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| 线路板园区综合废水碱法除铜优化实验 | |
| 引用本文： | 王建芳,刘志刚,沈耀良,朱耀明.线路板园区综合废水碱法除铜优化实验[J].环境工程学报,2012,6(3):860-864. |
| 作者姓名： | 王建芳 刘志刚 沈耀良 朱耀明 |
| 作者单位： | 1. 苏州科技学院环境科学与工程学院,苏州215011／同济大学环境科学与工程学院,上海200092 2. 同济大学城市污染控制国家工程研究中心,上海,200092 3. 苏州科技学院环境科学与工程学院,苏州,215011 |
| 基金项目： | 江苏省六大人才高峰资助项目（2009-19D） |
| 摘 要： | 线路板废水中的铜主要以络合态存在,破络除铜是其处理稳定达标的关键环节。为了降低运行费用和产泥量,同时为后期的工程升级改造提供依据和参考,实验研究了碱法破络除铜最佳pH值、Na2S/Cu摩尔比、反应时间和絮凝剂种类的选择等,并从处理效率、投药成本、污泥产量多方面考核,确定最佳运行条件:以NaOH调节pH到10.5左右,Na2S与进水总铜摩尔比为1.5∶1～2∶1,反应30 min,再加100 mg/L的PAC和3 mg/L的PAM混凝反应,沉淀0.5 h,出水铜浓度低于0.3 mg/L,达到《电镀污染物排放标准》(GB 21900-2008)中的总铜排放标准。 |
| 关 键 词： | 线路板废水 除铜 碱法破络 Na2S/Cu摩尔比 优化 |
Optimization experiment on copper removal of comprehensive wastewater from printed circuit board industrial park by alkaline method |
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| Wang Jianfang,Liu Zhigang,Shen Yaoliang and Zhu Yaoming.Optimization experiment on copper removal of comprehensive wastewater from printed circuit board industrial park by alkaline method[J].Techniques and Equipment for Environmental Pollution Control,2012,6(3):860-864. | |
| Authors: | Wang Jianfang Liu Zhigang Shen Yaoliang and Zhu Yaoming |
| Institution: | 1 (1.School of Environmental Science and Engineering,Suzhou University of Science and Technology,Suzhou 215011,China; 2.School of Environmental Science and Engineering,Tongji University,Shanghai 200092,China; 3.National Engineering Research Center for Urban Pollution Control,Tongji University,Shanghai 200092,China) |
| Abstract: | The copper in printed circuit board(PCB) wastewater mainly exists in complex compound.Breakdown of chelated copper is the key unit in treating PCB wastewater.Various factors were studied,including optimal pH,molar ratio of Na2S/Cu,chemical reaction time,flocculant type,in order to reduce the operating cost and sludge production,also,to provide the reference for further upgrading reconstruction project.Considering the efficiency of copper removal,dosage cost and sludge production together,optimal operating conditions and parameters were determined: the best pH was adjusted to 10.5 by NaOH,the optimal molar ratio of Na2S/Cu was 1.5∶ 1~2∶ 1,reaction time lasted 30 min and it was coagulated by PAC of 100 mg/L and PAM of 3 mg/L.After 0.5 h settlement,Cu concentration of effluent was lower than 0.3 mg/L,which could meet the emission standard of pollutants for electroplating(GB 21900-2008). |
| Keywords: | wastewater from printed circuit board plants copper removal eliminating chelated copper by alkaline method molar ratio of Na2S/Cu optimization |
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