CAJ | 학술논문

为获取纳滤膜法处理阿斯巴甜高含盐有机废水的最佳操作工艺参数，建立了阿斯巴甜高含盐有机废水纳滤膜处理试验平台。对不同操作压力（1.6、2.0、2.4、2.8、3.2 MPa）、不同pH值（2、3、6、8、10）、不同温度（30、35、40、45、50℃）和不同进液流速（0.02、0.05、0.10、0.15、0.20 m/s）条件下，纳滤膜处理阿斯巴甜高含盐废水的膜通量、体积浓缩比、氯化钠去除率、氨基酸截留率和氨基酸回收率特性进行了试验研究。研究表明：采用纳滤膜处理阿斯巴甜高含盐有机废水，操作压力，温度、pH值和进液流速对纳滤膜的分离性能有不同程度的影响，试验得出的最佳操作压力为2.4 MPa，pH值为6，进液温度为40℃，进液流速为0.1 m/s，在该操作参数下，纳滤膜运行3 h，平均膜通量为21.5 L/（m2·h），体积浓缩比为5.9，氯化钠去除率为96%，有机物L-苯丙氨酸和L-天冬氨酸截留率分别为89%和77%，L-苯丙氨酸和L-天冬氨酸回收率分别为90.6%和80.3%。试验研究为高含盐有机废水处理的工业应用提供了基础。
위획취납려막법처리아사파첨고함염유궤폐수적최가조작공예삼수，건립료아사파첨고함염유궤폐수납려막처리시험평태。대불동조작압력（1.6、2.0、2.4、2.8、3.2 MPa）、불동pH치（2、3、6、8、10）、불동온도（30、35、40、45、50℃）화불동진액류속（0.02、0.05、0.10、0.15、0.20 m/s）조건하，납려막처리아사파첨고함염폐수적막통량、체적농축비、록화납거제솔、안기산절류솔화안기산회수솔특성진행료시험연구。연구표명：채용납려막처리아사파첨고함염유궤폐수，조작압력，온도、pH치화진액류속대납려막적분리성능유불동정도적영향，시험득출적최가조작압력위2.4 MPa，pH치위6，진액온도위40℃，진액류속위0.1 m/s，재해조작삼수하，납려막운행3 h，평균막통량위21.5 L/（m2·h），체적농축비위5.9，록화납거제솔위96%，유궤물L-분병안산화L-천동안산절류솔분별위89%화77%，L-분병안산화L-천동안산회수솔분별위90.6%화80.3%。시험연구위고함염유궤폐수처리적공업응용제공료기출。
In order to obtain the appropriate operating parameters in treating aspartame hypersaline amino acids wastewater using nanofiltration membrane, the experimental device was built. Experimental investigation was carried out to explore the separation performance of average permeate flux, the volume concentration ratio,amino acid retention, sodium chloride removal rate and amino acid recovery rate under different experimental conditions. Experimental parameter conditions were as follows:when inlet pressure was 1.6, 2.0, 2.4, 2.8, 3.2 MPa, pH value was 6.8~7.5, temperature was 40℃and feed flow rate was 0.1m/s;when temperature was 30, 35, 40, 45, 50℃, inlet pressure was 2.4 MPa, pH value was 6.8~7.5 and feed flow rate was 0.1 m/s;when pH value was 2, 3, 6, 8, 10, inlet pressure was 2.4 MPa, temperature was 40℃and feed flow rate was 0.1m/s;when feed flow rate was 0.02, 0.05, 0.10, 0.15, 0.20 m/s, pressure was 2.4 MPa, temperature was 40℃, pH value was 6.8~7.5. The results show that the inlet pressure, temperature, pH and feed flow rate have different effects on nanofiltration membrane separation performance. When inlet pressure increases, the average permeate flux, volume concentration ratio, sodium chloride removal rate and amino acid retention increase, while amino acid recovery rate decreases slightly. When temperature increases, average permeate flux, volume concentration ratio and sodium chloride removal rate increase, while amino acid retention and amino acid recovery rate decrease. When pH value increases, average permeate flux, volume concentration ratio and sodium chloride removal rate increase, and there is a peak in pH value of 6. Then with the increase of pH value, average permeate flux, volume concentration ratio and sodium chloride removal rate decrease, while amino acid retention and amino acid recovery rate increase. When feed flow rate increases, average permeate flux, volume concentration ratio,sodium chloride removal rate increase. But when feed flow rate is greater than 0.1 m/s, they tend to be stable. The feed flow rate has a little effect on amino acid retention and amino acid recovery rate. The appropriate operating parameters are the inlet pressure of 2.4 MPa, pH value of 6, the temperature of 40℃and the inlet flow rate of 0.1 m/s. Under the conditions, the system of nanofiltration membrane works for 3 hours, the average permeate flux is 21.5 L/(m2·h), the volume concentration ratio is 5.9, the sodium chloride removal rate is 96%,the retentions of L-phenylalanine and L-aspartic are 89%and 77%respectively,the recovery rates of L-phenylalanine and L-aspartic acid are 90.6%and 80.3%respectively.The experimental researches provide the reference for industrial application of nanofiltration membrane in treating aspartame hypersaline amino acids wastewater.