[1]文鹏丽,王佳伟,李东辉,等.大型再生水厂精准脱氮系统设计应用[J].中国给水排水,2025,41(12):109-114.
　WENPeng-li,WANGJia-wei,LIDong-hui,et al.Design and Application of a Precise Nitrogen Removal System in a Large-scale Reclaimed Water Plant[J].China Water & Wastewater,2025,41(12):109-114.
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大型再生水厂精准脱氮系统设计应用

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第41卷 期数: 2025年第12期 页码: 109-114 栏目: 出版日期: 2025-06-17
Title:
Design and Application of a Precise Nitrogen Removal System in a Large-scale Reclaimed Water Plant
作者:
文鹏丽1， 王佳伟1,2， 李东辉2， 张辉2， 刘锟1， 何政1， 李鹏飞2， 李彤1， 张雪婷2
（1.北京北排科技有限公司，北京 100124；2.北京城市排水集团有限责任公司，北京 100044）
Author(s):
WEN　Peng-li1， WANG　Jia-wei1，2， LI　Dong-hui2， ZHANG　Hui2， LIU　Kun1， HE　Zheng1， LI　Peng-fei2， LI　Tong1， ZHANG　Xue-ting2
（1. Beijing Drainage Technology Co. Ltd.， Beijing 100124， China； 2. Beijing Drainage Group Co. Ltd.， Beijing 100044， China）
关键词:
（1.北京北排科技有限公司; 北京 100124; 2.北京城市排水集团有限责任公司; 北京 100044）
Keywords:
reclaimed water plant;  nitrogen removal;  precise control;  carbon source dosing;  low-carbon
摘要:
针对某大型再生水厂出水总氮波动大、碳源投配率高的问题，搭建定制化精准脱氮系统，包括碳源投加精准控制及内回流自动控制两部分，协同实现生物系统脱氮优化。实际运行结果显示，在处理水量较2022年同期高出11.7%且波动增加15.2%的不利条件下，仍取得良好运行效果：出水TN稳定达标，TN去除率提高3.7%，去除率标准方差下降55.2%；二沉池出水硝态氮浓度变异系数下降35.8%，再生水出水TN浓度变异系数下降35.7%；生物池乙酸钠单位水量药耗下降12.6%，全厂去除TN的单位COD下降22.8%。由此可见，该系统可有效保障TN去除效能的稳定性，以及硝态氮、出水TN指标的稳定性，具有显著的节省碳源效果，可为建设污水处理绿色低碳标杆厂提供技术支撑。
Abstract:
To address the issues of high effluent total nitrogen(TN) fluctuations and excessive carbon source dosages in a large?scale reclaimed water plant, a customized precision nitrogen removal system was developed. This system comprises two main components: precise control of carbon source dosing and automated internal reflux control, both aimed at optimizing the biological nitrogen removal process. Operational results demonstrated that, despite a 11.7% increase in treated water volume and a 15.2% rise in fluctuations compared to the same period in 2022, the system achieved stable TN effluent concentrations. The TN removal rate increased by 3.7%, while the standard deviation of TN removal rates decreased by 55.2%. Additionally, the coefficient of variation(CV) for nitrate nitrogen concentration in the secondary sedimentation tank decreased by 35.8%, and the CV for total effluent TN concentration decreased by 35.7%. The system also reduced sodium acetate consumption per unit of water by 12.6% and lowered the overall plant’s COD consumption for TN removal by 22.8%. In summary, the precision nitrogen removal system effectively ensures stable TN removal efficiency and effluent quality while significantly reducing carbon source agent usage. This system provides a robust technical solution for building green and low?carbon benchmark water reclamation facilities.
更新日期/Last Update: 2025-06-17