摘    要 为了对氯离子对ACF电吸附Hg2+的影响进行研究，首先要对废水中的汞离子浓度进行测定，并对除汞方法进行一定了解。本文采用活性炭纤维（ACF）对废水中的汞离子进行电吸附。首先采用500ml 的100μg/L，500μg/L，1000μg/L浓度的含汞废水进行实验，确定1000μg/L的含汞废水可以被吸附饱和。再通过改变电压来研究最佳的电吸附电压条件。研究结果表明：在2V电压下活性炭纤维电吸附除汞离子的效果最好，可以达到83。3%的处理效率。最后通过改变氯离子浓度得出水中存在氯离子会对活性炭纤维电吸附除汞产生较大的抑制作用，在0。0018g/ml,0。0036 g/ml,0。0072 g/ml,0。0108 g/ml,0。0180 g/ml氯离子浓度下，吸附率分别为81。1％,80。2％,78。4％,77。5％,74。5％，可见水中氯离子的浓度越大，活性炭纤维电吸附的处理效果就越差。所以在工业生产或者研究实验中应当尽量避免氯离子的进入以免对吸附产生较大的影响，并且在废水处理实际操作时需要控制好电压，适当增加废水在反应器停留时间使汞离子得以充分吸附。85323

In order to study the effect of chloride ion on the adsorption of Hg2+ by ACF, it is necessary to determine the mercury ion concentration in the wastewater and to understand the mercury removal method。 In this paper, activated carbon fibers (ACF) were used to adsorb mercury ions in wastewater。 First, 500ml of 100μg / L, 500μg / L, 1000μg / L concentration of mercury-containing wastewater for the experiment, to determine 1000μg / L of mercury-containing wastewater can be saturated adsorption。 And then by changing the voltage to study the best electrical adsorption voltage conditions。 The results show that the effect of electrospray ionization on the activated carbon fiber is the best, and the treatment efficiency is 83。3%。 Finally, by changing the concentration of chloride ions in the presence of chloride ions in the water will be activated carbon fiber adsorption of mercury to produce a greater inhibitory effect in the 0。0018g / ml, 0。0036 g / ml, 0。0072 g / ml, 0。0108 g / ml, 0。0180 g / ml, the adsorption rates were 81。1%, 80。2%, 78。4%, 77。5% and 74。5% respectively。 The higher the concentration of chloride ions in the water, the worse the treatment effect of the activated carbon fiber was。 Therefore, in the industrial production or research experiments should try to avoid the entry of chloride ions in order to avoid a greater impact on the adsorption, and in the actual operation of wastewater treatment need to control the voltage, the appropriate increase in wastewater retention time in the reactor to allow sufficient adsorption of mercury ions。

毕业论文关键词：活性炭纤维; 电吸附; 除汞; 废水处理; Hg2+; Cl-

Keyword: ACF; Electric adsorption; Removal of mercury; Wastewater Treatment;Hg2+; Cl-

目 录

第一章 引言 3

1。1含汞废水的来源 3

1。2含汞废水的危害 4

1。2。1汞对植物的危害 4

1。2。2汞对动物的危害 4

1。3国内外研究现状 4

1。4现有处理技术 4

第二章 实验材料与研究方法 5

2。1实验材料 5

2。2研究对象 5

2。3技术路线 5

2。4实验方法 6

2。4。1前处理 6

2。4。2实验过程