摘要
采用LS-40大孔弱酸型阳离子交换树脂,使用模拟废水对树脂投加量、反应pH、接触时间等条件进行优化。结果表明,当pH为6.5~7.5、树脂投加量为16mL/L、反应时间为15min时,氨氮去除效果最佳。同时对模拟氨氮废水和实际废水进行动态吸附对比研究,探究树脂穿透及解吸过程。由于实际废水中阳离子的干扰,废水处理量要比模拟废水减少63%,并且解吸2次后的处理效果也下降60%。
LS-40 macroporous weak acid cation exchange resin was used to optimize the conditions of resin dosage,reaction pH value and contact time with simulated wastewater.The results showed that ammonia nitrogen removal effect was the best when the pH value was 6.5~7.5,resin dosage was 16 mL/L and reaction time was 15 minutes.At the same time,the dynamic adsorption of simulated ammonia-nitrogen wastewater and actual wastewater was compared,and the resin penetration and desorption process was explored.Due to the interference of cations in actual wastewater,the wastewater treatment capacity was 63% less than that of simulated wastewater,and the treatment effect after two desorptions was also reduced by 60%.
引文
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