【正文】 畢 業(yè) 設(shè) 計 蘭棱鎮(zhèn) 給水系統(tǒng)初步設(shè)計 (絮凝沉淀池 — 斜管沉淀池— 雙閥濾池 — 清水池 ) 年級： 2021 級 專業(yè)： 給排水工程 學(xué)號： 姓名： 指導(dǎo)教師： 評閱人： 二〇一〇 年 六 月 摘要 ................................................................................................................................. 1 ABSTRACT..................................................................................................................... 2 第一篇 說明書 ................................................................................................................. 1 1 概述 .............................................................................................................................. 1 1． 1設(shè)計 依據(jù) ........................................................................................................... 1 1． 2給水工程規(guī)模數(shù)據(jù) ............................................................................................. 1 1． 3供水規(guī)模預(yù)測基本數(shù)據(jù)： .................................................................................. 1 1． 4設(shè)計的要求 ....................................................................................................... 2 2 設(shè)計的原始資料 ............................................................................................................ 3 2． 1項目背景 ........................................................................................................... 3 2． 2城市概況 ........................................................................................................... 3 2． 3工程設(shè)計標準 .................................................................................................... 5 2． 3． 1水量、水質(zhì)和水壓目標 ......................................................................... 5 2． 3． 2環(huán)境保護目標 ....................................................................................... 5 3 給水工程設(shè) 計 ................................................................................................................ 5 3． 1用水量計算 ....................................................................................................... 5 3． 2給水水源的選擇 ................................................................................................ 6 3． 3廠址選擇 ........................................................................................................... 6 3． 4凈水方案的比較和選擇 ...................................................................................... 6 3． 4． 1凈水方案 .............................................................................................. 6 3． 4． 2方案比較 .............................................................................................. 6 3． 4． 3方案綜合比較 ....................................................................................... 9 3． 5輸水管和給水管網(wǎng) ............................................................................................. 9 3． 5． 1管網(wǎng)系統(tǒng)的布置原則 ............................................................................. 9 3． 5． 2管網(wǎng)布線和方案比較 ........................................................................... 10 3． 5． 3方案比較 ............................................................................................ 11 3． 5． 4輸水管渠 ............................................................................................ 11 3． 6取水構(gòu)筑物 ..................................................................................................... 12 3． 6． 1取水位置的選擇 .................................................................................. 12 3． 6． 2取水構(gòu)筑物的選型 .............................................................................. 13 3． 6． 3取水頭部的選擇 .................................................................................. 13 3． 6． 4自流管取水 ......................................................................................... 13 3． 6． 5格柵 ................................................................................................... 14 3． 6． 6平板格網(wǎng) ............................................................................................ 14 3． 7凈水廠 ............................................................................................................ 14 3． 7． 1混凝劑和助凝劑的投配 ....................................................................... 14 3． 7． 2機械混合池 ......................................................................................... 16 3． 7． 3機械絮凝池 ......................................................................................... 16 3． 7． 4斜管式沉淀池 ..................................................................................... 19 3． 7． 5 雙閥濾池 ............................................................................................ 22 3． 7． 5清水池 ................................................................................................ 28 3． 7． 6加氯 ................................................................................................... 29 3． 7． 7一級泵房設(shè)計 ..................................................................................... 31 3． 7． 8 二級泵房 ............................................................................................ 33 3． 7． 9水廠平面和高程布置 ........................................................................... 38 4 投資估算 ..................................................................................................................... 39 4. 1工程概況 .......................................................................................................... 39 4. 2管道工程造價估算 ............................................................................................ 40 4. 3給水廠造價估算 ................................................................................................ 40 4. 4整套工程造價估算 .