【摘要】 利用天然斜发沸石作为吸附剂,进行沸石静态吸附性能进行试验及分析.由试验结果可知,沸石对铵离子具有很强的选择性离子交换和吸附能力.在10min时,锥形瓶中氨氮的浓度为1.31mg/L,沸石对氨氮的去除率为73.8%;在20min时,锥形瓶中氨氮的浓度为0.96mg/L,沸石对氨氮的去除率为80.8%;在30min时,锥形瓶中氨氮的浓度为0.65mg/L,沸石对氨氮的去除率为87%;30min以后,沸石对氨氮的去除率增加不大.沸石和含氨氮的溶液发生吸附作用和离子交换作用之后,会造成其出水pH升高.沸石对微污染河水的CODMn的去除率为2.89%~3.78%,对微污染河水的UV254的去除率为5.41%~6.82%.更多还原

【Abstract】 Using natural clinoptilolite as adsorbent,zeolite static adsorption is experimented and analyzed.The test result shows that zeolite has a strong selective ion exchange and adsorption capacity for the ammonium ion.Within 10 min,ammonia nitrogen concentration in the conical flask is1.31mg/L,the removal rate of zeolite for ammonia nitrogen is 73.8%;In 20 min,ammonia nitrogen concentration in the conical flask is 0.96mg/L,the removal rate is 80.8%;In 30 min,ammonia nitrogen concentration in the conical flask is 0.65 mg/L,the removal rate is 87%;After 30 min,the removal rate has not increased greatly.After the adsorption and ion exchange between zeolite and liquid containing ammonia nitrogen,the water pH will increase.The removal rate of Zeolite for CODMn of slightly polluted river is 2.89%~3.78%,and for UV254 of slightly polluted river,the removal rate is 5.41%~6.82%.更多还原