吸附法处理有机盐水的研究
Study on treatment of organic saline by adsorption method
姚翰林1
作者信息
摘要
研究了吸附法对有机盐水中1,1,2-三氯乙烷的脱除效果,结果表明,在多种吸附剂中,SHY-5077型树脂对1,1,2-三氯乙烷的吸附能力较强,且不会因粉化而污染水样,室温常压下该树脂对1,1,2-三氯乙烷的静态平衡吸附量达到50～85 mg/g树脂.动态吸附时,当有机盐水的初始TOC(总有机碳含量)=314.4 mg/L、吸附柱床层高度为15 cm时,有机盐水以1.5 BV/h的流速通过树脂床层,经过约5 h后盐水出料的TOC超过电解离子膜限制的5 mg/L;当降低树脂床层的高度或增加有机盐水的流量后,盐水出料的TOC将以更快的速度上升.降低有机盐水的初始TOC将明显延缓树脂达到吸附饱和的过程,当有机盐水的初始TOC=100 mg/L、床层高度为15 cm时,有机盐水以1.5 BV/h的流速通过树脂床层,经过约12 h后盐水出料的TOC=4.85 mg/L,仍未超过5 mg/L.
Abstract
The removal effect of 1,1,2-trichloroethane in organic saline by adsorption method was studied.The results showed that among various adsorbents,the SHY-5077-type resin had a strong adsorption capac-ity for 1,1,2-trichloroethane,and would not pollute the saline due to pulverization.At room temperature and atmospheric pressure,the equilibrium adsorption capacity of the resin for 1,1,2-trichloroethane reached 50～85 mg/g resin.During dynamic adsorption,when the initial TOC(total organic carbon)of or-ganic saline was 314.4 mg/L,the height of resin bed was 15 cm,and the organic saline passed through the resin bed at the flow rate of 1.5 BV/h,the TOC of the effluent exceeded the ionic membrane limit of 5 mg/L after 5 h.When the height of the resin bed was lowered or the flow rate of the organic saline was increased,the TOC of the effluent would rise at a faster rate.Reducing the initial TOC of organic saline will signifi-cantly delay the process of resin reaching adsorption saturation.When the initial TOC of organic saline was 100 mg/L,the height of resin bed was 15 cm,and the organic saline passed through the resin bed at the flow rate of 1.5 BV/h,after 12 h the TOC of the effluent reached 4.85 mg/L,which still did not exceed 5 mg/L.
关键词
吸附/树脂/1,1,2-三氯乙烷/盐水/总有机碳Key words
adsorption/resin/1,1,2-trichloroethane/saline/total organic carbon引用本文复制引用
出版年
2024
NETL
NSTL
万方数据