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北京某小區(qū)污水處理及中水回用工程設(shè)計計算書-全文預(yù)覽

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【正文】 mg/L 五日生化需氧量( BOD5): 260mg/L 化學(xué)需氧量( CODcr): 380mg/L 總氮( N): 46mg/L 總磷( P): 3mg/L 重金屬及有毒物質(zhì):微量 處理后的水質(zhì)要求: BOD≤20mg/L SS≤30mg/L 深度處理后的水質(zhì)要求: BOD5≤10mg/L SS≤10mg/L N ≤15mg/L P ≤1mg/L 象資料: ( 1) 氣溫 年平均 14℃ , 夏季平均 30℃ , 冬季平均 13℃ , 歷年最高 38℃ ,歷年最低 23℃ ( 2) 降雨量 年平均 824mm 歷年日最大 276mm ( 3) 相對濕度 年平均 66% , 歷年最大 74% , 歷年最小 60% ( 4) 主導(dǎo)風(fēng)向 冬季:偏西北為主 夏季:偏東北為主 ( 5) 冰凍期: 120 日 : 7( 1) 土壤類型:粘土 ( 2) 土壤承載力: Mpa ( 3) 設(shè)計地震裂度: 8 度 ( 1) 河流水文資料 最高水位: 正常水位: 最低水位: ( 2) 地下水水位: 58m ( 3) 土壤冰凍深度: 54cm : 管內(nèi)底標(biāo)高: , 管徑 700mm, 充滿度 二 .城市污水處理設(shè)計 工藝流程的比較 城市污水處理廠的方案,既要考慮有效去除 BOD5又要適當(dāng)去除 N, P故可采用 SBR 或氧化溝法,或 A/A/O法 ,以及一體化反應(yīng)池即三溝式氧化溝得改良設(shè)計 . A SBR 法 工藝流程: 污水 → 一級處理 → 曝氣池 → 處理水 工作原理: 1)流入工序:廢水注入,注滿后進(jìn)行反應(yīng),方式有單純 注水,曝氣,緩速攪拌三種, 2)曝氣反應(yīng)工序:當(dāng)污水注滿后即開始曝氣操作,這是最重要的工序,根據(jù)污水處理的目的,除 P脫 N應(yīng)進(jìn)行相應(yīng)的處理工作。 廠區(qū)地形平坦,污水廠地面標(biāo)高為 , 污水廠坐標(biāo)定位:西南: A= , B=,東北 A=, B= 、水質(zhì)資料 水量資料: ( 1)近期資料: 設(shè)計人 口 : 5 萬人 污水量標(biāo)淮: 110 升 /人 ⑤ 學(xué)習(xí)繪制平面圖、流程圖及施工圖的方法與技巧,為走上工作崗位之前打下良好的專業(yè)基礎(chǔ)。At the same time, the ammonia were too oxidized nitrate with second nitrate, this time, mix with the liquid be placed in the oxygen the spirit machine downstream, after water current be bee by the swift flow appearance of the spirit District of even flow the appearance, the water current maintains in the minimum current velocity, guaranteeing the live and dirty mire be placed in the floats the appearance.( average current velocity ms/ s)Oxidize microbially the process consumed to fuse the oxygen in the water, until the value of DO declines for zero, mixing with the liquid report the anoxia nitric that turn the function through anoxia area, mix with the liquid enter to have the oxygen area, pleting once system inside, the BOD declines the solution is a continuous process, the nitric turns the function to turn with the versa nitric the function take place in same of structural restrict, this kind of oxidize the ditch although can then valid whereabouts BOD, divided by the phosphorus take off the nitrogenous ability limited[7]. For the sake of the acquisition better divided by the phosphorus take off the nitrogenous result, Carrousel 2020 systems increased a oxygen District before mon Carrousel oxidize ditch with the unique oxygen area.( call again that the versa nitric in front turns the area)The dirty mire in all refluxes enters the anaerobic District with 41030% dirty water, can under the anoxia with 1030% carbon source term plete remaining of dirty mire in reflux inside nitric acid nitrogen to versa nitric to turn, creates for the unique oxygen pond of hereafter unique oxygen the same time, anaerobic District inside of concurrently the sex germs convert the dissolubility BOD VFA, the germ acquire the VFA its assimilation PHB, the energy source needed solves in the phosphoric water and cause phosphatic anaerobic District a water enters the inner part installs the unique oxygen area that have the mixer, the socalled unique oxygen is a pond inside to mix with liquid since have no the numerator oxygen, also have no the pound oxygen( nitric acid root), the here unique oxygen environment is next,7090% dirty water can provide the enough carbon source, can make the germ of released the phosphorus unique oxygen area connects behind the mon Carrousel oxidizes the ditch system, further pleting to do away with the BOD and take off the nitrogen with divided by the phosphorus .Finally, mix with the liquid transfer the dirty mire inside in oxidize ditch enrich oxygen area eject, while enriching the oxygen environment germ surfeit, phosphorus from the water, ejecting the system with the dirty mire in this, in Carrousel 2020 systems, than pleted to do away with the BOD, COD with take off at the same time goodly the nitrogen divided by the phosphorus . Key phrase: The Carrousel oxidizes the ditch divideds by the phosphor takes off the nitrogen construction mechanism 污水廠設(shè)計說明書 一.設(shè)計資料 本畢業(yè)設(shè)計(論文)課題應(yīng)達(dá)到的目的: 5① 進(jìn)一步鞏固及深化對污水處理技術(shù)基本概念與基本理論知識的理解;培養(yǎng)學(xué)生綜合運(yùn)用所學(xué)各門課程基本理論、基本知識和基本技能、分析解決實(shí)際工程問題能力。絕氧區(qū)后接普通 Carrousel 氧化溝系統(tǒng),進(jìn)一步完成去除 BOD、脫氮和除磷。 為了取得更好的除磷脫氮的效果, Carrousel 2020 系統(tǒng)在普通 Carrousel氧化溝前增加了一個厭氧區(qū)和絕氧區(qū)(又稱前反硝化區(qū))。微生物的氧化過程消耗了水中溶解氧,直到 DO 值降為零,混合液呈缺氧狀態(tài)。 1目錄 摘要 2 ABSTRACT3 第一篇 設(shè)計說明書 3 第一章 設(shè)計資料 4 第二章 處理設(shè)計 7 第三章 構(gòu)筑物設(shè)計 12 第二篇 設(shè)計計算書 21 第一章 構(gòu)筑物設(shè)計計算 21 第二章 污泥處理設(shè)計計算 40 第三章 高程計算 45 參考文獻(xiàn) 47 參考資料 48 2設(shè)計摘要 Carrousel 氧化溝處理污水的原理 最初的普通 Carrousel 氧化溝的工藝中污水直接與回流污泥一起進(jìn)入氧化溝系統(tǒng)。在曝氣機(jī)下游,水流由曝氣區(qū)的湍流狀態(tài)變成之后的平流狀態(tài),水流維持在最小流速,保證活性污泥處于懸浮狀態(tài)(平均流速 )。由于結(jié)構(gòu)的限制,這種氧化溝雖然可以有效的去處 BOD,但除磷脫氮的能力有限 [7]。厭氧區(qū)出水進(jìn)入內(nèi)部安裝有攪拌器的絕氧區(qū),所謂絕氧就是池內(nèi)混合液既無分子氧,也無化合物氧(硝酸根), 在此絕氧環(huán)境下, 7090%的污水可提供足夠的碳源,使聚磷菌能充分釋磷。 關(guān)鍵詞: Carrousel 氧化溝 除磷脫氮 結(jié)構(gòu) 機(jī)理
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