沉砂池設(shè)計(jì)計(jì)算一般規(guī)定 .................................................................. 25 設(shè)計(jì)參數(shù) ............................................................................................ 25 設(shè)計(jì)計(jì)算 ............................................................................................ 25 配水井的設(shè)計(jì) ....................................................................................... 26