电镀废水中含有大量的Zn2+,严重污染环境,危及人类健康,必须进行有效的处理方可排放.为此,在静态条件下,采用含醚键离子交换树脂对含Zn2+的模拟电镀废水进行了吸附处理,探讨了树脂用量、废水pH值、吸附时间、吸附温度对Zn2+去除效果的影响.结果表明:在废水pH值为4.0,Zn2+浓度0~100 mg/L,吸附时间90min,吸附温度25℃下,按Zn2+与含醚键离子交换树脂质量比为1:20投加含醚键离子交换树脂进行处理,Zn2+去除率可达98%以上;含Zn2+的电镀废水经含醚键离子交换树脂吸附后,废水中Zn2+的含量低于国家一级排放标准.
The adsorption of Zn2+ in electro-plating wastewater by ion exchange resin containing ether linkage was studied under static condition. The effects of the dosage of ion exchange resin containing ether linkage, pH value of wastewater, adsorption time and adsorption temperature on the re-moval effect of Zn2+ were investigated. Results show that when the mass ratio of Zn2+ to ion exchange resin containing ether link-age was 1:20, it was feasible to remove Zn2+ from the wastewater with a pH value of 4.0 and Zn2+ concentration of 0 ~100 mg/L at adsorption time of 90 min and temperature of 25 ℃ by a rate of above 98 %. The Zn2+ content of the electroplating wastewater after being treated with the ion exchange resin contai-ning ether linkage was lower than grade 1 discharge standard specified in relevant national standards.
参考文献
[1] | 彭昌盛,孟洪,谷庆宝,徐玉琴,宋存义.化学法处理混合电镀废水的工艺流程及药剂选择[J].水处理技术,2003(06):363-366. |
[2] | 许中坚,吴灿辉,刘芬,邱喜阳.典型铅锌冶炼厂周边土壤重金属复合污染特征研究[J].湖南科技大学学报(自然科学版),2007(01):111-114. |
[3] | 向言词,官春云,黄璜,严明理,彭秀花.3-吲哚乙酸和水杨酸对芥菜型油菜耐受/积累铅的影响[J].湖南科技大学学报(自然科学版),2008(04):103-106. |
[4] | 许中坚,史红文,邱喜阳.铅锌冶炼厂周边蔬菜对重金属的吸收与富集研究[J].湖南科技大学学报(自然科学版),2008(04):107-110. |
[5] | 罗道成,易平贵,陈安国,史红文.改性海泡石对废水中Pb2+、Hg2+、Cd2+ 吸附性能的研究[J].水处理技术,2003(02):89-91. |
[6] | 罗道成,刘俊峰.改性蛭石吸附电镀废水中铜离子的研究[J].材料保护,2006(05):63-65. |
[7] | 罗道成,易平贵,陈安国,胡忠于.腐植酸树脂对电镀废水中重金属离子的吸附[J].材料保护,2002(04):54-56. |
[8] | 罗道成,易平贵,刘俊峰,胡忠于.改性壳聚糖对电镀废水中重金属离子的吸附[J].材料保护,2002(01):11-12. |
[9] | 罗道成,刘俊峰.聚季铵盐聚丙烯酰胺对电镀废水中Ni2+的吸附性能研究[J].材料保护,2007(04):50-52. |
[10] | 罗道成,刘俊峰,陈安国.改性聚丙烯腈纤维对电镀废水中重金属离子吸附的研究[J].材料保护,2005(05):60-62. |
[11] | 罗道成,刘俊峰,张进军.用催化光度法测定电镀废水中的微量锌[J].材料保护,2008(12):75-76. |
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