| 悬浮好氧生物膜A2O工艺处理城市污水的试验研究 |
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| 引用本文： | 王建华,彭永臻,陈永志.悬浮好氧生物膜A2O工艺处理城市污水的试验研究[J].中南大学学报(自然科学版),2011,42(12). |
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| 作者姓名： | 王建华 彭永臻 陈永志 |
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| 作者单位： | 北京工业大学水质科学与水环境恢复工程重点实验室,北京,100124 |
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| 基金项目： | 国家“十一五”重大科技专项课题(2008ZX07317-007-105); 北京市属高等学校人才强教计划高层次人才资助项目(PHR20090502) |
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| 摘 要： | 为了解决A2O工艺生物脱氮除磷不稳定、出水氮磷难以达标的问题,在A2O工艺好氧段添加悬浮式生物填料以保证高质量浓度的硝化细菌及高硝化率.考察不同COD与总氮质量浓度比x、旁流比对工艺脱氮和除磷的影响.此外,在COD与总氮质量浓度比较低条件下对装置进行了改装,即在厌氧段前添加了一段预缺氧段,使其达到深度脱氮除磷的效果.试验结果表明:当进水x=3.6～8.1,COD,TN和TP去除率根据硝化液回流比的不同而不同,x和硝化液回流比越高,出水硝态氮越低；当x为8.1,硝化液回流比为300％时,脱氮除磷效果最好,其出水硝态氮质量浓度仅为4.23 mg/L.当COD与总氮质量浓度比较低时,TP的去除率较低,当x＞4.5时,磷的去除率几乎为100％.A2O系统中生物膜硝化作用占总硝化作用的81.6％,而活性污泥硝化作用只占18.4％.这说明生物膜具有良好的硝化作用.
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| 关 键 词： | 悬浮好氧生物膜A2O工艺 碳氮比 硝化液回流比 脱氮除磷 |
Experimental research on suspended aerobic biofilm A~2O system for treating domestic wastewater |
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| WANG Jian-hua
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PENG Yong-zhen
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CHEN Yong-zhi.Experimental research on suspended aerobic biofilm A~2O system for treating domestic wastewater[J].Journal of Central South University:Science and Technology,2011,42(12). |
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| Authors: | WANG Jian-hua PENG Yong-zhen CHEN Yong-zhi |
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| Institution: | WANG Jian-hua,PENG Yong-zhen,CHEN Yong-zhi (Key Laboratory of Beijing Water Quality Science and Water Environment Recovery Engineering,Beijing University of Technology,Beijing 100124,China) |
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| Abstract: | In order to solve the instability of removing nitrogen and phosphorus process in A2O,the high effluent nitrogen and phosphorus concentration issues,fluidized immobilization media were added to the aerobic reactor to maintain a high concentration of nitrifying bacteria and nitrification rate.The effect of different carbon loading,carbon sources and filing carbon modes on the process of nitrogen and phosphorus were studied.In addition,on the condition of the low concentration ratio of COD to TN,the device was... |
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| Keywords: | suspended aerobic biofilm A2O process carbon and nitrogen ratio nitrification liquid reflux ratio nitrogen and phosphorus removal |
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