污水管道沉积底泥污染物利用潜力分析  

Analysis of Utilization Potential of Sediment Pollutants Deposited in Sewage Pipelines

作　　者：穆莹 高晨晨 孙永利 李思雨 郑兴灿 李鹏峰 张文安 MU Ying;GAO Chen-chen;SUN Yong-li;LI Si-yu;ZHENG Xing-can;LI Peng-feng;ZZHANG Wen-an(China Constrution Technology Consulting Co.Ltd.,Beijing 100120,China;North China Municipal Engineering Design&Research Institute Co.Ltd.,Tianjin 300074,China)

机构地区：[1]中国建设科技集团股份有限公司,北京100120 [2]中国市政工程华北设计研究总院有限公司,天津300074

出　　处：《中国给水排水》2023年第7期114-119,共6页China Water & Wastewater

基　　金：中国建设科技集团科技创新基金-重大科技攻关项目(Z2022C02);住房和城乡建设部研究开发项目(2022-K-166);中国建设科技集团科技创新基金-青年基金资助项目(Z2021Q09)。

摘　　要：以华北地区某城市污水管道沉积底泥为研究对象,在分析底泥中碳、氮、磷和VSS/SS等常规污染物含量及其组分占比的基础上,探索城市污水管道沉积底泥污染物向上覆水溶出的条件及其碳源应用于污水处理的潜力。结果表明:污水管道沉积底泥污染物中碳、氮、磷含量较高,且具有高COD/TN、高COD/TP特征,比值分别达到37.8和180.4,且BOD_(5)/TN和BOD_(5)/TP分别达到8.4和40.3;适宜的搅拌-沉淀作用能够实现沉积底泥中可生物利用碳源的高效提取,同时上覆水中的BOD_(5)/TN和BOD_(5)/TP可分别提升至11.2和48.4,有机组分占比从35%提高至52%。This paper analyzed the content and proportion of conventional pollutants such as carbon,nitrogen,phosphorus and VSS/SS in the sediment from a municipal sewage pipeline in North China,and explored the dissolution conditions of sediment pollutants to overlying water in the municipal sewage pipeline and the utilization potential of carbon sources for sewage treatment.The content of carbon,nitrogen and phosphorus in the sediment from the sewage pipeline was high and characterized by high COD/TN and COD/TP(37.8 and 180.4).In addition,the BOD_(5)/TN and BOD_(5)/TP were 8.4 and 40.3,respectively.Proper stirring-sedimentation process achieved efficient extraction of biodegradable carbon sources from the sediment.The BOD_(5)/TN and BOD_(5)/TP in overlying water increased to 11.2 and 48.4,respectively,and the proportion of organic components increased from 35% to 52%.

关 键 词：污水管道 沉积底泥 污染物特征 碳源可利用性 

分 类 号：TU992[建筑科学—市政工程]