1,4-二羟基蒽醌废水中邻苯二甲酸的吸附回收

摘要

Study of adsorption effect of o -Phthalic Acid by DY -001, XB -001 and NDA -404 macrore-ticular resin showed the best treatment. NDA -404 was used for wastewater treatment, at room temperature control, wastewater flow rate 2BV/h, the adsorption rate was above 93%. Used the mixture of cohol and 1mol/L hydrochloric acid (mixed with the ratio of 2 : 1) as desorption solution, the micro-heat conditions to 1. 5BV/h speed of desorption, desorption effects can reach 86%. By heating evaporation, the high purity phthalic acid crystals will be cooled and filtered.%通过研究DY- 001,XB-001,NDA- 404 3种树脂对1,4-二羟基蒽醌废水中邻苯二甲酸的吸附效果,确定了1,4-二羟基蒽醌废水中邻苯二甲酸的回收的最佳工艺条件:选用吸附树脂NDA-404作为废水处理使用,在常温下控制废水的流速为2BV/h,吸附效果到达93％以上；采用酸性乙醇洗脱液(乙醇与1mol/L的盐酸按体积比为2:1)洗脱,在微热的条件下控制流速为1.5BV/h,脱附效果可以达到91.21％；将洗脱液浓缩可得纯度较高的邻苯二甲酸晶体.