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改性活性炭对硫氰酸钠膜分离浓水脱杂过程的影响因素

刘建波 张盼月 曾光明 宋永会 田智勇

刘建波, 张盼月, 曾光明, 宋永会, 田智勇. 改性活性炭对硫氰酸钠膜分离浓水脱杂过程的影响因素[J]. 环境科学研究, 2016, 29(6): 863-869.
引用本文: 刘建波, 张盼月, 曾光明, 宋永会, 田智勇. 改性活性炭对硫氰酸钠膜分离浓水脱杂过程的影响因素[J]. 环境科学研究, 2016, 29(6): 863-869.
LIU Jianbo, ZHANG Panyue, ZENG Guangming, SONG Yonghui, TIAN Zhiyong. Influence Factors Analysis on the Treatment of NaSCN Concentrated Effluent by Modified Activated Carbon[J]. Research of Environmental Sciences, 2016, 29(6): 863-869.
Citation: LIU Jianbo, ZHANG Panyue, ZENG Guangming, SONG Yonghui, TIAN Zhiyong. Influence Factors Analysis on the Treatment of NaSCN Concentrated Effluent by Modified Activated Carbon[J]. Research of Environmental Sciences, 2016, 29(6): 863-869.

改性活性炭对硫氰酸钠膜分离浓水脱杂过程的影响因素

基金项目: 国家水体污染控制与治理科技重大专项(2012ZX07202-005,2013ZX07202-010)

Influence Factors Analysis on the Treatment of NaSCN Concentrated Effluent by Modified Activated Carbon

  • 摘要: 为解决东北某湿法腈纶生产厂中回收NaSCN(硫氰酸钠)效果欠佳的现状,采用不同改性方法制备了10%-H-GAC(氧化改性活性炭)、1M-Na-GAC(还原改性活性炭)和600-N2-GAC(高温改性活性炭),并探讨了改性方法、吸附时间、投加量以及初始pH对NaSCN膜分离浓水脱杂过程的影响. 结果表明:10%-H-GAC较其他改性活性炭对浓水中NH3-N、CODCr、TOC和盐度的去除率要好. 以10%-H-GAC为吸附剂,吸附时间为180 min,投加量为12.0 g/L,初始pH为6.0时,NH3-N、CODCr、TOC和盐度去除率分别可达35.1%、32.3%、34.9%、25.4%,表明该处理技术能很好地去除硫氰酸钠膜分离浓水中的污染物. 采用Fruendlich吸附等温模型对10%-H-GAC的吸附行为进行拟合,得到的NH3-N、CODCr、TOC及盐度拟合方程的相关系数均在0.92以上. 准二级动力学方程能更好地描述废水中杂质在活性炭上的吸附行为,反映吸附过程. 研究显示,10%-H-GAC能有效去除硫氰酸钠膜分离浓水中的杂质,达到回收硫氰酸钠的目的.

     

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  • 收稿日期:  2015-11-17
  • 修回日期:  2016-03-25
  • 刊出日期:  2016-06-25

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