【正文】 遼寧工程技術(shù)大學(xué)畢業(yè)設(shè)計(jì)（論文） 中文題目： 6 萬噸 /天生活污水 A2/O 處理與回用工藝設(shè)計(jì) 外文題目： THE TECHNOLOGICAL DESIGN OF THE 60000 TON PER DAY A2/O SEWAGE TREATMENT AND REUSE 畢業(yè)設(shè)計(jì)（論文）共 94 頁 （其中：外文文獻(xiàn)及譯文 17 頁） 圖紙共 6 張 完成日期 2020 年 6 月 答辯日期 2020 年 6 月 王雙： 6 萬噸 /天生活污水 A2/O 處理與回用工藝設(shè)計(jì) Ⅰ 摘要 水是人類生存的根本，我國的水資源的儲(chǔ)量雖然豐富，但是由于人類的污染和破壞加之一些不可利用 的水資源使水成為我國的可持續(xù)發(fā)展的制約問題之一。 世界上河流污染最嚴(yán)重的 20 個(gè)城市有 16 個(gè)在我國。我們國家的主要流域都存在著嚴(yán)重的污染。污染的主要來源有很多方面，主要是城市生活污水和工礦企業(yè)排放的廢水。 所以對(duì)污水進(jìn)行深入處理并實(shí)現(xiàn)其回收利用成為當(dāng)今城市發(fā)展的重要話題之一。 A2/O，即厭氧 — 缺氧 — 好氧三段式活性污泥法。該工藝是傳統(tǒng)活性污泥工藝、生物硝化及反硝化工藝和生物除磷工藝的綜合。污水在流經(jīng)三個(gè)不同功能分區(qū)的過程中，在不同微生物菌群作用下，使污水中的有機(jī)物、氮、磷得到去除。本工藝在系統(tǒng)上是最簡單的同步除磷 脫氮工藝，總水力停留時(shí)間小于同類其它工藝。在厭氧、缺氧和好氧交替運(yùn)行的條件下可抑制絲狀菌繁殖，克服污泥膨脹， SVI 值一般小于 100，有利于處理后污水與污泥的分離，運(yùn)行中在厭氧和缺氧段內(nèi)只需輕緩攪拌，運(yùn)行費(fèi)用低。 本工藝對(duì)污水處理效果較好，且能夠節(jié)約污水廠的運(yùn)行成本， 有利于 實(shí)現(xiàn)其出水的再 利用。 關(guān)鍵詞：發(fā)展 ； 水污染 ； A2/O；硝化 ；節(jié)約 。 遼寧工程技術(shù)大學(xué)畢業(yè)設(shè)計(jì)（論文） Ⅱ Abstract Water is essential for human survival, although water resources reserves is rich in our country , because of our pollution, destruction and some useless water to make water bee one of the constraints of sustainable development in our country. Of the 20 most seriously polluted river cities in the world, 16 are in China. The major watersheds in our country all suffer severe pollution. There are many main sources that cause pollution, most of which are the city sewage, industrial and mining enterprise waste water emissions. So the sewage deep treatment and reuse bee one of the important topics of urban development. A2 / O, which is anaerobicanoxicaerobic activated sludge process of three stages. This process is a traditional activated sludge process, biological nitrification, denitrification and biological pHospHorus removal process of the synthesis. When the sewage flows through the three different functional partitions in the process, the anic matter, nitrogen and pHospHorus can be removed effectively due to the different microbial flora. This process is the most simple system that biological nitrogen removal process at the same time。 the total hydraulic retention time is less than other craft. Running alternately by the anaerobic, anoxic anaerobicaerobic conditions can inhibiting filamentous bacteria breeding, overe the sludge bulking, and the SVI generally less than 100, it is advantageous to the treatment of sewage and sludge after separation, in anaerobic and lack of oxygen in the operation of the segment only gentle stirring, low operating cost. The process effect of sewage treatment is well, and can save money for the operation of the sewage plant, advantageous to realize the reuse of the water. Keywords: development。 water pollution。 A2/O。 nitrification。 save. 王雙： 6 萬噸 /天生活污水 A2/O 處理與回用工藝設(shè)計(jì) 目錄 引言 ....................................................................................................................... 1 1 概論 ................................................................................................................... 2 設(shè)計(jì)任務(wù) .................................................................................................. 2 設(shè)計(jì)要求 .................................................................................................. 2 設(shè)計(jì)基礎(chǔ)資料 .......................................................................................... 2 污水的主要來源 ...................................................................................... 3 環(huán)境概況 .................................................................................................. 3 污水處理廠廠址 ...................................................................................... 3 市政管網(wǎng) .................................................................................................. 4 工藝流程方案的選擇 .............................................................................. 4 2 污水處理系統(tǒng) .................................................................................................... 5 中格柵 ...................................................................................................... 5 提升泵 .................................................................................................... 10 細(xì)格柵 .....................................................................................................11 沉砂池 .................................................................................................... 13 初沉池 .................................................................................................... 18 A2/O 生化反應(yīng)池 .................................................................................... 24 二沉池 .................................................................................................... 33 接觸消毒池 ............................................................................................ 39 3 污泥處理系統(tǒng) .................................................................................................. 41 遼寧工程技術(shù)大學(xué)畢業(yè)設(shè)計(jì)（論文） 污泥水分去除的意義和方法 ................................................................. 41 污泥濃縮池 ............................................................................................ 42 污泥脫水系統(tǒng) ........................................................................................ 44 污泥提升泵的選擇 ................................................................................ 44 污泥回流泵的選擇 ................................................................................ 45 4 污水深度處理系統(tǒng) .......................................................................................... 45 絮凝池 .................................................................................................... 45 沉淀池 .................................................................................................... 49 過濾池 .................................................................................................... 5