活性炭吸附技术与树脂吸附技术处理DIBP废水的对比

采用活性炭吸附技术和树脂吸附技术进行增塑剂DIBP生产废水处理对比试验。结果表明:NDA-66树脂对邻苯二甲酸的吸附效果最好,去除率达93.9%,其次为椰壳活性炭,对增塑剂DIBP生产废水中COD和邻苯二甲酸的去除率分别为57.3%和83%,煤质和果壳活性炭的废水处理效果较差,对COD和邻苯二甲酸的去除率均在20%左右,且活性炭吸附不具有选择性,无法对邻苯二甲酸进行回收,不能产生相应的经济效益。而采用NDA-66树脂吸附处理增塑剂DIBP生产废水,其污染物削减量是活性炭吸附的4~5倍,回收邻苯二甲酸可产生110.8万元/a的经济效益,同时树脂脱附再生容易,可重复利用2年左右,因而具有更大的推广应用价值。

Comparison between resin adsorption and activated carbon adsorption treating DIBP wastewater

Comparison test of activated carbon adsorption technology and resin adsorption technology treating DIBP wastewater was conducted. Results show that resin NDA-66 has the best adsorption effect on phthalic acid, whose removal rate reaches 93. 9%. Followed by coconut shell activated carbon, COD and phthalic acid removal rate were 57. 3% and 83% respectively in waste water of plasticizer. Coal quality and nut shell activated carbon effect is rather poor, whose removal rate of COD and phthalic acid are around 20%. Also, activated carbon adsorption is not selective, cannot recycle phthalic acid and does not produce the corresponding economic benefit. While using the NDA - 66 resin adsorption processing plasticizer DIBP production wastewater, the pollutants reduce 4 ~ 5 times that of activated carbon adsorption. Also, recycling the O-phthalic acid can produce the economic benefits of 1. 108 million yuan annually. At the same time, it is easy for stripping of resin to regenerate, which can be used and reused for 2 years. Thus it has greater value of popularization and application.