【正文】 哈爾濱理工大學(xué)學(xué)士學(xué)位論文 I 某城市污水處理廠設(shè)計(jì) 摘 要 本設(shè)計(jì)污水來源是該城市中的工礦企業(yè)、居民的日常生活污水以及回流到污水管道中的市區(qū)日常的噴灑及綠化等地表水。設(shè)計(jì)水量為 50000m3/d，其中 40000m3/d 污水經(jīng)過處理后直接外排進(jìn)入當(dāng)?shù)?IV 類地表水體，另外二級(jí)出水中有 10000m3/d 用于中水回用，回用水的用途主要是沖廁、噴灑道路和綠化等。 設(shè)計(jì)原水水質(zhì)為 COD 450 mg/l， BOD5 200 mg/l， SS 200 mg/l， TN 40mg/l， TP 3 mg/l，出水水質(zhì)達(dá)到國(guó)標(biāo) GB189182021 城鎮(zhèn)污水處理 廠一級(jí) A 排放標(biāo)準(zhǔn)，即： COD 50 mg/l， BOD5 10 mg/l， SS 10 mg/l， TN 15mg/l， TP mg/l，回用水水質(zhì)標(biāo)準(zhǔn)參照生活雜用水水質(zhì)標(biāo)準(zhǔn) CJ ， COD 50 mg/l， BOD5 10 mg/l， SS 5 mg/l， NH3N 10mg/l，總大腸桿菌數(shù) 3個(gè) /l。 本設(shè)計(jì)中，在二級(jí)生化處理部分采用 2/AO工藝，其中的構(gòu)筑物有格柵、曝氣沉砂池、沉淀池、曝氣池、接觸池等。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，在系統(tǒng)前端設(shè)有厭氧池，可達(dá)到除磷的目的。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。在中水處理部分采用絮凝池 +斜管沉淀池工藝，構(gòu)筑物有絮凝池、斜管沉淀池、接觸池等。該系統(tǒng)可以完成處理水質(zhì)要求。 關(guān)鍵詞： 污水處理廠設(shè)計(jì)；中水回用；污泥處理 哈爾濱理工大學(xué)學(xué)士學(xué)位論文 II One urban sewage treatment plant designs Abstract This design sewage origin is in this city industry and mining enterprise, inhabitant39。s daily life sewage as well as the backflow to surface waters and so on in sewage conduit urban district daily spraying and afforestation. The amount of water designed is 50000m3/d, 40000m3/d of sewage directly enters the local IV kind of surface water body after processing, moreover in two levels of water leakage has 10000m3/d to use in hitting the water sales mission, returns to the water mainly is flushes the restroom, sprays the path and the afforestation and so on. The quality of the wastewater in designing is thatCOD 450 mg/l， BOD5 200 mg/l， SS 200 mg/l， TN 40mg/l， TP 3 mg/l， The water leakage water quality achieved GB189182021 discharge standard for waste of the wastewater treatment plant in the city level of A discharges the standard, that is： COD 50 mg/l， BOD5 10 mg/l， SS 10 mg/l， TN 15mg/l， TP mg/ quality of the reuse water reference to live mixed water used water quality standard CJ , COD 50 mg/l， BOD5 10 mg/l， SS 5 mg/l， NH3N 10mg/l， the total number of the Backwoods coli 3/l. In this design, it use the technology of 2/AO at the biochemical treatment unite. The constructions have the grill, aerated grit chamber, the sedimentation tank, the aeration basin, the contact pond and so on. The system can nitrification and denitrification, and thereby achieve the biological nitrogen removal functions of the system with frontend anaerobic pond Phosphorus can achieve the objective. The system is highly efficient, energysaving features, and resistance to shock loading, the water quality good. In the treatment of the middle water it uses the technology of flocculation pond + the slope tube sedimentation pond craft. The constructions have the flocculation pond, the slope tube sedimentation pond, the contact pond and so on. All the system can finish the acquirement of the wastewater treatment. Keywords: Sewage treatment plant design。 Water Reuse。 sludge processing 哈爾濱理工大學(xué)學(xué)士學(xué)位論文 III 目 錄 摘要 .......................................................................................................................I Abstract ............................................................................................................... II 第 1 章 緒論 ........................................................................................................ 1 設(shè)計(jì)目的與意義 ....................................................................................... 1 設(shè)計(jì)條件 ................................................................................................... 1 設(shè)計(jì)內(nèi)容 ................................................................................................... 1 設(shè)計(jì)原則 ................................................................................................... 2 成果提交 ................................................................................................... 3 設(shè)計(jì)要求 .................................................................................................. 3 第 2 章 方案的選擇 ............................................................................................ 5 設(shè)計(jì)方案的選擇 ....................................................................................... 5 可行性方案的確定 ............................................................................ 5 污水處理工藝流程的確定 ................................................................ 5 污泥處理部分工藝流程 .................................................................... 6 中水回用部分工藝流程 .................................................................... 6 主要構(gòu)筑物的選擇 ................................................................................... 7 粗格柵、細(xì)格柵 ................................................................................ 7 泵 房 .................................................................................................... 7 沉沙池 ................................................................................................ 7 初沉池與二沉池 ................................................................................ 7 曝氣池 ................................................................................................ 8 接觸池與計(jì)量槽 ................................................................................ 8 濃縮池 ................................................................................................ 9 消化池 ................................................................................................ 9 污泥脫水 ............................................................................................ 9 機(jī)械絮凝池 .................................................................................... 10 斜管沉淀池 .................................................................................... 10 污水處理程度的計(jì)算 ............................................................................. 10 第 3 章 污水處理系統(tǒng)構(gòu)筑物設(shè)計(jì) .................................................................. 12 粗格柵 ..................................................................................................... 12 設(shè)計(jì)參數(shù) .................