【正文】 obvious technical advantage, and has a strong i mpact resistant load ability, has improved BOD5 , the oxidation ditch removal by the second pond w ater after contact disinfection emissions. The sche me is expected to the removal rate of 95% BOD5, SS had to 90%. Considering the sludge dew atering of mechanical safety operation, betw een second pond processi ng structures together after the sludge concentration to mechanical dew atering pressure filtration dehydration, between the after sinotrans. And this process stable in operation and easy ma nage ment, engineering less investment, operation cost is low. This sew age treatme nt plant engineering total investment is 12384 million yuan, sew age total cost is 2985 , about yuan per m3. Sewage effluent is: CODcr acuities 20 mg/L, more than 15 mg/L BO D 5, pH = 69, SS acuities 20 mg/L, NH3 N (10 ℃ ) more than 5 mg/L, TN acuities 12 mg/L (10 ℃ ), effluent into C river. Ke ywords ： Urban se wage Carrouse l 2021 oxidation ditch process nitroge n and phosphorus removal Process Design 目錄 摘 要 ................................................................................................................. I Abstract ...............................................................................................................II 1 前 言 ............................................................................................................ 4 2 文獻(xiàn)綜述 ......................................................................................................... 1 我國(guó)污水處理現(xiàn)狀 ................................................................................ 1 我國(guó)城市污水處理工藝 ......................................................................... 2 污水處理廠優(yōu)化設(shè)計(jì)研究 ...................................................................... 2 歷史回顧 .................................................................................... 2 模型發(fā)展 .................................................................................... 3 存在的問(wèn)題 ................................................................................ 3 Carrousel 氧化溝工藝 .......................................................................... 4 概述 ........................................................................................... 4 Carrousel 氧化溝的結(jié)構(gòu) 和 原理 .................................................... 5 優(yōu)點(diǎn) ........................................................................................... 6 Carrousel 氧化溝演變 .................................................................. 6 3 方案比較 ......................................................................................................... 7 設(shè)計(jì)依據(jù) .............................................................................................. 7 設(shè)計(jì)背景 .................................................................................... 7 設(shè)計(jì)原則 .................................................................................... 7 設(shè)計(jì)依據(jù) .................................................................................... 7 廠址選擇 .............................................................................................. 9 污水處理工藝流程方案比較及選擇 ........................................................ 9 工藝方案分析 ............................................................................. 9 目前常用的城市污水處理技術(shù) ....................................................10 工藝的比選 ..........................................................................................12 4 工藝流程 ........................................................................................................13 5 總平面布置 ....................................................................................................14 水力計(jì)算 .............................................................................................14 高程計(jì)算 .............................................................................................14 6 設(shè)備選擇與計(jì)算 .............................................................................................18 設(shè)計(jì)流量 .............................................................................................18 中格柵 .................................................................................................18 設(shè)計(jì)參數(shù) ...................................................................................18 設(shè)計(jì)計(jì)算 ...................................................................................18 進(jìn)水泵房 .............................................................................................20 細(xì)格柵 .................................................................................................21 設(shè)計(jì)參數(shù) ...................................................................................21 設(shè)計(jì)計(jì)算 ...................................................................................21 沉砂池 .................................................................................................23 設(shè)計(jì)參數(shù) ...................................................................................23 沉 砂 池尺寸 ...............................................................................23 集砂量及排砂設(shè)備 .....................................................................25 曝氣系統(tǒng) ...................................................................................26 氧化溝 .................................................................................................27 設(shè)計(jì)參數(shù) ...................................................................................27 設(shè)計(jì)計(jì)算 ...................................................................................27 二沉池 .................................................................................................33 設(shè)計(jì)參數(shù) ...................................................................................33 設(shè)計(jì)尺寸 ...............................................