电渗析和反渗透耦合深度处理制革高盐废水的研究
发布时间：2018-12-21 08:46
【摘要】：针对制革行业"双膜法"废水回用工艺产生的高盐废水的特点,通过电驱离子膜和反渗透膜的耦合,对制革高盐废水进行了高效深度处理研究。结果表明,在电压25 V、进水体积流量30 L/h、脱盐室循环体积流量500 L/h操作条件下,经过电渗析分离,得到的浓缩盐水TDS的质量浓度在150 g/L以上,满足皮革浸渍工序段用料要求;得到的脱盐水TDS的质量浓度8.2 g/L、COD为330 mg/L。脱盐水在28℃、进水体积流量900 L/h、回收率50%条件下,经反渗透处理得到淡水TDS的质量浓度72 mg/L、不含COD,水质达到了GB/T 19923-2005的要求;产出浓水水质与原水水质相似,可返回电渗析工序。该工艺可有效提升系统的水回收利用率。
[Abstract]:According to the characteristics of high salt wastewater produced by "double membrane process" wastewater reuse in tannery industry, the high efficiency advanced treatment of high salt tannery wastewater was studied by coupling ion membrane with reverse osmosis membrane. The results show that under the conditions of voltage 25 V, influent volume flow 30 L / h, and desalination chamber circulation volume flow 500L / h, the concentration of TDS in concentrated brine is more than 150g / L after electrodialysis separation. Meet the requirements of leather impregnation process material; The mass concentration of desalted TDS is 8.2 g / L ~ (-1), which is 330 mg/L.. Under the conditions of desalination at 28 鈩，
本文编号：2388678
[Abstract]:According to the characteristics of high salt wastewater produced by "double membrane process" wastewater reuse in tannery industry, the high efficiency advanced treatment of high salt tannery wastewater was studied by coupling ion membrane with reverse osmosis membrane. The results show that under the conditions of voltage 25 V, influent volume flow 30 L / h, and desalination chamber circulation volume flow 500L / h, the concentration of TDS in concentrated brine is more than 150g / L after electrodialysis separation. Meet the requirements of leather impregnation process material; The mass concentration of desalted TDS is 8.2 g / L ~ (-1), which is 330 mg/L.. Under the conditions of desalination at 28 鈩，
本文编号：2388678
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