活性污泥吸附有机络合铜的研究

摘要本研究主要针对活性污泥作为生物吸附剂在不同pH值、吸附时间、污泥投加量、处理温度等影响因素下对重金属废水的吸附处理。得到如下一些结论：
(1) 活性污泥颗粒在溶液中吸附络合铜最佳pH值为7-9；
(2) 当存在杂质离子时，干活性污泥对络合铜的吸附效率降低。杂质离子浓度越大，络合铜吸附效率越低。
(3) 热力学结果表明，络合铜在活性污泥颗粒上的吸附过程是自发过程(△G<0)，伴随吸热(△H>0)，熵变为正值(△S>0)的化学吸附，较好的符合Freundlich等温吸附方程。
(4) 动力学结果表明，络合铜在活性污泥颗粒上吸附交换过程符合单分子层吸附的机理，该反应为假二级反应。主控步骤为液膜扩散控制，随时间的增加吸附速率逐渐减小。8404
关键词活性污泥生物吸附工业废水
毕业设计说明书（论文）外文摘要
Title Research on adsorption of organic Cu complex by activated sludge
Abstract
The subject mainly studies on the influence of PH value，adsorption time，sludge doses，temperature and other influences of the absorption of heavy metals ions by activated sludge. Some of the conclusions obtained are as follows:
（1）The optimum pH value of adsorption of organic Cu complex in solution by activated sludge particles is 7-9；
（2）The presence of impurity ions reduce the adsorption efficiency of organic Cu complex by the activated sludge. The higher the concentration of impurity ions, the lower adsorption efficiency of the organic Cu complex.
（3）The thermodynamic results show that the adsorption process of the organic Cu complex in the activated sludge particles is spontaneous process (△ G <0), accompanied by endothermic (△ H> 0), entropy becomes positive (△ s> 0) chemical adsorption, in line with the Freundlich isotherm equation.
（4）The kinetic results show that the organic Cu complex exchange adsorption on the particles of the activated sludge process in line with the mechanism of monolayer adsorption, the reaction is pseudo-second-order reaction. Controlling step is liquid film diffusion control, and with time increase the adsorption rate decreased gradually.
Keywords Activated sludge Biosorption Industrial wastewater
目次

1 绪论 1
1.1 引言 1
1.2 金属废水处理方法 1
1.2.1 化学沉淀2
1.2.2 氧化还原处理2
1.2.3 吸附法2
1.2.4 膜分离技术2
1.2.5 离子交换处理法3
1.2.6 溶剂萃取分离3
1.2.7 生物处理技术3
1.3 吸附剂的分类和应用3
1.3.1 物理吸附剂3
1.3.2 化学吸附剂4
1.3.3 矿物材料的应用5
1.3.4 生物吸附剂应用6
1.4 活性污泥吸附机理 6
1.4.1 表面有机络合7
1.4.2 离子交换7
1.4.3 其他机理8
1.5 本课题研究的背景、目的和意义 8
1.5.1 本课程研究的背景和意义8
1.5.2 研究原则和内容8
2 实验部分 10
2.1 仪器与试剂10

2.1.1 干活性污泥10
2.1.2 实验仪器与试剂10
2.2 实验方法10
2.2.1 吸附试验方法10
2.2.2 金属离子去除率、吸附能力计算方法11
2.2.3 络合铜测定方法11
2.2.4 吸附热力学和动力学分析12
3 结果与讨论13 活性污泥吸附有机络合铜的研究:http://www.751com.cn/zidonghua/lunwen_6743.html