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Orthogonal Experiment of Modified Zeolite for Wastewater Treatment

In order to improve ammonia removal capability from wastewater, zeolite was modified in this paper. Some results for virgin zeolite were revealed by SEM, and its structure showed some ions such NH4+ enter into the pore way in the zeolite. The best results could be attained by combined modification with orthogonal experiment. The adsorption capacity of modified zeolite could be reach mean value of 137.14meq/100g, which was 1.8 times than virgin zeolite. The results of bench scale experiments showed that the data in the experiments were in line with Langmuir isotherms for ammonium ion absorbed onto modified zeolite. So the modified zeolite was suggested as a suitable material for adsorbing ammonia of wastewater.