复合树脂对磷酸盐的动态吸附研究
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摘要
研究HFO-N和HFO-B两种复合树脂对磷酸盐的动态吸附特性,考察两种树脂的固定床穿透曲线、吸附-解吸性能以及解吸后的再吸附行为。结果表明,HFO-N复合树脂穿透时间比HFO-B复合树脂长,穿透时间为1 610 h;其处理体积数远高于HFO-B复合树脂,穿透体积数高达8 050 BV;其对磷酸盐的穿透吸附量为401.48 mg。HFO-B复合树脂中吸附的磷酸盐在两次解吸中均得到了良好的解吸效果,而HFO-N复合树脂解吸耗时较长且解吸率较低。HFO-B复合树脂的解吸过程没有影响后续其对磷酸盐的吸附性能。
The dynamic adsorption characteristics of phosphates on HFO-N and HFO-B composite resins were examined. The fixed bed breakthrough curves, adsorption-desorption performance and the resorbed behavior of the two resins were investigated. The results showed that the penetration time of HFO-N composite resin was longer than that of HFO-B composite resin,and the penetration time was 1 610 h; The treatment volume of HFO-N composite resin was also much higher than that of HFO-B composite resin, and the penetration volume was as high as 8 050 BV; The absorbed amount was 401.48 mg. The phosphate adsorbed in the HFO-B composite resin had a good desorption effect in both desorption process. The desorption of HFO-N composite resin took a long time and the desorption rate was lower. The desorption process of HFO-B composite resin did not affect its subsequent adsorption of phosphate.
The dynamic adsorption characteristics of phosphates on HFO-N and HFO-B composite resins were examined. The fixed bed breakthrough curves, adsorption-desorption performance and the resorbed behavior of the two resins were investigated. The results showed that the penetration time of HFO-N composite resin was longer than that of HFO-B composite resin,and the penetration time was 1 610 h; The treatment volume of HFO-N composite resin was also much higher than that of HFO-B composite resin, and the penetration volume was as high as 8 050 BV; The absorbed amount was 401.48 mg. The phosphate adsorbed in the HFO-B composite resin had a good desorption effect in both desorption process. The desorption of HFO-N composite resin took a long time and the desorption rate was lower. The desorption process of HFO-B composite resin did not affect its subsequent adsorption of phosphate.
引文
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[2]陈良,张炜铭,吕路,等.臭氧氧化-化学沉淀法深度处理电镀含磷废水的研究[J].工业水处理,2015,35(7):31-34.
[3]刘文辉,刘恩同,张治宏,等.酸改性粉煤灰对含磷污水处理的实验研究[J].环境科学与技术,2011,34(8):164-168.
[4]曹春艳,赵莹莹.羟基铁柱撑膨润土处理含磷废水的研究[J].环境科学与技术,2013,36(4):164-167.
[5]张鑫,白玲玲,黄佳佳,等.CaO絮凝沉淀—树脂吸附两步法处理制药废水[J].化工进展,2011,30(3):671-680.
[6]姜国玉,李羚,张莉,等.树脂吸附法处理2-萘酚母液废水的研究[J].工业用水与废水,2010,41(4):34-38.
[7] PAN B J,WU J,PAN B C,et al. Development of polymerbased nanosized hydrated ferric oxides(HFOs)for enhanced phosphate removal from waste effluents[J].Water Res,2009,43(17):4421-4429.
[8]项学敏,刘颖,周集体,等.水合氧化铁对废水中磷酸根的吸附—解吸性能研究[J].环境科学,2008,29(11):3059-3063.
[9]张晓,程婷,陈晨,等.HFO复合树脂对磷酸盐的吸附等温线与动力学研究[J].绿色科技,2017(2):106-108,114.
[10]张晓,程婷,陈晨,等.复合树脂吸附剂对磷酸盐的吸附性能研究[J].广州化工,2017,45(2):59-61.