生物质炭对垃圾渗滤液中氨氮去除效果的研究

为了寻找经济、有效的氨氮吸附材料，为物化处理技术在垃圾渗滤液上的运用提供一些实际参考的选择，以生物质炭（木炭）作为吸附材料进行吸附试验，研究木炭投加量、渗滤液初始pH值、吸附时间、氨氮浓度4个因数变化的条件下，木炭对垃圾渗滤液中氨氮的去除率及其吸附动力学特征。结果表明：随着木炭用量的增加，木炭对氨氮的吸附量逐渐增大，木炭投加量为80~160 g/L时，渗滤液中氨氮的去除率达34.27%~39.41%。在最佳pH 10和最佳吸附时间240 min条件下，木炭对渗滤液中氨氮的去除率分别为24.21%、16.91%。木炭对垃圾渗滤液的氨氮有一定的去除效果，其吸附动力学特征符合伪二级动力学方程和颗粒内扩散方程。

The Research of removing Ammonia Nitrogen in Landfill Leachate by Biomass Carbon

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.