【正文】 水處理廠工藝設(shè)計手冊》，《城市污水廠處理設(shè)施設(shè)計計算》 設(shè)計原則 (1)執(zhí)行國家關(guān)于環(huán)境保護(hù)的政策，符合國家地方的有關(guān)法規(guī)、規(guī)范和標(biāo)準(zhǔn)； (2)采用先進(jìn)可靠的處理工藝，確保經(jīng)過處理后的污水能達(dá)到排放標(biāo)準(zhǔn)； (3)采用成熟、高效、優(yōu)質(zhì)的設(shè)備，并設(shè)計較好的自控水平，以方便運行管理； (4)全面規(guī)劃、合理布局、整體協(xié)調(diào)，使污水處理工程與周圍環(huán)境協(xié)調(diào)一致； (5)妥善處理污水凈化過程中產(chǎn)生的污泥固體物，以免造成二次污染； (6)綜合考慮環(huán)境、經(jīng)濟(jì)和社會效益，在保證出水達(dá)標(biāo)的前提下，盡量減少工程投資和運行費用。“七五”、“八五”、“九五”國家科技攻關(guān)課題的建立與完成，使我國在污水處理新技術(shù)、污水再生利用新技術(shù)、污泥處理新技術(shù)等方面都取得了可喜的科研成果，某些研究成果達(dá)到國際先進(jìn)水平。據(jù)調(diào)查， 70％ 的飲用水水源不符合衛(wèi)生標(biāo)準(zhǔn)，使我國城市供水水源受到嚴(yán)重的威脅。 technology process. Agrille Blower Water collecting well The sludge lift pump Grit chamber With wells Oxidation ditch Two sink the pond Return sludge pump Sludge pump Concentrating poll Contact disinfection tank The sludge lift pump Sludge storage tank Sludge dewatering room 7 引 言 中國是一個水資源匱乏的國家，人均水資源占有量僅為世界人均占有量的四分之一。 此論文包括設(shè)計背景，方案選擇的依據(jù)，工藝流程，構(gòu)筑物尺寸的計算，設(shè)備選型，成本核算等。氧化溝水力停留時間長，有機(jī)負(fù)荷低，污泥齡高，又很好的沉降性能， 對 BOD和 SS的處理效率高，與其他的活性污泥相比有明顯的優(yōu)點：流程簡單，投資費用少，運行效果穩(wěn)定，出水水質(zhì)好且有一定承受水質(zhì)水量沖擊負(fù)荷的能力。 I 目 錄 摘要 ................................................................................................................................................ III Abstract .............................................................................................................................................V 引 言 ............................................................................................................................................. 7 第 1章 設(shè)計任務(wù)及概況 .................................................................................................................... 8 設(shè)計任務(wù)及依據(jù) ................................................................................................................... 8 設(shè)計任務(wù) .................................................................................................................... 8 設(shè)計依據(jù)及原則 .......................................................................................................... 8 設(shè)計水量、水質(zhì)及排放標(biāo)準(zhǔn) ........................................................................................ 8 第 2章 城市污水處理工藝選擇 ...................................................................................................... 10 工藝方案分析比較 .............................................................................................................. 10 普通活性污泥法 ........................................................................................................ 10 AB工藝 ..................................................................................................................... 10 SBR工藝 ....................................................................................................................11 .............................................................................................................11 工藝方案選擇 ..................................................................................................................... 15 ..................................................................................................... 15 ............................................................................................................ 15 城市污水水流量的計算 ....................................................................................................... 17 中格柵 ............................................................................................................................... 17 設(shè)計說明 .................................................................................................................. 17 集水池 ............................................................................................................................... 19 設(shè)計說明 .................................................................................................................. 19 設(shè)計計算 .................................................................................................................. 20 污水提升泵 ........................................................................................................................ 20 設(shè)計說明 .................................................................................................................. 20 設(shè)計選型 .................................................................................................................. 20 曝氣沉砂池 ........................................................................................................................ 21 設(shè)計說明 .................................................................................................................. 21 設(shè)計計算 .................................................................................................................. 21 鼓風(fēng)機(jī)房 ............................................................................................................................ 24 配水井 ............................................................................................................................... 24 卡魯塞爾式氧化溝 .............................................................................................................. 24 設(shè)計說明 .................................................................................................................. 24 設(shè)計計算 .................................................................................................................. 25 輻流式沉淀池 ..................................................................................................................... 27 設(shè)計說明 .................................................................................................................. 27 設(shè)計計算 .................................................................................................................. 27 回流污泥泵房 ................................................................................................................... 30 設(shè)計說明 .....................................................................