【正文】 I 摘 要 現(xiàn)如今我國社會發(fā)展迅速，尤其是經(jīng)濟，隨之而來的就是更多的環(huán)境污染，因此現(xiàn)在更多的人對環(huán)保投入了更多的注意，而在所有這些環(huán)境污染中，水污染是一個十分嚴重的問題，沒有水，人類就無法存活，水資源對我國社會的長期發(fā)展尤為重要。與此同時我們也可以看到，水治理工程在我國得到了蓬勃的發(fā)展， 全國大多的城市都對老城區(qū)的給排水管網(wǎng)進行了改造，并且還興建了一大批污水處理廠對城市的生活污水，工業(yè)廢水進行處理。 本設(shè)計是江蘇省南通市市老壩港的污水處理廠的設(shè)計。其設(shè)計內(nèi)容主要包括：污水處理廠工程。本次設(shè)計均采用了國家最 新的相關(guān)規(guī)定 、 標準 和設(shè)計規(guī)范。 據(jù)計算，確定污水處理廠的遠期規(guī)模為 16800 噸 /天，考慮到該地區(qū)夏季主風向為北面方向及河流走向，污水廠將修建在老壩港的東部。結(jié)合污水的水質(zhì)情況，經(jīng)過方案比較，本設(shè)計采用卡魯塞爾氧化溝為主處理工藝。經(jīng)處理后的污水排入北凌河。 污水處理流程如下：原污水 → 中格柵 → 提升泵站 → 細格柵 → 沉砂池 → 氧化溝 → 二沉池 →消毒池 → 出水。 關(guān)鍵詞 : 污水處理廠 。 卡魯塞爾氧化溝 ； 二級處理。 II ABSTRACT Nowadays, our society develops rapidly, especially the economy. The following result is more environment pollution, so many people have pay more attention to envirment protection. Of all these pollution , water pollution is a serious problem, no water, no life. Water resource bees more important considering the longterm development of our society. At the same time we can see water treatment project have got a fast development in China, The city in the whole nation almost reform drainpipe . And still built the dirty water of large quantity disposal the factory to discard the water to proceed to handle to city. This project is a drainage design for the Laobagang of Nantong city in Jiangsu province. The design mainly includes wastewater treatment plan. And this design rests on the national latest related stipulation,the standard,and the design standard. It has been calculated and determined that the design sale of sewage treatment plant in Laobagang is 16800t/d, in forward. Taking into account the prevailing wind direction in summer and the running direction of river, the wastewater treatment plant will be built in the east district. Combined with the water quality of effluent after the program parison, this design uses the The AnaerobicAnoxicOxicas the main process, which can be effective at removing nitrogen and phosphorus, and meet the design requirements. The treated sewage will be discharged into the Beiling river at last. Sewage treatment process is as follows: Raw sewage→The grid→Pump stations→Fine grid→Grit chamber→ Carrousel oxidation ditch →Secondary settling tank →Disinfection tank→ Out of Water. Keywords: Wastewater Treatment Plant。 Carrousel oxidation ditch 。 Taking off the nitrogen and the phosphorus。 Secondary treatment. III 目 錄 緒 論 ............................................................................. 1 第一章 設(shè)計概論 ................................................................... 2 設(shè)計任務(wù) .................................................................. 2 該地區(qū)的綜合概況 .......................................................... 2 地理位置 ............................................................ 2 地形地貌，工程地質(zhì)及水文地質(zhì) ......................................... 2 設(shè)計水量與水質(zhì) ...................................................... 2 第二章 污水管網(wǎng)設(shè)計 ............................................................... 4 排水系統(tǒng)體制的確定 ........................................................ 4 排水系統(tǒng)規(guī)劃設(shè)計原則 ................................................ 4 排水系統(tǒng)體制的選擇 .................................................. 4 污水管網(wǎng)平面布置 .......................................................... 5 污水管段及其劃分 .................................................... 5 污水管網(wǎng)平面布置 .................................................... 5 污 水管道的設(shè)計計算 ........................................................ 6 參數(shù)要求 ............................................................ 6 設(shè)計管段 ............................................................ 7 生活污水量總變化系數(shù) ................................................ 7 管道計算 .................................................................. 8 第三章 污水處理廠設(shè)計 ............................................................. 8 污水處理廠址選擇 .......................................................... 8 污水污泥處理工藝選擇 ...................................................... 9 水質(zhì) ................................................................ 9 污水、污泥處理工藝選擇 .............................................. 9 工藝流程的選擇 ............................................................ 13 主要生產(chǎn)構(gòu)筑物工藝設(shè)計 ................................................... 13 進水泵房 ........................................................... 13 細格柵和沉砂池 ..................................................... 13 鼓風機房 ........................................................... 14 二次沉淀池 ......................................................... 14 IV 配水集泥井 ......................................................... 14 污泥濃縮池 ......................................................... 14 脫水車間 ........................................................... 14 第四章 污水廠構(gòu)筑物的設(shè)計計算 ..................................................... 14 中格柵設(shè)計 ............................................................... 14 格柵的設(shè)計要求 ..................................................... 14 設(shè)計參數(shù) ........................................................... 15 中格柵的設(shè)計計算 ................................................... 15 提升泵站的設(shè)計 ........................................................... 18 設(shè)計參數(shù) ........................................................... 18 水泵站設(shè)計流量和揚程的確定 .......................................... 18 水泵機組的選擇 ..................................................... 19 集水池容積及其布置 ................................................. 19 水泵機組布置 ....................................................... 19 吸水管路的布置 ..................................................... 19 壓水管路的布置 ..................................................... 19 泵站揚程的校核 ..................................................... 20 泵站輔助設(shè)施 ....................................................... 20 細格柵的設(shè)計計算 ......................................................... 21 設(shè)計