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環(huán)境工程課程設(shè)計(jì)--污水處理廠工藝設(shè)計(jì)-展示頁(yè)

2025-01-22 13:33本頁(yè)面
  

【正文】 行成本低廉,操作管理方便、節(jié)省投資且能保證長(zhǎng)期穩(wěn)定運(yùn)行的原則。 污水處理廠地形資料及進(jìn)水干管數(shù)據(jù) 廠區(qū)地平設(shè)計(jì)標(biāo)高為 。 工程地質(zhì)資料 (1)地基承載力特征值 ,設(shè)計(jì)地震烈度 8 度。 冬季污水平均溫度為 11℃,夏季污水平均溫度為 20℃, 冰凍期為 90d,土壤冰凍深度最大 145cm。 出 水水質(zhì) 污水處理廠出水水質(zhì)控制為 : BOD5≤ 30mg/L; CODcr≤ 100mg/L; SS≤ 30mg/L。 設(shè)計(jì)任務(wù) 收集設(shè)計(jì)前期資料,確定污水量及排放標(biāo)準(zhǔn),設(shè)計(jì)污水處理工藝,繪制工藝流程圖及總平面布置圖 編制初步設(shè)計(jì)文件并提交 設(shè)計(jì)原始資料 背景資料: 張其寨擬建一污水處理廠,已知張其寨現(xiàn)有人口 32022人,其它設(shè)施產(chǎn)生污水量為 3000m3/d。如今,活性污泥法及其衍生改良工藝是處理城市污水最廣泛使用的方法。 CODcr ≤ 100mg / L。 pH = 7 ~ 8。 NH3N = 15mg / L。 CODcr = 320mg / L。 本設(shè)計(jì)要求對(duì)主要處理構(gòu)筑物進(jìn)行選型和設(shè)計(jì)計(jì)算,繪制出污水處理廠平面布置圖和高程圖。計(jì)算各構(gòu)筑物及管道中的水頭損失。污水和污泥流程應(yīng)盡量考慮重力流,避免迂回曲折。通過此工藝的處理,出水水質(zhì)將達(dá)到設(shè)計(jì)要求。該工藝污水處理流程為:進(jìn)水→粗格柵→提升泵房→細(xì)格柵→沉砂池→初沉池→曝氣池→二沉池→接觸消毒池→巴氏計(jì)量槽→出水排放。遼 寧 科 技 學(xué) 院 (2022 級(jí) ) 本科課程設(shè)計(jì) 題目: 張其寨污水處理 廠工藝 設(shè)計(jì) 專 業(yè): 環(huán)境工程 班 級(jí): 環(huán)境 BG101 姓 名: 學(xué) 號(hào): 指導(dǎo)教師: 遼寧科技學(xué)院課程設(shè)計(jì) ﹣ I ﹣ 摘要 本設(shè)計(jì)任務(wù)是采用普通活性污泥法處理城市污水工藝設(shè)計(jì)。進(jìn)水水質(zhì)指標(biāo)為:BOD=180mg/L; CODcr =320mg/L; SS=240mg/L; NH3N=15mg/L; TP≤ 5mg/L; pH=7~ 8;出水水質(zhì)要求達(dá)到: BOD5≤ 30mg/L; CODcr≤ 100mg/L; SS≤ 30mg/L。污泥處理流程為:污泥→污泥濃縮池→污泥提升泵房→污泥消化池→污泥脫水間→泥餅外運(yùn)。 污水處理廠的平面 布置 ,各種構(gòu)筑物及各種管道布置應(yīng)盡量緊湊、節(jié)省占地面積,同時(shí)還要遵守設(shè)計(jì)規(guī)范、考慮運(yùn)行管理、檢修、運(yùn)輸及遠(yuǎn)期發(fā)展的可能性。污水 、污泥 處理流程的高程計(jì)算 , 沿污水 、污泥 處理中流動(dòng) 距離最長(zhǎng)、水頭損失最大流程,并按最大設(shè)計(jì)流量進(jìn)行高程計(jì)算, 根據(jù)河流洪水位,從后往前,依次推算出各個(gè)構(gòu)筑物的水面標(biāo)高,根據(jù)某些構(gòu)筑物的設(shè)計(jì)要求進(jìn)行核算,符合要求后, 以此來繪制各處理構(gòu)筑物與連接管道(槽)的高程剖面圖。繪制污水 、污泥 處理流程的 平面布置圖和 高程 布置 圖。 關(guān)鍵詞:城市污水 , 工藝設(shè)計(jì), 活性污泥 遼寧科技學(xué)院課程設(shè)計(jì) ﹣ II ﹣ Abstract The design task is the use of conventional activated sludge sewage treatment process design. Water quality indicators: BOD5 = 180mg / L。 SS = 240mg / L。 TP ≤ 5mg / L。 heavy metals and toxic substances: trace, no adverse effects on biological treatment. Water quality required to achieve: BOD5 ≤ 30mg / L。 SS ≤ 30mg / L. The process of sewage treatment process: water → coarse grid upgrade pumping fine grid → grit chamber aeration primary settling tank → secondary clarifier pool disinfection exposure metering tank → pasteurized effluent emissions. Sludge treatment process: sludge thickener sludge → pump → sludge enhance sludge dewatering sludge digestion tank → mud cake between Sinotrans. Through this process of treatment, effluent quality will meet the design requirements. Sewage treatment plant layout, various structures and various piping layout should be pact, saving floor space, but also to ply with design specifications, considering the operation and management, maintenance, transport and longterm development possibilities. Sewage and sludge process should try to consider gravity flow, to avoid twists and turns. Sewage sludge treatment processes elevation calculations, along sewage sludge flows longest distance, maximum flow head loss, according elevation maximum design flow calculation, according to the rivers flood, from the back, followed by the various projected water surface elevation of structures, according to the design requirements of certain structures to be accounted for, to meet the requirements, in order to draw the structure of the deal with the connection pipe (slot) elevation profiles. Structures and calculate the head loss in the pipe. Draw sewage sludge treatment processes floorplan and elevation layout. This design requires major treatment structures for selection and design calculations, to map out the sewage treatment plant floorplan and elevation map. Keywords: Urban wastewater Process design Ordinary active sludge 遼寧科技學(xué)院課程設(shè)計(jì) ﹣ i ﹣ 目錄 1前言 ............................................................... 1 ......................................................... 1 ..................................................... 1 : ..................................................... 1 ....................................................... 1 : ..................................................... 1 、水文地質(zhì)資料 ............................................. 2 ................................................... 2 ............................... 2 : ............................................. 2 ................................................... 2 ....................................................... 2 ....................................................... 3 ......................................................... 3 ..................................................... 4 ....................................................... 4 ......................................................... 4 ......................................... 4 泵前格柵設(shè)計(jì)計(jì)算 ................................................. 4 ..................................................... 5 污水提升泵房設(shè)計(jì)計(jì)算 ........................................... 6 提升泵房設(shè)計(jì)說明 ............................................... 6 ................................................... 7 泵后細(xì)格柵設(shè)計(jì)計(jì)算 .............................................. 7 ................................................. 7 : ................................................. 7 . 設(shè)計(jì)計(jì)算 ...................................................... 8 沉砂池設(shè)計(jì)計(jì)算 .................................................. 9 . 沉砂池的選型: ................................................ 9 .................................................. 10 .................................................. 10 .............................................. 12 .................................................. 14 .................................................. 14 ...................................................... 15 .................................................. 15 .................................................... 16 : .................................................. 16 ........................................
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