基于回流比及MLSS控制的AAO脱氮工艺运行方案模型研究
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摘要
基于AAO工艺脱氮原理,根据氮元素物料平衡方程,建立基于污泥回流比及污泥浓度调节的适应进水水质变化的AAO脱氮工艺调节模型。在武汉某污水处理厂内进行活性污泥工艺中试,结果表明该调节模型运行效果良好;通过过程试验,分析不同进水水质和不同温度情况下AAO脱氮工艺中氮元素的变化情况,提出了模型修正方案,通过调节总回流比及活性污泥浓度来改善脱氮效果。
According to the nitrogen removal principle of AAO nitrogen removal process,an AAO denirtification process adjustment model was established based on conservation of nitrogen.Through sludge reflux ratio and sludge concentration controlling,the modle can help the AAO denirtification process unit make a batter ataption to the change of influent water quality and temperatur.By pilot study of activated sludge process in a Wuhan sewage treatment plant, the operation effect of the regulation model was verified. Through process experiment,the change of nitrogen in AAO denirtification process under different influent water quality and temperature was analyzed,and the model was proposed for better regulatimg the total reflux ratio and activated sludge concentration to improve the denitrification effect.
According to the nitrogen removal principle of AAO nitrogen removal process,an AAO denirtification process adjustment model was established based on conservation of nitrogen.Through sludge reflux ratio and sludge concentration controlling,the modle can help the AAO denirtification process unit make a batter ataption to the change of influent water quality and temperatur.By pilot study of activated sludge process in a Wuhan sewage treatment plant, the operation effect of the regulation model was verified. Through process experiment,the change of nitrogen in AAO denirtification process under different influent water quality and temperature was analyzed,and the model was proposed for better regulatimg the total reflux ratio and activated sludge concentration to improve the denitrification effect.
引文
[1] 中华人民共和国住房和城乡建设部. 2016年城乡建设统计公报[EB/OL]. http://www.mohurd.gov.cn/xytj/tjzljsxytjgb/tjxxtjgb/201708/t20170818_232983.html.
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[4] 熊建新, 王佳伟, 周军, 等. 内外回流比对A2/O工艺生物脱氮的影响[J]. 给水排水, 2008, 34(12): 38-41.
[5] 许方园,李勇,黄勇.内回流比对连续流改进A2/O反应器性能的影响[J].水处理技术,2009,35(8):59-62.
[6] 国家环境保护总局《水和废水监测分析方法》编委会.水和废水监测分析方法[M].北京:中国环境出版社,2002.
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[9] 张自杰.排水工程(下册)[M].北京:中国建筑工业出版社,2004.
[2] 宋连朋,魏连雨,赵乐军,等.我国城镇污水处理厂建设运行现状及存在的问题分析[J]. 给水排水, 2013, 39(3):39-44.
[3] 王宁.基于ASM2D的A2O工艺数学模拟和优化策略研究[D].武汉:武汉理工大学,2011.
[4] 熊建新, 王佳伟, 周军, 等. 内外回流比对A2/O工艺生物脱氮的影响[J]. 给水排水, 2008, 34(12): 38-41.
[5] 许方园,李勇,黄勇.内回流比对连续流改进A2/O反应器性能的影响[J].水处理技术,2009,35(8):59-62.
[6] 国家环境保护总局《水和废水监测分析方法》编委会.水和废水监测分析方法[M].北京:中国环境出版社,2002.
[7] 徐亚同.pH、温度对反硝化的影响[J].给水排水技术动态,1994,2(4):308-313.
[8] 王少坡,彭永臻,王淑莹,等.温度和污泥浓度对短程内源反硝化脱氮的影响[J].环境科学与技术,2005,28(4):85-86.
[9] 张自杰.排水工程(下册)[M].北京:中国建筑工业出版社,2004.