【正文】 摘 要 本次畢業(yè)設(shè)計是以相關(guān)的資料為依據(jù) ,設(shè)計一座城鎮(zhèn)污水處理廠 .其日處理量近期為 10萬立方米。由于城市污水的主要成分為有機物 ,所以本次設(shè)計采用了氧化溝工藝 . 主要任務 是 工藝流程選擇 及 構(gòu)筑物 設(shè)計 和計算 。 該污水處理廠的污水處理流程為：污水經(jīng)過粗格柵，由泵房提升后流過細格柵，進入沉砂池，再 進入氧化溝，二沉池，最后排入江河 。 在完成污水和污泥處理構(gòu)筑物的設(shè)計計算后 ,根據(jù)平面布置的原則 ,綜合考慮各方面因素進行了污水廠的平面布置。據(jù)污水的流量對連接各構(gòu)筑物的管渠進行了選徑、確定流速以及水力坡降 ,然后進行了水力損失計 算。據(jù)水力損失計算對污水和污泥高程進行了計算和布置。 在最后階段完成對平面圖、高程圖及各種主要的構(gòu)筑物的繪制。 關(guān)鍵詞： 污水處理； Carrousel氧化溝 ； 脫氮除磷； 污泥 濃縮 茂名學院本科畢業(yè)設(shè)計： Carrousel 氧化溝城鎮(zhèn)污水處理廠的設(shè)計 Ⅱ Abstract This graduation project is take the related material as the basis, designs a town sewage treatment plant. Its day process load in the near future will be 100,000 cubic meters. Because the city sewage principal constituent is an anic matter, therefore this design has used the oxidation ditch craft. The main task is the selections of process flow and the designs and calculation constructions used in process flow. The process of the sewage treatment plant: sewage e across the coarse grille, sewage was lifted up by pump and flow by thin case bar , and then it enters the laminar flow sand pool, oxidation ditch, secondary sedimentation tank, finally The water falls out through a pipe a long way out to river. After finishing calculation of design, according to principle of laying, consider the factors synthetically to confirm the place of the sewage factory. According to flow volume of sewage we can select the footpath , confirm the velocity of flow and water conservancy slope , then calculate water conservancy losses. In the end, Floor plan, profile in elevation and the other mainly structures drawing must finished. Key words： water treatment。 Carrousel oxidation ditch。 Phosphorus Sewage and Nitrogen。 Sludge concentratio 目 錄 Ⅲ 目 錄 摘 要 ..........................................................................................................................................1 Abstract .....................................................................................................................................2 第一章 設(shè)計概論 .....................................................................................................................5 設(shè)計依據(jù)和設(shè)計任務 ................................................................................................. 5 原始依據(jù) .......................................................................................................... 5 設(shè)計內(nèi)容和要求 .............................................................................................. 5 設(shè)計目的 .......................................................................................................... 6 進出水水質(zhì) ................................................................................................................. 6 第二章 工藝流程的確定 .........................................................................................................7 城市污水處理 發(fā)展和現(xiàn)狀 ......................................................................................... 7 目前存在的問題 .............................................................................................. 7 今后的發(fā)展趨勢 .............................................................................................. 8 污水 生物 處理方法 比較 ............................................................................................. 8 工藝流程的確定 ....................................................................................................... 13 工藝流程 ........................................................................................................ 13 污水處理部分 ................................................................................................ 14 污泥處理部分 ................................................................................................ 15 物料衡算 ................................................................................................................... 17 第三章 污水處理系統(tǒng) ...........................................................................................................18 粗格柵 ....................................................................................................................... 18 污水提升泵房 ........................................................................................................... 20 細格柵 ....................................................................................................................... 21 沉砂池 ....................................................................................................................... 22 均質(zhì)池 ....................................................................................................................... 24 氧化溝 ....................................................................................................................... 25 配水井 ....................................................................................................................... 30 二沉池 ....................................................................................................................... 31 接觸消毒池 ............................................................................................................... 33 加氯間 ..................................................................................................................... 34 污泥回流泵房 ......................................................................................................... 34 第四章 污泥處理系統(tǒng) ...........................................................................................................36 設(shè)計參數(shù) ................................................................................................................... 36 污泥濃縮池 ............................................................................................................... 36 貯泥池 ........................................................................