催化还原法去除废水中的硝酸盐

废水中硝酸盐的含量逐年增加,氮元素含量远远超过了国家排放标准,硝酸盐氮含量超标会造成很大危害,为了减少废水中硝酸盐含量,利用酸性条件下稀硫酸和铝粉产生的氢气作为还原剂脱除硝酸根。探究在硝酸盐脱除过程中,不同pH值,不同氢气产生量条件下,硝酸盐氮脱除的效果。结果表明,在pH值=1的条件下氢气能有效还原硝酸盐氮,最大脱除率为94.5%。     

Study on removal of nitrate nitrogen by Iron-Silver Alloy

With the rapid development of industry,a large number of wastewater discharged from factory production leads to a gradual increase in nitrate content in natural water.Using iron-silver copper alloy as reactant and catalyst can effectively reduce the content of nitrate nitrogen in wastewater.The experimental results show that the loading rate of silver is 3% and pH is 2 at room temperature.The maximum removal rate of nitrate nitrogen is 91.09%.