四川环境2025，Vol.44Issue(1)：101-108,8.DOI:10.14034/j.cnki.schj.2025.01.015
南京市典型污水处理厂进出水重金属含量的时间分布特征
Time Distribution Characteristics of Heavy Metal in Influent and Effluent of Typical Sewage Treatment Plants in Nanjing City
摘要
Abstract
In order to investigate the time distribution characteristics of heavy metal in wastewater treatment plants(WTP)in Nanjing,three wastewater treatment plants of different types were selected for the study to monitor the influent and effluent samplesfor five consecutive months,with the changes of heavy metal content and water quality indexes in wastewater treatment plants analyzed.The results showed that the heavy metal in the influent had obvious time distribution characteristics,among which the heavy metal in influent water of WTP 2 decreased month by month,and that of WTP 3 and WTP 1 reached the lowest in July(62.9 μg/L)and August(83.6 μg/L),respectively.The pH value and ammonia nitrogen(NH4+-N)in the influent of each plant were stable,while the total phosphorus(TP)and chemical oxygen demand(COD)fluctuated with time.In addition,the best heavy metal treatment effect was observed in WTP 2,but the removal effect was affected by time variation to some extent,the heavy metal removal rate was stable in WTP 1,the heavy metal removal efficiency of WTP 3 varied considerably in June(7.99％)compared with that of May(61.21％),and the lowest rate was observed in July(-97.63％),which was significantly affected by the time variation.关键词
重金属/污水处理厂/时间特性Key words
Heavy metals/sewage treatment plant/time characteristics分类
环境科学引用本文复制引用
刘军,武宇峰,黄娟,吕婷,陈鸣..南京市典型污水处理厂进出水重金属含量的时间分布特征[J].四川环境,2025,44(1):101-108,8.基金项目
南京市环保专项资金(2022-专项-020). （2022-专项-020）
