| 改性沸石同步深度脱氮除磷的实验研究 |
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| 引用本文： | 段金明,林建清,方宏达,聂斌,巫晶晶,吴国宏.改性沸石同步深度脱氮除磷的实验研究[J].环境工程学报,2009,3(5):829-833. |
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| 作者姓名： | 段金明 林建清 方宏达 聂斌 巫晶晶 吴国宏 |
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| 作者单位： | 1. 集美大学生物工程学院,厦门361021;集美大学环境工程研究所,厦门,361021
2. 集美大学生物工程学院,厦门,361021 |
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| 基金项目： | 福建省自然科学基金资助项目(D0440007)；福建省青年科技人才创新项目(2004J028)；集美大学科研基金项目(ZQ2007012) |
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| 摘 要： | 以氯化铝、硫酸镁为活性剂，采取高温活化，对天然沸石进行改性，并通过正交试验优化了改性工艺。以模拟二级出水为研究对象，考察了改性沸石同步去除水样中氮磷的效果及其影响因素，并对不同温度下改性沸石对磷酸盐和氨氮的吸附平衡和吸附热力学，以及脱氮除磷机理进行了探讨。结果表明，15 min后改性沸石脱氮除磷过程基本完成，其pH值范围与实际污水相符，最佳pH值为8；当投加质量浓度为0.8 g/L时，出水中氨氮浓度和总磷浓度均达到景观环境用水水质标准(GB/T 18921-2002)。改性沸石对氨氮和磷酸盐的吸附均符合Langmuir等温吸附方程。热力学参数ΔG0、ΔH0分别为正值和负值，表明该吸附是一个自发的吸热过程。
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| 关 键 词： | 天然沸石改性 氨氮 磷酸盐 同步去除 等温线 热力学 |
Experimental study on simultaneous removal of ammonium and phosphate in treated wastewater by modified zeolite |
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| Duan Jinming,Lin Jianqing,Fang Hongd,Nie Bin,Wu Jingjing and Wu Guohong.Experimental study on simultaneous removal of ammonium and phosphate in treated wastewater by modified zeolite[J].Techniques and Equipment for Environmental Pollution Control,2009,3(5):829-833. |
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| Authors: | Duan Jinming Lin Jianqing Fang Hongd Nie Bin Wu Jingjing and Wu Guohong |
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| Institution: | 1. School of Bioengineering,Jimei University,Xiamen 361021; 2. Institute of Environmental Engineering, Jimei University, Xiamen 361021,1. School of Bioengineering,Jimei University,Xiamen 361021; 2. Institute of Environmental Engineering, Jimei University, Xiamen 361021,1. School of Bioengineering,Jimei University,Xiamen 361021; 2. Institute of Environmental Engineering, Jimei University, Xiamen 361021,1. School of Bioengineering,Jimei University,Xiamen 361021,1. School of Bioengineering,Jimei University,Xiamen 361021; 2. Institute of Environmental Engineering, Jimei University, Xiamen 361021 and 1. School of Bioengineering,Jimei University,Xiamen 361021 |
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| Abstract: | Modification treatment of natural zeolite was conducted by means of addition of AlCl 3 and MgSO 4 as activator at high temperature.The orthogonal experiments were adopted to optimize the modification technology.The simulative secondary effluent was employed,and efficiencies and their influencing factors of simultaneous removal of ammonium and phosphorus were investigated.Meanwhile the sorption equilibrium at a series of temperatures and the mechanism of modified zeolite was discussed.The results showed that... |
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| Keywords: | modification of natural zeolite ammonium phosphate simultaneous removal isotherm thermodynamic |
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