基于全流程分析的低碳氮比进水污水处理厂运行调控

李怀波; 郑凯凯; 王燕; 高俊贤; 王硕; 李激

doi:10.13205/j.hjgc.202103014

基于全流程分析的低碳氮比进水污水处理厂运行调控

doi: 10.13205/j.hjgc.202103014

李怀波¹,
郑凯凯^1,2,
王燕^1,2,
高俊贤¹,
王硕^1,3,4,
李激^1,3,4, ,

1. 江南大学环境与土木工程学院, 江苏无锡 214122;
2. 无锡普汇环保科技有限公司, 江苏无锡 214028;
3. 江苏省厌氧生物技术重点实验室, 江苏无锡 214122;
4. 江苏高校水处理技术与材料协同创新中心, 江苏苏州 215009

基金项目:

工业聚集区污染控制与尾水水质提升技术集成与应用（2017ZX07202-001-004）。

详细信息

作者简介:
李怀波(1995-),男,硕士,主要研究方向为污水处理。869362497@qq.com

通讯作者:
李激(1970-),女,博士,教授,主要研究方向为水污染控制与资源化。liji@jiangnan.edu.cn

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出版历程
- 收稿日期: 2020-03-10
- 网络出版日期: 2021-07-19

OPERATION REGULATION OF WASTEWATER TREATMENT PLANT WITH LOW CARBON-TO-NITROGEN RATIO INFLUENT BASED ON WHOLE PROCESS ANALYSIS METHOD

LI Huai-bo¹,
ZHENG Kai-kai^1,2,
WANG Yan^1,2,
GAO Jun-xian¹,
WANG Shuo^1,3,4,
LI Ji^{1,3,4
, ,}

1. School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China;
2. Wuxi Puhui Environmental Protection Technology Co., Ltd, Wuxi 214028, China;
3. Jiangsu Key Laboratory of Anaerobic Biotechnology, Wuxi 214122, China;
4. Jiangsu Collaborative Innovation Center of Water Treatment Technology and Materials, Suzhou 215009, China

摘要

摘要: 为使某污水处理厂出水达标排放，对该厂进行了全流程测试，分析其主要污染物沿工艺流程分布特征以及活性污泥特性，评估工艺运行现状，为该污水处理厂优化调控提供基础数据。研究发现，该厂进水ρ（BOD₅）/ρ（TN）仅为2.45，属于典型的低碳氮比进水。此外，通过活性污泥特性测试发现，反硝化潜力为9.0 mg/（g·h），反硝化菌群相对丰度较高。进水碳源不足及外部碳源投加位点设置不合理是该厂无法实现TN达标排放的主要原因。在采取改变碳源投加位点、减小好氧池末端曝气量、增加碳源投加量等措施后，出水ρ（TN）由32.0 mg/L降至12.7 mg/L，实现了TN的达标排放；此外，厌氧释磷潜力由1.3 mg/（g·h）提升至2.6 mg/（g·h），生物除磷能力也有了较大提升。研究提供了一种解决污水处理厂出水水质超标问题的思路，可为含低碳氮比进水的城镇污水处理厂运行调控及稳定达标提供参考。
- 低碳氮比 /
- 碳源投加位点 /
- 全流程测试 /
- 调控措施
Abstract: In order to make the effluent of a wastewater treatment plant(WWTP) reach the emission standard, the whole process test was carried out. After analyzing the changes of pollutants along the process as well as the characteristics of activated sludge and assessing the current status of process operation, basic data for optimal regulation was provided. The study found that the BOD₅ to total nitrogen (TN) ratio of the influent was only 2.45, which belonged to low carbon-to-nitrogen ratio influent. In addition, the activated sludge characteristics test found that the denitrification potential was 9.0 mg/(g·h), and the relative abundance of denitrifying bacteria was high. Therefore, insufficient carbon source in the influent and unreasonable dosing site of external carbon source were the main reasons for the poor nitrogen removal effect of the WWTP. The total nitrogen of the effluent was reduced from 32.0 mg/L to 12.7 mg/L by changing the carbon source dosing site, reducing the aeration volume of the biochemical reaction tank and increasing the amount of carbon source dosing, which realized the standard discharge of total nitrogen. In addition, the anaerobic phosphorus release potential increased from 1.3 mg/(g·h) to 2.6 mg/(g·h), which meant that the biological phosphorus removal capacity had also been greatly improved. This study provided a way to discover and solve problems in WWTPs with effluent exceeding the standard, which provided references for controlling operation and reaching standard for discharge of WWTPs with low carbon-to-nitrogen ratio influent.
- low carbon-to-nitrogen ratio /
- carbon source dosing site /
- whole process test /
- control measures

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