Abstract:

In order to search for economic and effective ammonia nitrogen adsorption material, and provide some practical references selection with physicochemical treatment technology in leachate application, the author studied the effects of various parameters, such as dosages, absorption time, initial pH, ammonia nitrogen concentration on removal rate of ammonia nitrogen and its adsorption dynamics. The results showed that with increasing the dosages of charcoal, the adsorption of ammonia nitrogen was increasing. The removal rate of NH3-N was best, which respectively were 34.27%-39.41%, 24.21% and 16.91%, when the dosages of carbon was 80-160 g/L, pH was 10, absorption time was 240 min. Charcoal had certain removal effect of ammonia nitrogen in landfill leachate, its adsorption dynamics characteristics was consistent with the pseudo two order kinetics equation and the intraparticle diffusion equation.