[1]李惠平,庞维海,谢丽,等.低C/N污水处理过程中有机碳源的特性及转化分析[J].中国给水排水,2022,38(7):69-74.
　LIHui-ping,PANGWei-hai,XIELi,et al.Characteristics and Conversion of Organic Carbon Sources during Treatment of Municipal Wastewater with Low Carbon to Nitrogen Ratio[J].China Water & Wastewater,2022,38(7):69-74.
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低C/N污水处理过程中有机碳源的特性及转化分析

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第38卷 期数: 2022年第7期 页码: 69-74 栏目: 出版日期: 2022-04-01
Title:
Characteristics and Conversion of Organic Carbon Sources during Treatment of Municipal Wastewater with Low Carbon to Nitrogen Ratio
作者:
李惠平1,2， 庞维海1,2， 谢丽1,2， 李芷昕1,2， 张琨3， 刘源3， 赵力3， 沈康4
（1.同济大学 环境科学与工程学院，上海 200092；2.同济大学 长江水环境教育部重点实验室，上海 200092；3.广东粤海水务股份有限公司，广东 深圳 518021；4.兰州交通大学 环境与市政工程学院，甘肃 兰州 730070）
Author(s):
LI　Hui-ping1，2， PANG　Wei-hai1，2， XIE　Li1，2， LI　Zhi-xin1，2， ZHANG　Kun3， LIU　Yuan3， ZHAO　Li3， SHEN　Kang4
（1. School of Environmental Science and Engineering， Tongji University， Shanghai 200092， China； 2. Key Laboratory of Yangtze River Water Environment ， Tongji University， Shanghai 200092， China； 3. Guangdong GDH Water Co. Ltd.， Shenzhen 518021， China； 4. School of Environmental and Municipal Engineering， Lanzhou Jiaotong University， Lanzhou 730070， China）
关键词:
城镇污水;  低C/N;  有机碳源;  平行因子;  深度脱氮
Keywords:
municipal wastewater;  low C/N;  organic carbon source;  parallel factor;  advanced denitrification
摘要:
C/N值是影响污水脱氮效果的主要因素之一，为探究低C/N值城镇污水处理过程中不同特性有机碳源的利用水平，采用三维荧光光谱-平行因子分析技术（3DEEM-PARAFAC），对广东省某污水厂SBR工艺不同处理阶段的水质进行分析。结果表明，3DEEM-PARAFAC技术可有效表征低C/N污水处理过程中有机碳源的特征变化，并解析出4种荧光组分：类色氨酸、氨基酸、腐殖酸类和富里酸类。其中，类色氨酸和氨基酸占比较高，属于易生物降解碳源；腐殖酸类和富里酸类占比较低，属于难生物降解碳源。相关性分析表明，4种荧光组分与COD、TP、NH4+-N和TN指标之间存在显著相关性（p<0.05），其中氨基酸呈现出最显著相关性，是影响脱氮效果的关键物质。
Abstract:
The carbon to nitrogen ratio (C/N) is one of the main factors affecting the nitrogen removal efficiency of wastewater. To investigate the utilization rate of organic carbon sources with different characteristics in low C/N municipal wastewater treatment, the effluent quality in different treatment stages of a SBR process in a wastewater treatment plant in Guangdong Province was analyzed by using three-dimensional excitation emission matrix and parallel factor analysis (3DEEM-PARAFAC). The 3DEEM-PARAFAC technology could effectively characterize the characteristics change of organic carbon sources in the treatment process of low C/N wastewater, and four fluorescent components were identified, namely tryptophan-like, amino acids, humic acids and fulvic acids. Among them, tryptophan-like and amino acids were biodegradable organic carbon sources with high proportion, while humic acids and fulvic acids belonged to recalcitrant organic carbon sources with low proportion. Correlation analysis showed that there were significant correlations between the four fluorescence components and COD, TP, NH4+-N and TN (p<0.05). Among them, amino acids showed the most significant correlation and was the key substance affecting the denitrification efficiency.

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[1]龚本洲,周炯,刘石虎,等.C/N值对短时曝气SBR高标准脱氮除磷效能的影响[J].中国给水排水,2020,36(15):13.
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更新日期/Last Update: 2022-04-01