【正文】 菌 和反硝化細(xì)菌利用后濃度已很低，有利于自養(yǎng)的硝化菌的生長繁殖。 關(guān)鍵詞： 厭氧池，缺氧池，好氧池，脫氮除磷 ， A2/O， 有機(jī)負(fù)荷 Abstract III Abstract A2/O method is the most simple process, one of the most widely applied to take off the nitrogen phosphorus removal process. First YanYangChi into wastewater, sewage of facultative anaerobic bacteria of easily degradable anics into VFAs. Backflow sludge into the phosphorus enrichment bacteria body phosphorus enrichment depose, this for release phosphorus, the release of energy for the part of aerobic bacteria phosphorus enrichment in anaerobic environment survive, the other part of phosphorus enrichment bacteria for active absorption VFAs, and in store inside body PHB. Oxygen into the area, denitrifying bacteria by using the mixture of nitrate and water into the backflow of anic matter for denitrification denitrification, then into good oxygen area, phosphorus enrichment bacteria in addition to absorbing sewage residual of easily degradable BOD outside, main deposition of the store inside body produces energy PHB grow for itself, and the dissolution of active absorption conditions of phosphorus, this is p uptake, in the form of phosphorus enrichment in store inside body. The sewage is anaerobic, lack of oxygen area, anic matter were phosphorus enrichment bacteria and denitrifying bacteria using the concentration is low, which is helpful for the denitrifying bacteria growth autotrophic breeding. Finally, the mixture into the sediment basins, spate separation, clear liquid water treatment on as emissions, part of the sludge precipitation backflow YanYangChi, another part as excess sludge emissions. This process in the system the most simple synchronization can be called off nitrogen phosphorus removal process, and the hydraulic retention time less than other similar technology. And in anaerobiclack of oxygengood raised alternate operation conditions, not cause sludge inflation. Key words:, YanYangChi, hypoxia pool, Aerobic pool, denitrification and phosphorus, A2/O ,anic load 目 錄 IV 目 錄 摘 要 ................................................................................................. II Abstract ........................................................................................... III 目 錄 .................................................................................................. Ⅲ 第一章 引 言 ..................................................................................... 1 課題的背景 ...............................................................................................1 設(shè)計(jì)依據(jù) ...................................................................................................2 ....................................................................................................2 設(shè)計(jì)水量 ...........................................................................................2 設(shè)計(jì)水質(zhì) ...........................................................................................2 其他資料 ...........................................................................................3 城市污水的概述 .......................................................................................3 城市污水的來源 ...............................................................................3 城市污水的特點(diǎn) ...............................................................................3 第二章 工藝設(shè)計(jì)方案的確定 .................................................................. 4 污水處理工藝選擇原則 ...........................................................................4 工藝設(shè)計(jì)方案對比 ...................................................................................4 穩(wěn)定塘工藝 .......................................................................................5 傳統(tǒng)活性污泥法 ...............................................................................5 AB 法 ..................................................................................................6 A2/O 法 ..............................................................................................6 氧化溝工藝 .......................................................................................6 厭氧生物處理工藝 ...........................................................................7 SBR 法 ................................................................................................8 污水處理工藝流程的確定 .......................................................................9 工藝流程介紹 ...................................................................................9 可行性分析 .....................................................................................10 第三章 構(gòu)筑物的設(shè)計(jì)計(jì) 算 .................................................................... 11 格柵的設(shè)計(jì)計(jì)算 ..................................................................................... 11 設(shè)計(jì)說明 ......................................................................................... 11 設(shè)計(jì)計(jì)算 ......................................................................................... 11 .......................................................................................... 11 設(shè)計(jì)參數(shù) .........................................................................................12 設(shè)計(jì)計(jì)算 .........................................................................................12 A2/O法 ....................................................................................................12 設(shè)計(jì)說明 .........................................................................................14 設(shè)計(jì)計(jì)算 .........................................................................................14 目 錄 V 二沉池 .................................................................................................22 設(shè)計(jì)說明 .........................................................................................22 設(shè)計(jì)計(jì)算 ...........................