摘要
随着《电镀污染物排放标准》GB21900-2008的严格实施,电镀废水中总氮的去除逐渐成为了电镀废水处理工程中的一个重难点。广东某电镀园区在废水处理站升级改造工程中采用了两级A/O工艺强化对电镀废水中总氮的去除。工程运行实践表明该工艺可强化电镀废水中总氮的去除效果,当进水总氮浓度为40~100 mg/L时,系统对总氮的平均去除率超过70%,最高可达83%,出水总氮浓度保持在20 mg/L以下。
With the strict implementation of Emission standard for electroplating pollutants,the removal process of total nitrogen gradually becomes a key and difficult point in the electroplating wastewater treatment engineering.As an enhanced process for the removal of total nitrogen from electroplating wastewater,A two-stage A/O process was used in the upgrading project of electroplating industrial district wastewater treatment station,Guangdong Province.The operation practice of the project shows that the process can enhance the removal rate of total nitrogen from electroplating wastewater.When the total nitrogen concentration in the influent is 40-100 mg/L,the average removal rate of total nitrogen in the system is over 70%,and the maximum removal rate is 83%,the total nitrogen concentration in the effluent is kept below 20 mg/L.
作者
朱琼芳
Zhu Qiongfang(Jiangsu Jingyuan Environmental Protection Co.,Ltd.,Guangzhou Branch,Guangzhou 510060,China)
出处
《广东化工》
CAS
2020年第3期145-146,166,共3页
Guangdong Chemical Industry
关键词
电镀废水
缺氧/好氧工艺
总氮
electroplating wastewater
anoxic/oxic process
total nitrogen