【正文】 1 目 錄 1 概述 .................................................................... 1 設(shè)計(jì)任務(wù) .......................................................... 1 設(shè)計(jì)要求 .......................................................... 1 污水處理廠設(shè)計(jì)原則 .......................................... 1 污水處理工程運(yùn)行過(guò)程中應(yīng)遵循的原則 .......................... 1 工程概況 .......................................................... 2 建設(shè)規(guī)模、廠址和污水水質(zhì) .......................................... 2 污水處理廠建設(shè) 規(guī)模 .......................................... 2 污水水質(zhì) .................................................... 2 2 工藝比較分析 ............................................................ 3 污水處理工藝比較 .................................................. 3 污泥處理工藝 ...................................................... 4 3 設(shè)計(jì)參數(shù) ................................................................ 5 設(shè)計(jì)流量 .......................................................... 5 進(jìn)出水水質(zhì) ........................................................ 5 4 設(shè)計(jì)計(jì)算 ................................................................ 5 泵前粗格柵 ........................................................ 5 設(shè)計(jì)參數(shù) .................................................... 5 泵前粗格柵設(shè)計(jì)計(jì)算 .......................................... 7 污水提升泵房 ...................................................... 9 泵房設(shè)計(jì)計(jì)算 ................................................ 9 泵房形式及其布置 ............................................ 9 細(xì)格柵 ............................................................ 9 設(shè)計(jì)參數(shù) .................................................... 9 細(xì)格柵設(shè)計(jì)計(jì)算 ............................................. 10 集配水井的設(shè)計(jì)計(jì)算 ............................................... 11 集配水井中心直徑 ........................................... 11 配水井直徑 ................................................. 11 2 集水井直徑 ................................................. 12 進(jìn)水管管徑 ................................................. 12 出水管管徑 ................................................. 12 總出水管 ................................................... 12 旋流式沉砂池 ..................................................... 12 A2/O 工藝池 ...................................................... 13 污水的特性指標(biāo) ............................................. 13 首先判斷是否可采用 A2/O 法 .................................. 14 設(shè)計(jì)參數(shù)計(jì)算 ............................................... 14 內(nèi)回流比 ................................................... 14 A2/O 反應(yīng)池容積計(jì)算 ........................................ 15 進(jìn)出水系統(tǒng) ................................................. 17 其他管道設(shè)計(jì) ............................................... 18 剩余污泥量 ................................................. 18 曝氣系統(tǒng)設(shè)計(jì)計(jì)算 ........................................... 19 厭氧池設(shè)備選擇 (以單組反應(yīng)池計(jì)算 ) .......................... 23 混合液回流設(shè)備 ............................................ 24 二次沉淀池 ....................................................... 24 池型選擇 ................................................... 24 設(shè)計(jì)參數(shù) ................................................... 24 沉淀池表面積 ............................................... 25 沉淀池直徑 ................................................. 25 沉淀池有效水深 ............................................. 26 徑深比 ..................................................... 26 沉淀部分有效容積 ........................................... 26 污泥部分所需容積 ........................................... 26 污泥斗容積 ................................................. 26 污泥斗以上圓錐部分污泥容積 ................................ 27 沉淀池總高度 .............................................. 27 進(jìn)水管的計(jì)算 .............................................. 27 3 進(jìn)水豎井計(jì)算 .............................................. 28 穩(wěn)流筒計(jì)算 ................................................ 28 出水槽計(jì)算 ................................................ 28 出水堰計(jì)算 ................................................ 29 出水管 .................................................... 30 排泥裝置 .................................................. 30 機(jī)械絮凝池的設(shè)計(jì)計(jì)算 ............................................. 30 設(shè)計(jì)依據(jù) ................................................... 30 設(shè)計(jì)參數(shù) ................................................... 31 設(shè)計(jì)計(jì)算 ................................................... 31 普通濾池的設(shè)計(jì) ................................................... 34 設(shè)計(jì)依據(jù) ................................................... 34 設(shè)計(jì)依據(jù) ................................................... 35 設(shè)計(jì)計(jì)算 ................................................... 35 消毒設(shè)施 ........................................................ 38 消毒劑的選擇 .............................................. 38 消毒劑的投加 .............................................. 39 平流式消毒接觸池 .......................................... 40 計(jì)量設(shè)備 ........................................................ 42 計(jì)量設(shè)備選擇 .............................................. 42 巴氏計(jì)量槽設(shè)計(jì) ............................................ 43 5污泥處理構(gòu)筑物計(jì)算 ..................................................... 46 剩余污泥量計(jì)算 ................................................... 46 曝氣池內(nèi)每日增加的污泥量 ................................... 46 曝氣池每日排出的剩余污泥量 ................................. 47 污泥泵房設(shè)計(jì)計(jì)算 ................................................. 47 回流污泥泵設(shè)計(jì) ............................................. 47 剩余污泥泵設(shè)計(jì) ............................................. 47 集泥池設(shè)計(jì) ................................................. 48 污泥濃縮池 ....................................................... 48 4 設(shè)計(jì)參數(shù) ................................................... 48 沉淀部分有效容積 ........................................... 48 濃縮池直徑 ................................................. 49 濃縮池的容積 ............................................... 49 濃縮池有效水深 ............................................. 49 濃縮后剩余污泥量 .........................