CAJ | 학술논문

研究了用纳滤法从铀矿山酸性废水中去除硫酸根，考察了原水pH、工作压力、回收率的选择对纳滤膜性能的影响，确定了膜清洗方法。试验结果表明：N E8040-90型纳滤膜对矿山酸性废水有良好的处理效果，在原水pH为8．3～9．7之间、工作压力为0．5～0．9MPa条件下，产水中硫酸根质量浓度小于250mg/L，去除率较高，且系统能耗小，运行费用低；用盐酸和氯化钠作清洗剂，可将膜表面的结垢彻底洗涤。实际生产运行时，为提高纳滤膜出水水质，系统需增加伴热装置。
연구료용납려법종유광산산성폐수중거제류산근，고찰료원수pH、공작압력、회수솔적선택대납려막성능적영향，학정료막청세방법。시험결과표명：N E8040-90형납려막대광산산성폐수유량호적처리효과，재원수pH위8．3～9．7지간、공작압력위0．5～0．9MPa조건하，산수중류산근질량농도소우250mg/L，거제솔교고，차계통능모소，운행비용저；용염산화록화납작청세제，가장막표면적결구철저세조。실제생산운행시，위제고납려막출수수질，계통수증가반열장치。
Removing of SO2 -4 in uranium mine acidic wastewater using nanofiltration membrane was studied . The effects of raw water pH ,operating pressure ,recovery on the performance of nanofiltration membrane were examined ,and membrane cleaning method was proposed .The results show that NE8040-90 nanofiltration membrane can be used to treat mine acidic wastewater .The content of SO2 -4 in contributing water is less than 300 mg/L with high recovery rate ,low energy consumption and operating cost under the conditions of raw water pH of 8 .3-9 .7 and operating pressure of 0 .5 -0 .9 MPa .Fouling of the membrane surface can be cleaned using hydrochloric acid and sodium chloride solution .Meanwhile ,in order to improve effluent quality , heating device is suggested to set in industrial operation system .