[1]王晓磊,押玉荣,吴江渤,等.DN/CN强化脱氮技术在污水厂提标改造中的应用[J].中国给水排水,2020,36(11):15-20.
　WANG Xiao-lei,YA Yu-rong,WU Jiang-bo,et al.Application of DN/CN Enhanced Nitrogen Removal Technology in Upgrading and Reconstruction of Wastewater Treatment Plant[J].China Water & Wastewater,2020,36(11):15-20.
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DN/CN强化脱氮技术在污水厂提标改造中的应用

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第36卷 期数: 2020年第11期 页码: 15-20 栏目: 出版日期: 2020-06-05
Title:
Application of DN/CN Enhanced Nitrogen Removal Technology in Upgrading and Reconstruction of Wastewater Treatment Plant
作者:
王晓磊1,2,3，押玉荣1,2,3，吴江渤1,2,3，李曙光1,2,3，韩墨菲1,2,3，朱涛1,2,3，安少锋1,2,3
嘉诚环保工程有限公司，河北省污水治理与资源化技术创新中心，污水治理与水体修复工程研究中心
Author(s):
WANG Xiao-lei， YA Yu-rong， WU Jiang-bo， LI Shu-guang， HAN Mo-fei， ZHU Tao， AN Shao-feng
Jiacheng Environmental Protection Engineering Co.Ltd. Wastewater Treatment and Resource Reusing Technology Innovation Center of Hebei Province； Wastewater Treatment and Waterbody Remediation Engineering Research Center
关键词:
font-size: 10pt; ">生物滤池; 强化脱氮; 碳氮比; 硝态氮
Keywords:
font-size: 10pt; ">biofilter; enhanced nitrogen removal; carbon to nitrogen ratio; nitrate
摘要:
以某市城镇污水处理厂NO3--N浓度较高的生化出水为研究对象，采用反硝化生物滤池+曝气生物滤池（DN/CN）工艺，研究了碳氮比（C/N值）、进水负荷、温度等对TN去除效果的影响。结果表明，当增加的C/N值为3.6、水力负荷≤9.44 m3/(m2·h)［NO3--N最大负荷为4.8 kg/(m3·d)］时，出水TN满足国标要求（≤10 mg/L）；去除单位质量TN需3.7倍COD，碳源不足会导致NO2--N积累和碳源单耗升高；14 ℃时的TN去除率较19 ℃时下降了约15%；反硝化过程中pH值增量和TN去除量存在一个对应关系，可用于反硝化滤池处理效果的辅助判断。
Abstract:

The effluent contained high nitrate concentration of a bioreactor in a municipal wastewater treatment plant was treated by a process of denitrification and nitrification biofilters (DN/CN), the effects of carbon to nitrogen (C/N) ratio, influent load and temperature on total nitrogen removal were investigated. When C/N ratio increased by 3.6 and hydraulic load was no more than 9.44 m 3 /(m2·h) ［the maximum nitrate load was 4.8 kg/(m3·d)］, the effluent TN met the national standard requirements (≤10 mg/L). Removing per unit mass TN required 3.7 times COD, and insufficient carbon source would lead to accumulation of nitrite and increase of carbon source per unit consumption. TN removal efficiency at 14 ℃ decreased by about 15% compared with that at 19 ℃. A corresponding relationship between pH increment and TN removal amount was developed, which could be used to assist in estimating the treatment efficiency of the denitrification filter.

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更新日期/Last Update: 2020-06-01