以新疆某煤化工高效反渗透（HERO）高盐废水为研究对象,测试了碟管式纳滤（DTNF）膜在70%、80%、90%回收率下的分盐效果,并择优采用高级氧化进行了纯化处理。中试结果表明,DTNF膜对HERO高盐废水有很好的分盐效果;提质后的氯化钠结晶盐纯度≥98.5%,满足GB/T 5462—2015《工业盐》精制工业干盐一级标准;硫酸钠结晶盐纯度≥98%,满足GB/T 6009—2014《工业无水硫酸钠》Ⅱ类一等品标准。

The salt separation effect of DTNF nanofiltration membrane was tested at recovery rate of 70%,80% and 90%,and the high-level oxidation was selected to purify the coal chemical high salt wastewater from Xinjiang after HERO concentra-tion.The pilot test results showed that DTNF nanofiltration membrane had a good salt separation effect for HERO high con-centration salt wastewater;the purity of sodium chloride crystal salt after upgrading was ≥98.5%,which met the first grade standard of refined industrial dry salt in Industrial Salt（GB/T 5462—2015）;the purity of sodium sulfate crystal salt was ≥98%,which met the first grade standard in Class Ⅱ of Industrial Anhydrous Sodium Sulfate（GB/T 6009—2014）.