电渗析组合反渗透过程处理头孢氨苄酶法母液废水的研究

摘要

利用电渗析技术脱除头孢氨苄酶法母液废水中的盐分，研究了操作电压、浓缩室与淡化室流速比、温度等因素对电渗析脱盐过程的影响，并研究了反渗透膜法处理脱盐母液废水的膜通量变化趋势。实验结果表明，当淡化室、浓缩室流量均为500 L/h（流速比1∶1），操作电压为25 V，温度＜30℃时，电渗析在高效脱盐的同时具有理想的有机物截留率达99.50%以上，能耗3.65 kW⋅h/kg；反渗透膜法在处理脱盐母液废水时，膜通量衰减较慢，水回收率达到75.67%。实验结果表明，利用电渗析、反渗透组合工艺处理头孢氨苄酶法母液废水具有良好的可行性。%The-salt-in-the-waste-water-of-the-cephalexin-enzymatic-process-was-removed-by-electrodialysis.-The-influences-of-operating-voltage,velocity-ratio-and-temperature-on-the-desal-ination-process-were-investigated.-The-change-of-the-permeate-flux-in-the-reverse-osmosis-sepa-ration-process-was-also-studied.-The-results-showed-that-the-electrodialysis-process-performed-better-in-desalination-with-the-organic-matter-retention-rate-reaching-99.50%,the-energy-con-sumption-of-3.65-kW⋅h/kg-at-the-conditions-of-the-flow-of-500-L/h-(velocity-ratio-of-1∶1),the-operating-voltage-of-25-V-and-temperature<30℃.-During-the-reverse-osmosis-separation-pro-cess,the-decay-of-permeate-flux-was-slow-and-acceptable,and-the-water-recovery-rate-was-75.67%.-All-results-showed-that-it-was-feasible-to-treatment-the-waste-water-of-the-cephalexin-enzymatic-process-by-a-combined-process-of-electrodialysis-and-reverse-osmosis.