【正文】 d floatable material , in case that it influences the working of the following treatment and the pipeline .And then wastewater is promoted into the medium screening by that it enters the laminar flow sand pool , it is used to remove bigger inanic sand of heavy density, by this way,the density of anic material in mud can be improved . The abovementioned sewage disposal is the physical disposal stage,it’s same to the two major craft . Now make a brief instruction of theiological disposal parts of these two major crafts separately. Toxidize ditch and unoxidize pool are two important part,and water flows into three ditchs in turn, also Toxidize ditch plays the role of secondary unoxidize pond release with aeration distance, the dissolved oxygen density make oxidize area and unoxdize area present in appears the nitration and the counter nitration process in succession , get the result of denitrogenation. At the same time the fine oxygen district absorbs the phosphorus, get the result of getting rid of phosphorus Through the budgetary estimating of investment, operating the calculation of the expenses, paring of conomy and technology etc, finally we have the Toxidize ditch is the best scheme . The surplus mud is promoted by the pump into mud concentrated pool in order to reduce the moisture content of the mud and reduce the volume of mud .after concentration , the moisture content is still large, the volume is the order to A 城市污水處理廠設(shè)計 IV prehensive utilization finally, we need to take off water treatment to the mud . 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 order to enable staff member to work in the fresh and beautiful environment, we have assigned 30% of area of general factory for the afforestation , still there are fountain flower bed and manmade lake. Keyword: A2/O Oxidation ditch Phosphorus Sewage and Nitrogen Sludge treatment Sludge concerntrate A 城市污水處理廠設(shè)計 V 目 錄 第一章 污水處理廠工藝設(shè)計 ............................................................................................ 1 設(shè)計原始資料 ..................................................................................................... 1 污水處理程度的確定 ........................................................................................... 2 城市污水處理廠設(shè)計 ........................................................................................... 3 第二章 污水處理構(gòu)筑物設(shè)計計算 ..................................................................................... 6 泵前中格柵 ......................................................................................................... 6 污水提升泵房的設(shè)計 ........................................................................................... 8 泵后細格柵 ..................................................................................................... 10 平流式沉砂池 ....................................................................................................11 厭氧池 .............................................................................................................. 14 氧化溝 .............................................................................................................. 15 接觸消毒池 ....................................................................................................... 23 加氯間 .............................................................................................................. 24 流量計的設(shè)計計算 ............................................................................................ 24 ............................................................................................................. 25 配泥池 ............................................................................................................ 26 污泥提升泵房的設(shè)計 ....................................................................................... 27 污泥濃縮池 ..................................................................................................... 28 貯泥池 ............................................................................................................ 30 脫水機房 ......................................................................................................... 31 污泥的最終處置 .............................................................................................. 32 附屬建筑物面積的確定 .................................................................................... 32 第三章 城市污水處理廠的平面布置 ............................................................................... 33 第四章 處理流程高程設(shè)計 ............................................................................................. 34 第五章 其 它 ............................................................................................................. 38 建筑結(jié)構(gòu)設(shè)計 ................................................................................................... 38 安全衛(wèi)生及消防 ................................................................................................ 38 自動控制與監(jiān)測 ................................................................................................ 39 第六章 處理成本的計算 ............................................................................................. 40 ................................................................................................. 40 估算依據(jù) .................................................................................................. 40 單項構(gòu) 筑物的工程造價計算 ..................................................................... 40 污水處理成本計算 ...........