The Experimental Study On Modification Activated Carbon For The Adsorption Of2,4,6-TCP In Tap Water And Loaded2,4,6-TCP Carbon Microwave Regeneration

Chlorophenols organic compounds feature an important chemical raw materials,intermediates and organic solvent.They are non-biodegradative. Therefore,it is difficult to effectively dispose wastewater containing such substances by using conventional techniques, such as biological or physicochemical treatment. For this reason, over the years their elimination and degradation have been the theme of research in development of water quality and the water treatment process. Adopting active carbon adsorption to remove chlorophenols substances has been a focus for researchers. The microwave boasts easy control, quick heating, good selectivity. In recent years,it has been widely used in active carbon regeneration process. This article takes2,4,6-TCP as the research object, studying on the dynamic adsorption of iron and manganese modified active carbon to remove water2,4,6-TCP and contained2,4,6-TCP active carbon microwave regeneration. The results are as follows:1、 Using deionized water to compound low concentrations of2,4,6-TCP watery can obtain a dynamic adsorption curve. Respectively, using deionized water and tap water to the preparation of low-concentration solution of2,4,6-TCP dynamic adsorption, Using formaldehyde oxime spectrophotometry and phenanthroline spectrophotometry measurement of dynamic adsorption process, Entire dynamic adsorption process,Modifier FeNO3、CH3COOMn don’t leak at all.2、Respectively, using deionized water and tap water to the preparation of low-concentration solution of2,4,6-TCP dynamic adsorption,Under the same conditions, The tap water both breakthrough time and exhaustion time are slightly earlier than pure water, Entire dynamic adsorption process,The carbon column is not clogging. The dynamic adsorption influenced by many factors, In the allowable error range, Tap water with deionized water adsorption breakthrough curves are basically the same.3、GACM-0(regeneration process does not contain any gas) method multiple regeneration effect worse than GACM-N2Act (regeneration process contained nitrogen).Both the regeneration rate and the removal rate, the former compared with the latter low.After6times of regeneration, GACM-N2regenerated rate and the removal rates are92%and65%, and the rate of quality change is less than5%, It’s regeneration is more thoroughly than GACM-0.4、Increasing the microwave power can significantly increase the amout of activated carbon adsorption at the beginning, When microwave power continue to increase, the amount of activated carbon adsorption continues to increase,but the growth rate is lower; with the extension of the time of microwave irradiation or increasing activated carbon amount or the amount of gas,the amount of activated carbon adsorption, but after more than a certain value, the amount of activated carbon adsorption declined. It’s shows that the microwave power, the amount of activated carbon irradiation time, the amount of gas all have impact on microwave regeneration.5、The orthogonal experiments show that the four factor: microwave power, irradiation time, carrier gas, the amount of activated carbon, follow the sequence order: microwave irradiation time> microwave power activated carbon amount> amount of gas, The best regeneration conditions is microwave power600W, irradiation time8min,the amount of activated carbon8g amount of gas0.1m3/h.6、Under the optimal regeneration conditions,8regenerated the adsorption amount decreased by only5.92%afer8times regention.2,4,6-TCP removal rate is still more than93%, and the total carbon loss rate is very low.microwave regeneration technology to obtain better treatment effect.