Study On The Adsorption Treatment Of Chloroform In Water By Macroporous Adsorption Resin

Chloroform is abroad applied in the industry field of chemical, medicine and industry because of it's good extraction property; in the time, chloroform is poisonous, and it is one of a prominence carcinogenic Halohydrocarbon. People in the world have universally paid attention to the form and control chloroform in water. Currently, chloroform can be treated by many methods, and it can be destroyed or reclaimed in the treating process. But new chloride will be formed by all the devastating methods, which can cause new pollution. Also, the reclaim methods can't reclaim total chloroform, and the chloroform concentration in the residual wastewater is far form the discharge standard of chloroform, which cause the waste of resource.Aim at the shortage of the current treatment of chloroform, according to the framework property, adopted the Friedel-Crafts reaction of chloromethylation cross linked polystyrene, synthesize XDA series macroporous resin and tested their adsorption property, selected the best resin to processing chloroform adsorption property experiment in water. In the static adsorption experiment, test the affection to the static adsorption equilibrium through the factors of temperature, pH and salinity. In the dynamic adsorption experiment, study on the effects to the adsorption property through the factors of original concentration, velocity of flow, temperature, pH and salinity. In the desorption experiment, compare of the desorption effect through several desortpion methods. Int the last analyzed the economy of the adsorption treatment organic wasterwater by the macroporous adsorption resin.The results indicated that:(1) The adsorption properity of XDA-1 macroporous resin to chloroform in water according to the Freundilich adsorption isotherm, the equation is Qe=6.070Ce0.3022, attribute to the favorable adsorption equation;(2) Temperature, pH, salinity has effects to the adsorption, there is a preferably linear connection between the temperature and parameter of Freundilich adsorption isotherm; acid and alkali is deleterious to the adsorption; a little of salt has obvious effect to add the adsorption quantity to chloroform in water;(3) The XDA-1 macroporous adsorption resin actualize the chloroform enrichment, the biosorption amount of the organic adsorption achieve 150mg/mL, with the 3-5% inorganic salt, the amount increase to 170mg/mL; Aim to the low-concentration, the velocity of flow can add to 20BV/h;(4) The distillation desorption has a good effects, the reclaim rate above 85%. In this paper, find a new idea of the chloroform treatment in water, the method and idea provide the theoretic basis for chloroform produce wastewater. The method has important significance for the halohydrocarbon and organic wastewater treatment, of Halohydrocarbon has the reference opinion.