【正文】 第 1 頁(yè) /共 33 頁(yè) 目 錄 摘 要 .................................................................... 1 Abstract ................................................................... 2 1 總論 ..................................................................... 3 ........................................ 3 .................................................... 3 ..................................................... 3 ..................................................... 3 .................................................... 4 ........................................... 4 水水質(zhì)現(xiàn)狀 ......................................... 4 ........................................ 4 ........................................... 4 ..................................... 4 ............................................................ 5 ..................................................... 5 ..................................................... 5 2 污水處理工藝方案比較 ...................................................... 5 ........................................................ 5 ........................................... 5 ................................................... 5 ........................................................ 6 ....................................... 6 ............................................. 6 ........................................................ 9 ..................................................... 9 ..................................................... 9 .................................................... 10 3 污水處理工藝設(shè)計(jì)計(jì)算 ..................................................... 10 ....................................................... 10 ........................................................ 10 ................................................ 11 .................................................. 11 ........................................ 13 .................................................... 13 ...................................................... 13 ...................................................... 13 ...................................................... 16 第 2 頁(yè) /共 33 頁(yè) ................................................ 20 ....................................... 20 ....................................................... 21 ................................................ 21 .................................................. 22 ................................................ 23 ............................................ 24 .................................................. 24 ...................................................... 24 4 污水處理廠總體布置 ...................................................... 24 ......................................................... 24 .............................................. 24 .............................................. 25 ........................................................... 25 ................................................ 25 ................................................ 25 5 土建與公用工程 .......................................................... 26 ........................................................... 26 ........................................................... 26 ........................................................ 26 .............................................. 26 ........................................................ 27 6 投資估算 ................................................................ 27 ................................................. 27 .................................................... 27 .................................................... 27 .................................................... 27 ........................................................... 27 7 勞動(dòng)定員與運(yùn)行費(fèi)用 ...................................................... 28 ........................................................... 28 .................................................... 28 .................................................... 28 .................................................... 28 ........................................................... 29 ............................................ 29 ................................................ 29 總 結(jié) .................................................................... 30 致 謝 .................................................................... 30 參考文獻(xiàn) .................................................................. 30 附錄： .................................................................... 31 第 1 頁(yè) /共 33 頁(yè) 某城市污水處理廠初步設(shè)計(jì) 摘 要 本設(shè)計(jì)是 某開(kāi)發(fā)區(qū)污水處理廠的初步設(shè)計(jì)和施工圖設(shè)計(jì)。該處理廠處理城市污水 ,水質(zhì)較復(fù)雜： 五日生化需氧量（ BOD5）： 200mg/L； 懸浮物（ SS）： 370mg/L； 化學(xué)需氧量（ CODcr）： 450mg/L； NH3N： 15mg/L； 處理后的水質(zhì)要求： BOD5≤ 14mg/L； SS≤ 30mg/L； CODcr≤ 63mg/L； NH3N≤ 3mg/L； 根據(jù)設(shè)計(jì)要求和求新的思想，該污水處理工程進(jìn)水中氮含量均偏高，在去除 BOD5和 SS的同時(shí)，還需要進(jìn)行脫氮處理，故采用當(dāng)代水處理工藝中較流行的三溝式氧化溝工藝。該工藝綜合了以往工藝的優(yōu)點(diǎn)，而且該系統(tǒng)可進(jìn)行硝化，反硝化反應(yīng)，從而達(dá)到生物脫氮的功能。該系統(tǒng)具有高效，節(jié)能的特點(diǎn)，且耐沖擊負(fù)荷高，出水水質(zhì)好。因此 ,更具有廣泛的適應(yīng)性，完全適合本設(shè)計(jì)的實(shí)際要求。本工藝的主要構(gòu)筑物包 括格柵、污水泵房、曝氣沉砂池、氧化溝、二沉池、接觸消毒池、濃縮池、污泥脫水機(jī)房等。 本設(shè)計(jì)采用了三溝式氧化溝主體工藝，工藝流程簡(jiǎn)單，省去了初沉池和污泥消化系統(tǒng)，節(jié)省了基建投資和運(yùn)行費(fèi)用，同時(shí)曝氣設(shè)備和構(gòu)造形式多樣，運(yùn)行靈活，管理方便，保證出水達(dá)到污水排放標(biāo)準(zhǔn)，做到了水資源的合理利用。 [關(guān)鍵詞 ]: 三溝式氧化溝 格柵 濃縮池 泵房 新工藝 二沉池 第 2 頁(yè) /共 33 頁(yè) Abstract It is a preliminary design and construction drawing for the sewage treatment plant development zone. This plant treat municipal sewage, water quality is more plicated: Suspended substance (SS ): 200mg/L。 The biochemical oxygen demand of five days(BOD5 ): 200mg/L。 The chemical oxygen demand (CODcr ): 400mg/L。 NH3N: 40mg/L。 Treated water quality is required: BOD5≤20mg/L。 SS≤20mg/L。 NH3N≤3mg/L。 According to the designing requirement and thought o