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碳氮比对颗粒污泥CANON反应器脱氮性能和N2O释放的冲击影响
摘要点击 97  全文点击 43  投稿时间:2018-04-28  修订日期:2018-05-16
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中文关键词  全程自养脱氮(CANON)工艺  颗粒污泥  脱氮性能  N2O  C/N
英文关键词  completely autotrophic nitrogen removal over nitrite (CANON)process  granular sludge  nitrogen removal performance  N2O  C/N
作者单位E-mail
付昆明 北京建筑大学城市雨水系统与水环境省部共建教育部重点实验室, 中-荷污水处理技术研发中心, 北京 100044 fukunming@163.com 
姜姗 北京建筑大学城市雨水系统与水环境省部共建教育部重点实验室, 中-荷污水处理技术研发中心, 北京 100044  
苏雪莹 北京建筑大学城市雨水系统与水环境省部共建教育部重点实验室, 中-荷污水处理技术研发中心, 北京 100044
北京城市排水集团有限责任公司科技研发中心, 北京 100044 
 
廖敏辉 北京建筑大学城市雨水系统与水环境省部共建教育部重点实验室, 中-荷污水处理技术研发中心, 北京 100044  
仇付国 北京建筑大学城市雨水系统与水环境省部共建教育部重点实验室, 中-荷污水处理技术研发中心, 北京 100044  
曹秀芹 北京建筑大学城市雨水系统与水环境省部共建教育部重点实验室, 中-荷污水处理技术研发中心, 北京 100044  
中文摘要
      本文以机氨氮废水为进水,乙酸钠为有机碳源,研究颗粒污泥CANON反应器中不同C/N水质条件下,反应器内的脱氮性能和N2O释放情况,为探索合适的C/N比在高效脱氮的同时实现N2O释放减量化提供理论依据.结果表明,C/N在0~2.0范围内,随C/N的提高,TN去除率和去除负荷基本呈现逐渐升高的趋势,C/N=0时TN在7h内去除量为56.50 mg·L-1,去除率达到49.00%,C/N=2.0时,TN在7h内去除量最高为71.42 mg·L-1,TN去除率最高为59.52%,但是其中CANON对于脱氮的贡献逐渐下降,反硝化作用对于系统脱氮的贡献逐渐上升.当C/N=2.0时,△NO3--N/△TN=0.086,CANON对于系统脱氮的贡献仅为51.48%,反硝化对系统脱氮的贡献为48.52%.C/N在0~2.0范围内,N2O释放量和释放比例随进水C/N增加而降低,C/N=0时,N2O释放量和释放比例最高,分别为3.60 mg和2.13%;C/N=2.0时N2O释放量和释放比例最低且分别为1.61 mg和0.75%.
英文摘要
      To Explore a suitable C/N ratio for efficient nitrogen removal and simultaneously achieving N2O release reduction, ammonia-rich wastewater with sodium acetate as an organic carbon source in a granular sludge completely autotrophic nitrogen removal over nitrite (CANON) reactor under different C/N water conditions were studied to determine the reactor's nitrogen removal performance and N2O release. The results showed that the total nitrogen (TN) removal rate and the removal load tended to increase gradually with the increase of C/N, ranging from 0 to 2.0. When C/N=0, the TN removal rate was 56.50 mg·L-1 in 7 h; the highest TN removal efficiency was 49%. When C/N=2.0, the highest TN removal rate was 71.42 mg·L-1 in 7 h; the highest TN removal efficiency was 59.52%, and the contribution of CANON to nitrogen removal gradually decreased, whereas the denitrification contribution gradually increased. When △NO3--N/△TN=0.086, the contribution of CANON nitrogen removal was only 51.48% and that of denitrification was 48.52%. The N2O release volume and release ratio decreased with increasing C/N. When C/N=0, the N2O release volume and rate were the highest, namely 3.60 mg and 2.13%, respectively. The lowest N2O release volume and rate were 1.61 mg and 0.75%, respectively, when C/N=2.0.

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