【正文】 本科畢業(yè)設計 (論文 ) 題目 ： 紅星淀粉廠廢水處理工程設計 摘要 在我國主要的工業(yè)污水排放中，高濃度有機廢水占據(jù)了很大比例 [1]。而在排放高濃度有機廢水中的行業(yè)中，淀粉工業(yè)產(chǎn)生的廢水是其中的大戶；淀粉工業(yè)廢水具有有機物含量高，可生化性好的特點，其 COD 含量一般在在 20xx～ 20xx0mg/l 之間。本設計所處理的某淀粉廠廢水水質為： COD： 68008000mg/L， BOD5： 27003500mg/L ， SS：18003000mg/L ， PH:4— 6；出水要求達到《污水綜合排放標準 》 GB89781996 一級現(xiàn)有標準要求，即 COD200(mg/L) BOD580(mg/L) SS250(mg/L) pH 6～ 9。達到去除率 COD %， BOD %,SS %。 本設計對該淀粉廠產(chǎn)生的高濃度有機廢水的處理工藝進行了詳細分析與對比。在廢水從工廠排出后，經(jīng)格柵過濾，泵房提升后，進入調節(jié)沉淀池調節(jié)水質水量，再由厭氧西安工業(yè)大學畢業(yè)設計 II 工藝 UASB 處理，通過平流式沉淀池和好氧工藝 SBR，最后排出；如此經(jīng)厭氧和好氧兩級處理，工廠排出污水達到國家規(guī)定排放標準。本設計厭氧段選取了 UASB 工藝 ，好氧段選取 SBR 工藝，這倆種工藝具有規(guī)模小，處理效率高，非常適合工廠廢水處理要求等優(yōu)點， UASB 工藝在除去廢水中污染物的同時，厭氧菌分解有機物的同時產(chǎn)生沼氣，可以解決工廠的一部分能源需求，環(huán)保經(jīng)濟性俱佳。 本設計選用工藝具有處理效率高、占地少、經(jīng)濟實用、技術成熟可靠的優(yōu)點：其運行自動化程度高，節(jié)省人力，處理能力穩(wěn)定，適合于流量較小的工業(yè)廢水處理。其經(jīng)濟社會效益顯著。 關鍵詞： 淀粉工業(yè) 。廢水 。UASB。 SBR。 COD。 BOD 西安工業(yè)大學畢業(yè)設計 III Abstract This design is about the starch industry wastewater treatment。 in China39。s major industrial discharges, the high concentration anic wastewater accounted for a large proportion. In the discharge of high concentration anic wastewater industry, starch industry wastewater generated is one of the big。 starch industry wastewater with high anic content, and good biodegradability, the COD content is generally at 20xx ~ 20xx0mg / l between . The design process of a starch factory wastewater its main ponents: COD： 68008000mg/L， BOD5：27003500mg/L ， SS： 18003000mg/L ， PH:4— 6。 effluent can meet the national standard GB8978 5 ～ 9。 Removal of COD 99%, BOD 99%, SS 99%. This paper, the starch factory produces a high concentration anic wastewater treatment process is analyzed in detail and contrast. In the wastewater discharged from the factory, after grid filter, pump increased, the sedimentation tank into the regulator regulate water quality and quantity, and then by the anaerobic process UASB processed through radial flow sedimentation tanks and aerobic process SBR, final discharge。 so by tired of aerobic two treatment meet the national emission standards. The selected design anaerobic UASB process, a good kind of small segments selected SBR process, maybe kind of process has the smallscale, high treatment efficiency, ideal for wastewater treatment plants, etc., UASB process in removing pollutants in wastewater at the same time, anaerobic deposition of anic matter while producing biogas plant can be resolved as part of energy demand, environmental economics and taste. The design uses technology capable of handling high efficiency, small footprint, economical and practical, mature and reliable technology advantages: it runs a high degree of automation, saving manpower, processing power and stability, suitable for smaller flow of industrial wastewater treatment. It has remarkable economic and social benefits. Keywords: Starch Industry。 Wastewater。 UASB。 SBR。 BOD。 COD 西安工業(yè)大學畢業(yè)設計 IV 目錄 摘要 ............................................................................................................................................. I Abstract ................................................................................................................................... III 目錄 .......................................................................................................................................... IV 第一章 緒論 .............................................................................................................................. 1 設計背景 ...................................................................................................................... 1 設計條件 ...................................................................................................................... 1 設計水量的確定 ............................................................................................... 2 污水水質及處理程度 ....................................................................................... 2 表 該淀粉廠的污水水質 .................................................................................... 2 污水處理工藝方案對比 ................................................................................... 3 污水處理工藝選擇 ........................................................................................... 4 項目污水處理工藝流程與達到目標 .............................................................. 6 第二章 格柵的設計說明與計算 .............................................................................................. 8 格柵的設計說明 ......................................................................................................... 8 設計計算 ...................................................................................................................... 8 第三章 調節(jié)池沉淀設計說明與計算 .................................................................................... 10 調節(jié)沉淀池設計說明 ................................................................................................ 10 設計計算 ................................................................................................................. 10 第四章 UASB 設計說明與計算 ............................................................................................. 12 UASB 設計說明 ...................................................................................................... 12 UASB 反應器工藝構造設計計算 .......................................................................... 13 反應器容積計算 ............................................................................................ 13 配水系統(tǒng)設計 ................................................................................................. 14 三相分離器工藝構造設計 ............................................................................. 15 出水渠設計計算 ............................................................................................ 18 UASB 排水管設計計算 ............................................................................... 20 西安工業(yè)大學畢業(yè)設計 V 排泥管的設計計