【正文】 計(jì)。據(jù)此，需確定污水處理廠的處理 工藝流程和處理構(gòu)筑物的類型與數(shù)量，進(jìn)行處理建筑物及設(shè)備的工藝設(shè)計(jì)計(jì)算和污水廠各構(gòu)筑物以及各種管渠等總體布置。 因?yàn)樵撴?zhèn)人口較多城市污水排放量大，如果不處理直接排放到河流，將對(duì)水體造成污染，因?yàn)槲鬯泻纵^多，也可使水體富營養(yǎng)化，所以必須建設(shè)污水處理廠對(duì)該市排放的污水進(jìn)行處理。 我本次設(shè)計(jì)的正是關(guān)于這樣的一個(gè)新建城鎮(zhèn)的污水處理，該鎮(zhèn)的污水廠位于江西省瑞金市，征地 23808 平方米，設(shè)計(jì)地面標(biāo)高用河流 米。從發(fā)展眼光看，靜候我國的大部分人口將生活在中小城鎮(zhèn)。 關(guān)鍵詞：城市污水 三溝式氧化溝工藝 脫氮除磷 工藝設(shè)計(jì) II Abstract The main task of the design is the design of the sewage treatment plant in Ruijin City, the design of the recent scale of 600003m/d, forward 900003/ d, according to the situation of Ruijin City sewage discharge, bined with the actual situation and development prospects of the city, the proposed threegroove typeoxidation ditch process the municipal sewage treatment. The oxidation ditch is characterized by secondary sedimentation tank and aeration tank in building, for which the two alternating ditch aeration zone and settling zone. This system simplifies the process, you can save the infrastructure and operating costs, easy to operate, oxidation ditch effluent convenient, the overflow weir opening and closing as well as aeration rotating brush start and stop automation control can be achieved. The process uses alternating oxidation ditch, three channel jointly built Toxidation ditch to better reflect the advantages of alternate work to improve the water quality effects, better than DE oxidation ditch. The process can not only achieve the removal of BOD5, CODcr, SS purposes, and can achieve the purpose of BNR its outstanding performance characteristics are less area, infrastructure costs at the end, simple operation, stable operation, easy maintenance and management, treatment effect is stable and reliable, good water quality. The design results show that: the sewage treatment plant effluent can meet 《 the secondary standard in urban sewage treatment plant pollutant discharge standards 》(GB189182020). Keywords: urban sewage process of triple oxidation ditch process design 景德鎮(zhèn)陶瓷學(xué)院材料學(xué)院課程設(shè)計(jì)任務(wù)書 院（系） 材料學(xué)院 2020 年 9 月 22 日 專 業(yè) 環(huán) 境 工 程 班 級(jí) 環(huán) 境 09 級(jí) 學(xué)生姓名 范小豐 指導(dǎo)教師 梁華銀 題 目 處理量 6 萬噸 /日城市生活污水處理廠初步設(shè)計(jì) 設(shè)計(jì)技術(shù)指標(biāo)、參數(shù)或課題研究主要內(nèi)容： 進(jìn)水： BOD5=180mg/L,CODcr=220 mg/L,SS=170 mg/L, NH3N=28 mg/L(10℃ ),TN=48 mg/L 出水：達(dá)國家生活污水二級(jí)排放標(biāo)準(zhǔn) 基本要求： 1 選擇合適的工藝 2 選擇構(gòu)筑物并進(jìn)行設(shè)計(jì)計(jì)算 3 圖紙包括總高程圖、流程圖和設(shè)備圖，要求手工和計(jì) 算機(jī)并用 4 設(shè)計(jì)說明書要求格式規(guī)范，語句通暢、圖表規(guī)范 時(shí)間安排： 第 14 周 畢業(yè)實(shí)習(xí)；完成實(shí)習(xí)日記與實(shí)習(xí)報(bào)告 第 5 周 查閱文獻(xiàn)，選擇工藝； 第 612 周 設(shè)備與工藝的設(shè)計(jì)計(jì)算，完成設(shè)計(jì)說明書 第 1316 周 繪制圖紙，修改并打印論文 第 17 周 上交論文，準(zhǔn)備答辯 目 錄 摘 要 .............................................................................................................................. I Abstract ............................................................................................................................II 前言 ................................................................................................................................. 1 ............................................................................................................ 2 設(shè)計(jì)任務(wù) ............................................................................................................ 2 設(shè)計(jì)水質(zhì) ............................................................................................................ 2 設(shè)計(jì)依據(jù)及原則 .................................................................................................. 3 地形、水文、氣象、工程資料 ............................................................................. 3 地形資料 ................................................................................................... 3 水文資料 ................................................................................................. 3 氣象資料 ................................................................................................... 4 工程地質(zhì)資料 ............................................................................................ 4 污水進(jìn)廠干管資料 ..................................................................................... 4 其它 .......................................................................................................... 4 ......................................................................................................... 5 工藝方案選擇原則 .............................................................................................. 5 廠址選擇 ............................................................................................................. 5 污水處理工藝流程的確定 ..................................................................................... 6 我國污水處理工藝的現(xiàn)狀 .......................................................................... 6 污水處理工藝流程方案的介紹與比較 .......................................................... 7 具體工藝流程的確定 .......................................................................................... 14 工藝流程圖 .............................................................................................. 14 主要構(gòu)筑物的選擇 ............................................................................................ 15 格柵 ........................................................................................................ 15 進(jìn)水閘井 ................................................................................................. 15 污水泵房 ................................................................................................. 15 沉砂池 .................................................................................................... 16 氧化溝 .................................................................................................... 17 消毒 ........................................................................................................ 17 計(jì)量設(shè)施 .................................................................................................. 18 濃縮池 ..............