| 改性沸石去除废水中Zn^2＋的试验 |
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| 引用本文： | 朱友利,施永生. 改性沸石去除废水中Zn^2＋的试验[J]. 净水技术, 2011, 30(2): 42-45 |
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| 作者姓名： | 朱友利 施永生 |
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| 作者单位： | 昆明理工大学建筑工程学院,云南,昆明,650500 |
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| 摘 要： | 采用NaCl-MnO2联合的方式对天然斜发沸石进行改性,在静态条件下,对改性斜发沸石处理模拟含锌废水进行了试验研究,考察了吸附时间、吸附剂投量、Zn^2＋初始浓度和pH对改性斜发沸石吸附Zn^2＋的影响。结果表明：当温度为25℃、pH为5.0～6.0、Zn^2＋初始浓度≤50 m g/L时,按锌与改性斜发沸石质量比为1：40投加改性斜发沸石进行处理,Zn^2＋去除率可达90%以上,模拟含锌废水经改性沸石处理后,水中锌含量低于国家排放标准。改性斜发沸石对Zn^2＋的吸附规律符合Langm uir吸附等温线和准二级动力学模型,相关系数分别为0.927 5和0.999 2。
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| 关 键 词： | 改性斜发沸石 Zn^2＋ 吸附 废水处理 |
Experiment for Removal of Zn2+ in Wastewater by Modified Clinoptilolite |
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| Zhu Youli,Shi Yongsheng. Experiment for Removal of Zn2+ in Wastewater by Modified Clinoptilolite[J]. Water Purifcation Technology, 2011, 30(2): 42-45 |
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| Authors: | Zhu Youli Shi Yongsheng |
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| Affiliation: | (Faculty of Civil Engineering and Architecture,Kunming University of Science and Technology,Kunming 650500,China) |
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| Abstract: | Natural clinoptilolite was modified by NaCl-MnO2.The treatment of zinc-containing wastewater by modified clinoptilolite was studied under static state.The efficiency of adsorption time,modified clinoptilolite dosage,initial concentration of Zn^2＋ and pH on Zn^2＋ adsorption were investigated.The results show that removal efficiency of Zn^2＋ is over 90 % when the quality ratio of zinc to modified clinoptilolite is 1：40,the concentration of Zn^2＋ is less than 50 mg / L,pH is 5-6 and temperature is 25 ℃ in the wastewater.The adsorption law conforms to Langmuir adsorption isotherm and pseudo-second-order kinetic,correlation coefficient are 0.927 5 and 0.999 2,respectively. |
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| Keywords: | Zn2+ |
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