【正文】 布置； （ 2）水量計(jì)算，確定給水工程規(guī)模； （ 3）取水構(gòu)筑物的設(shè)計(jì)； （ 4）泵站設(shè)計(jì)（取水泵站與送水泵站選做一個(gè)）； （ 5）配水管網(wǎng)設(shè)計(jì)； （ 6）進(jìn)水廠工程設(shè)計(jì)； （ 7）投資估算（選做） 。 本計(jì)算說(shuō)明書(shū)主要說(shuō)明水廠常規(guī)處理構(gòu)筑物的選型、選擇依據(jù)、優(yōu)缺點(diǎn)、應(yīng)用條件以及具體構(gòu)筑物尺寸的計(jì)算 及管網(wǎng)平差計(jì)算 ；水廠構(gòu)筑物的平面布置和高程布置，并附有相應(yīng)的計(jì)算示例圖。這種常規(guī)的處理工藝之今 仍被世界大多數(shù)國(guó)家所采用，是目前飲用水處理的主要工藝。 另一方面，飲用水的安全問(wèn)題也很重要，人們對(duì)源水進(jìn)行一系列處理后飲用。手工計(jì)算十分繁瑣，而利用 C語(yǔ)言程序進(jìn)行管網(wǎng)流量初分和管網(wǎng)平差計(jì)算較為方便。 給水工程中管網(wǎng)的設(shè)計(jì)布置是極其重要的。 經(jīng)過(guò)凈水廠中各處理構(gòu)筑物處理后，出廠水能夠達(dá)到飲用水要求?；炷ɑ旌虾托跄齼刹糠?。由于水廠給水管網(wǎng)設(shè)計(jì)的是本次設(shè)計(jì)的難點(diǎn)同時(shí)也是設(shè)計(jì)的重點(diǎn)，其計(jì)算工作量大，計(jì)算過(guò)程比較繁瑣，所以采用 C 語(yǔ)言編制的管網(wǎng)平差程序進(jìn)行計(jì)算，大大提高了計(jì)算速度和計(jì)算結(jié)果的精確度。根據(jù)水位變化情況，采用固定式取水構(gòu)筑物。目 錄 目錄 …………………………………………………………………………………………… 1 中文摘要 ……………………………………………………………………………………… 2 英文摘要 ……………………………………………………………………………………… 3 1 緒 論 .................................................................................................................................... 3 2 概 述 .................................................................................................................................... 4 畢業(yè)設(shè)計(jì)的主要內(nèi)容與基本要求 ..................................................................................... 4 畢業(yè)設(shè)計(jì)成果 ..................................................................................................................... 4 設(shè)計(jì)緣由 ............................................................................................................................. 5 設(shè)計(jì)要求 ............................................................................................................................. 5 3 取水工程 .............................................................................................................................. 9 設(shè)計(jì)用水量的確定 ............................................................................................................. 9 取水裝置設(shè)計(jì) ................................................................................................................... 11 取水泵房 ........................................................................................................................... 14 4 凈水廠的設(shè)計(jì)與計(jì)算 ........................................................................................................ 18 概述 ................................................................................................................................... 18 水廠平面布置 ................................................................................................................... 18 混凝劑的選擇、溶解和投加 ........................................................................................... 19 混合 ................................................................................................................................... 22 絮凝 ................................................................................................................................... 23 沉淀 ................................................................................................................................... 32 濾池選用及適用條件 ....................................................................................................... 35 消毒方法的選擇 ............................................................................................................... 43 清水池 — 水量調(diào)節(jié)設(shè)備計(jì)算 ........................................................................................... 45 5 水廠系統(tǒng)布置圖 ................................................................................................................ 46 凈水廠系統(tǒng)區(qū)域地形圖設(shè)計(jì) ........................................................................................... 46 凈水廠總平面布置 ........................................................................................................... 46 凈水廠高程布置 ............................................................................................................. 48 6 配水管網(wǎng)設(shè)計(jì) .................................................................................................................... 50 管網(wǎng)定線 ............................................................................................................................ 50 管網(wǎng)流量計(jì)算 .................................................................................................................... 50 結(jié) 論 ........................................................................................................................................ 75 致 謝 ........................................................................................................................................ 76 參 考 文 獻(xiàn) ............................................................................................................................ 77 1 某城市給水工程 摘要 ： 本次設(shè)計(jì)為某城市給水工程設(shè)計(jì)，設(shè)計(jì)內(nèi)容主要包括三部分，即取水工程設(shè)計(jì)、給水管網(wǎng)設(shè)計(jì)和凈水廠設(shè)計(jì)。根據(jù)設(shè)計(jì)資料，本次只進(jìn)行二水廠設(shè)計(jì)，二水廠取水河流為 率水，取水地點(diǎn)位于河流彎道凹岸。又因月平均流量變化較大，故采用岸邊式取水構(gòu)筑物。凈水廠處理工藝采用常規(guī)處理，即“混凝 —— 沉淀 —— 過(guò)濾 —— 消毒”?；旌鲜窃陟o態(tài)混合器中投加聚合氯化鋁，絮凝設(shè)備選用折板絮凝池，選用斜管沉淀池進(jìn)行沉淀，過(guò)濾設(shè)備采用普通快濾池，最后投加液氯進(jìn)行消毒。 關(guān)鍵 詞 ： 管網(wǎng)平差，取水工程，凈水廠設(shè)計(jì) 2 Abstract: This design is the water supply engineering of a city. It mainly includes three parts: the intake works, the water pipe work design and the water treatment plant design. The given information is as follows: intake water from Shuishui water, take water from the inner bank and the water level changes every month a lot. So I choose the water intake. The water pipe work design is mainly based on the geography chart of the city and the positions of the big water consumers. After arranging the water pipe , distributing flow initially, small pipe was used with the aim of reducing the cost of the pipe work. In order to satisfy the request of customer to the water quantity, the water quality and the water pressure, the pipeoptimize program is written. The process craft in the water treatment plant uses conventional process,that is coagulation includes the mixing and flocculating processes, and mixing is to add PAC in the static state mixture machine. The process of flocculation carries on in the grid flocculating tank. S