| 长沙经济技术开发区污水净化中心氧化沟工艺的改进 |
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| 引用本文： | 黄红旗.长沙经济技术开发区污水净化中心氧化沟工艺的改进[J].湖南农业大学学报(自然科学版),2006,32(5):548-551. |
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| 作者姓名： | 黄红旗 |
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| 作者单位： | 长沙经济技术开发区,污水净化中心,湖南,长沙,410100 |
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| 基金项目： | 湘江流域环境治理日元贷款项目 |
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| 摘 要： | 长沙经济技术开发区污水净化中心采用氧化沟工艺，运行3年来，运行稳定，出水水质较好，化学需氧量、生化需氧量、悬浮物平均去除率均在90％以上．但同时存在总氮，总磷处理能力较差，不能达到国家排放标准；污泥沉积严重，较大地影响了氧化沟有效容积以及产生污泥膨胀等问题．提出的措施为：增设泥水分离池、预缺氧池、厌氧池和缺氧池、曝气机上、下游增加导流板、氧化沟底部增加推流器．改造后，出水总氮为6．29mg／L，总磷为1．43mg／L，去除率分别达到46．5％和70．8％．
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| 关 键 词： | 氧化沟 脱氮除磷 污泥沉积 污泥膨胀 |
| 文章编号： | 1007-1032(2006)05-0548-04 |
| 修稿时间： | 2006年6月19日 |
Problems and Countermeasures of Oxidation Ditch in Wastewater Treatment Plant of Changsha National Economic Technical Development Zone |
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| HUANG Hong-qi.Problems and Countermeasures of Oxidation Ditch in Wastewater Treatment Plant of Changsha National Economic Technical Development Zone[J].Journal of Hunan Agricultural University,2006,32(5):548-551. |
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| Authors: | HUANG Hong-qi |
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| Abstract: | Since wastewater treatment plant of Changsha national economic technical development zone working with a oxidation ditch began to work three years age,its effluent has achieved high quality,in which the average COD,BOD,SS removal rates are all above 90%.However,there are such problems as too low TN and TP removal rate,sludge deposit in the bottom of oxidation ditch,and sludge expansion during the operation of the oxidation ditch.Besides their corresponding countermeasures are also presented in this paper.Through improvement,the emission of TN is 6.29 mg/L,TP is 1.43 mg/L,the removal of TN rate is 46.5%,TP is 70.8%. |
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| Keywords: | oxidation ditch nitrogen and phosphor removal sludge deposit sludge expansion |
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