【正文】 右。根據(jù)該市的總體規(guī)劃，近期（ 2021 年）該城區(qū)總?cè)丝跒?5 萬(wàn)人，遠(yuǎn)期（ 2025年）該城區(qū)總?cè)丝跒? 萬(wàn)人。 通過(guò)畢業(yè)設(shè)計(jì)，我們 能夠熟悉并掌握污水處理廠的設(shè)計(jì)內(nèi)容、設(shè)計(jì)原理、方法和 步驟，能根據(jù)設(shè)計(jì)原始設(shè)計(jì)資料正確地選定設(shè)計(jì)方案，掌握污水廠設(shè)計(jì)的基本流程及各構(gòu)筑物的設(shè)計(jì)方法，熟悉設(shè)計(jì)計(jì)算書和設(shè)計(jì)說(shuō)明書的編寫內(nèi)容和編制方法，并繪制工程圖紙。全國(guó)百分之九十以上的城市水域受到不同程度的污染，將近一半的重點(diǎn)城鎮(zhèn)的集中飲用水源不 符合取水標(biāo)準(zhǔn)。雖然我國(guó)水資源總量非常豐富，居世界第六位，但由于人口眾多，人均占有僅為 2262 立方米，約為世界平均的四分之一，屬于世界缺水國(guó)家之一。 關(guān)鍵詞： 城市污水 ； 卡羅塞爾氧化溝 ； 脫氮 除磷 II Abstract This project is a design for sewerage engineering of Ruian City, Zhejiang Province, the major task is plete the design of rainwater and wastewater pipe and wastewater treatment plant. The wastewater treatment plant’s short term scale is 18100 t/d, and the long term scale is 26700 t/d. The primary water quality is presented as following: BOD5 = 190 mg/L, CODcr = 330 mg/L, SS = 220mg/L, NH3N =40 mg/L, TP =6 mg/L。 該污水處理廠處理規(guī)模：近 期 萬(wàn)噸 /天，遠(yuǎn)期 萬(wàn)噸 /天 。目 錄 摘要 ..........................................................................................................................................................................................I Abstract .................................................................................................................................................................................. II 1 緒論 ..................................................................................................................................................................................... 1 2 設(shè)計(jì)說(shuō)明書 .......................................................................................................................................................................... 2 設(shè)計(jì)依據(jù) ...................................................................................................................................................................... 2 原始資料 ...................................................................................................................................................................... 2 地 理位置與工程背景 ............................................................................................................................................ 2 自然資料 ............................................................................................................................................................... 3 水系 ....................................................................................................................................................................... 3 污水管網(wǎng)設(shè)計(jì) ............................................................................................................................................................... 3 排水系統(tǒng)體制的選擇 ............................................................................................................................................ 3 設(shè)計(jì)流量計(jì)算 ........................................................................................................................................................ 3 污水管網(wǎng)定線 ........................................................................................................................................................ 4 污水管網(wǎng)水力計(jì)算 ................................................................................................................................................ 5 雨水管網(wǎng)設(shè)計(jì) ............................................................................................................................................................... 6 設(shè)計(jì)流量計(jì)算 ........................................................................................................................................................ 6 雨水管網(wǎng)定線 ........................................................................................................................................................ 8 污水處理廠設(shè)計(jì) ........................................................................................................................................................... 8 設(shè)計(jì)水質(zhì) ............................................................................................................................................................... 9 處理程 度的計(jì)算 .................................................................................................................................................... 9 工藝流程的確定 ................................................................................................................................................... 10 污水處理構(gòu)筑物設(shè)計(jì)說(shuō)明 ................................................................................................................................... 13 污水廠平面布置 .................................................................................................................................................. 18 污水廠的高程布置 ............................................................................................................................................... 19 污水處理廠概算及處理成本 ...................................................................................................................................... 20 計(jì)算依據(jù) ............................................................................................................................................................. 20 計(jì)算原則 ............................................................................................................................................................. 20 3 設(shè)計(jì)計(jì)算書 ........................................................................................................................................................................ 21 污水管道系統(tǒng) ............................................................................................................................................................. 21 街區(qū)編號(hào)并計(jì)算其面積 ....................................................................................................................................... 21 劃分設(shè)計(jì)管段，計(jì)算設(shè)計(jì)流量 ...............................................................