【正文】 DO was kept as 2 mg/L in oxygen demanding area and kept as under1mg/L in anoxygen area, after 12 d run, biofilm formation was over, theremoval effciencies of COD and NH3N were up to % and 95% respectively,sludge cultivation was over. The system starts to run normally, dynamic runingphase with different HRT was tested firstly. Based on the determination of thebest HRT, the removal efficiency of HOD for the municipal wastewater wasinvestigated under the best HRT.The experimental result of dynamic runing phase show that theconcentration of COD, BOD5 and NH3N in effluent of HOD were less than thedrainage standards with 100 mg/L, 30 mg/L and 15 mg/L respectively, when theywere ~504 mg/L, ~ mg/L and ~ mg/L in urbansewage and HRT reduced from 55 h to 10 h. the highest loading rates were kgCOD/kgMLVSSd and kgNH3N/kgMLVSSd., more high pollutants removal efficiency and more highrunning stability was put up.The influence of some factors such as temperature, pH, alkalinity, dissolvedoxygen, SRT and the type of medium was discussed. According to theanalysis,the suitable parameters of HOD process were: temperature kept as20~30℃, pH ~8, oxygen demanding area DO＞2 mg/L, anoxygen area DO＜1 mg/L, SRT 30~50 d, HRT 15~25 h.Keywordsurban sewage, wastewater treatment, hybrid oxidation ditch, biofilmII哈爾濱工業(yè)大學(xué)工學(xué)碩士學(xué)位論文目錄摘要 ...............................................................................................................................IAbstract ....................................................................................................................... II第 1 章 緒論 ................................................................................................................ 1 課題背景 ........................................................................................................... 1 水資源現(xiàn)狀 ................................................................................................ 1 污水排放及水污染狀況 ............................................................................ 2 污水生物處理及氧化溝工藝 .................................................................... 2 氧化溝污水處理技術(shù)的發(fā)展與現(xiàn)狀 ............................................................... 4 國(guó)內(nèi)外研究進(jìn)展簡(jiǎn)介 ................................................................................ 4 氧化溝工藝的研究現(xiàn)狀 ............................................................................ 5 氧化溝技術(shù)的特征與優(yōu)缺點(diǎn) ........................................................................... 7 氧化溝技術(shù)特征 ........................................................................................ 7 氧化溝工藝的優(yōu)點(diǎn) .................................................................................... 8 氧化溝技術(shù)的缺點(diǎn) .................................................................................. 11 課題來(lái)源及主要研究?jī)?nèi)容 ............................................................................. 11 課題來(lái)源 .................................................................................................. 11 主要研究?jī)?nèi)容 .......................................................................................... 11第 2 章 復(fù)合式氧化溝模型設(shè)計(jì)與實(shí)驗(yàn)方案 .......................................................... 13 復(fù)合式氧化溝的設(shè)計(jì)與研究思路 ................................................................. 13 對(duì)復(fù)合式氧化溝的認(rèn)識(shí)與思考 .............................................................. 13 課題研究總體方案 .................................................................................. 13 復(fù)合式氧化溝模型的設(shè)計(jì)參數(shù)與填料選擇 ................................................. 14 復(fù)合式氧化溝的設(shè)計(jì)與運(yùn)行控制參數(shù) .................................................. 14 填料選擇 .................................................................................................. 15 模型制作與實(shí)驗(yàn)?zāi)Ｐ拖到y(tǒng) ............................................................................. 19 模型制作 .................................................................................................. 19 實(shí)驗(yàn)?zāi)Ｐ拖到y(tǒng) .......................................................................................... 19 污水水質(zhì)與分析方法 ..................................................................................... 20 污水水質(zhì) .................................................................................................. 20 III 哈爾濱工業(yè)大學(xué)工學(xué)碩士學(xué)位論文 分析項(xiàng)目與分析方法 .............................................................................. 21 本章小結(jié) ......................................................................................................... 22第 3 章 復(fù)合式氧化溝處理城市污水的研究 .......................................................... 23 實(shí)驗(yàn)運(yùn)行與控制 ............................................................................................. 23 復(fù)合式氧化溝的啟動(dòng)與污泥馴化 ................................................................. 24 HRT對(duì)HOD運(yùn)行效能的影響........................................................................ 26 COD去除效果 .......................................................................................... 28 BOD5去除效果 ......................................................................................... 29 NH3N去除效果 ....................................................................................... 30 有機(jī)負(fù)荷對(duì)HOD系統(tǒng)運(yùn)行效能的影響 ........................................................ 30 COD去除效果 .......................................................................................... 32 BOD5去除效果 ......................................................................................... 33 NH3N去除效果 ....................................................................................... 33 復(fù)合式氧化溝工藝系統(tǒng)運(yùn)行分析 ................................................................. 34 影響因素分析 .......................................................................................... 34 生物膜在系統(tǒng)中的作用 .......................................................................... 40 復(fù)合式氧化溝對(duì)污染物去除效果分析 .................................................. 41