[1]赵俊娜.低负荷运行时内回流比对A2O工艺脱氮的影响[J].中国给水排水,2022,38(5):81-83.
　ZHAOJun-na.Effect of Internal Reflux Ratio on Nitrogen Removal in A2O Process under Low Load Operation[J].China Water & Wastewater,2022,38(5):81-83.
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低负荷运行时内回流比对A2O工艺脱氮的影响

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第38卷 期数: 2022年第5期 页码: 81-83 栏目: 出版日期: 2022-03-01
Title:
Effect of Internal Reflux Ratio on Nitrogen Removal in A2O Process under Low Load Operation
作者:
赵俊娜
（沧州市供水排水集团有限公司，河北 沧州 061000）
Author(s):
ZHAO　Jun-na
（Cangzhou Water Supply and Drainage Group Co. Ltd.， Cangzhou 061000， China）
关键词:
低负荷运行;  内回流比;  A2O;  碳源;  脱氮
Keywords:
low load operation;  internal reflux ratio;  A2O;  carbon source;  nitrogen removal
摘要:
考察了低负荷运行情况下，内回流比对A2O工艺脱氮效果及碳源投量的影响。结果表明，内回流比由400%降至200%时，缺氧池出水NO3--N浓度由5 mg/L降至2 mg/L左右，该过程大约需要6 h。相比于内回流比为400%，内回流比为200%时，在碳源投量相同的条件下，总氮去除率提高22.4%；在好氧池出水NO3--N浓度相同的条件下，碳源投量节约13.8%。
Abstract:
The effects of internal reflux ratio on nitrogen removal efficiency and carbon source dosage of A2O process under low load operation were investigated. When the internal reflux ratio was reduced from 400% to 200%, NO3--N in the effluent of anoxic tank decreased from 5 mg/L to approximately 2 mg/L, and the process lasted for about 6 hours. Under the same carbon source dosage, compared with internal reflux ratio of 400%, the total nitrogen removal efficiency increased by 22.4% when the internal reflux ratio was 200%. The carbon source dosage could be saved by 13.8% when the same NO3--N in the effluent of the aerobic tank was maintained.

相似文献/References:

[1]李航,董立春,吕利平.低C/N值污水强化生物脱氮性能研究[J].中国给水排水,2022,38(7):80.
　LIHang,DONGLi-chun,LüLi-ping.Enhanced Biological Nitrogen Removal Performance of Low Carbon to Nitrogen Ratio Wastewater[J].China Water & Wastewater,2022,38(5):80.

更新日期/Last Update: 2022-03-01