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不同品牌反渗透膜产水量与温度的关系

分割线

实验室超纯水机或纯水、超纯水机工程设备制取纯水的主要工艺为反渗透。反渗透制取纯水有个特点是:反渗透膜的实际产水量受温度的影响变化较大。大多数实验室超纯水机或反渗透纯水设备产水量是按反渗透膜在25℃进水温度下的标准产水量来标注的。因此,客户在选择实验室超纯水机或反渗透纯水设备时,考虑到冬季水温较低,以及反渗透膜投入使用后水通量会逐渐降低的影响因素,务必放大需求产水量至设备标称产水量的1.5~2倍考虑。

温度对反渗透膜产水量的影响如下图所示。温度变低,水的粘度增加,水的扩散性减弱,产水量也随着温度下降而降低。在同一压力下,温度下降一摄氏度,产水量可减小3~4%。下列方程是产水通量随温度变化的关系。

TCF=exp[K×(1÷(273+t)-1÷298]

其中TCF是温度校正因子,K是膜材料常数,t是进水摄氏温度。该方程将25℃作为基准,TCF=1。

反渗透膜产水量与温度的关系

另外,一般反渗透膜生产厂家对自己品牌的反渗透膜元件都有一个膜产品的温度校正系数,下面分别列举了美国陶氏的FILMTEC反渗透膜、美国海德能的ESPA反渗透膜、韩国世韩的CSM系列反渗透膜、日本东丽反渗透膜以及国产汇通源泉VONTRON反渗透膜的膜产品温度校正系数表。

陶氏的FILMTEC反渗透膜温度校正系数(TCF)

温度
温度校
正系数
TCF
温度
温度校
正系数
TCF
温度
温度校
正系数
TCF
温度
温度校
正系数
TCF
温度
温度校
正系数
TCF
101.711141.475181.276221.109260.971
10.11.70514.11.46918.11.27222.11.10526.10.968
10.21.69814.21.46418.21.26722.21.10126.20.965
10.31.69214.31.45918.31.26222.31.09726.30.962
10.41.68614.41.45318.41.25822.41.09326.40.959
10.51.67914.51.44818.51.25422.51.0926.50.957
10.61.67314.61.44318.61.24922.61.08626.60.954
10.71.66714.71.43718.71.24522.71.08226.70.951
10.81.6614.81.43218.81.2422.81.07826.80.948
10.91.65414.91.42718.91.23622.91.07526.90.945
111.648151.422191.232231.071270.943
11.11.64215.11.41719.11.22723.11.06727.10.94
11.21.63615.21.41119.21.22323.21.06427.20.937
11.31.6315.31.40619.31.21923.31.0627.30.934
11.41.62415.41.40119.41.21423.41.05627.40.932
11.51.61815.51.39619.51.2123.51.05327.50.929
11.61.61115.61.39119.61.20623.61.04927.60.926
11.71.60515.71.38619.71.20123.71.04527.70.924
11.81.615.81.38119.81.19723.81.04227.80.921
11.91.59415.91.37619.91.19323.91.03827.90.918
121.588161.371201.189241.035280.915
12.11.58216.11.36620.11.18524.11.03128.10.913
12.21.57616.21.36120.21.1824.21.02828.20.91
12.31.5716.31.35620.31.17624.31.02428.30.908
12.41.56416.41.35120.41.17224.41.02128.40.905
12.51.55816.51.34720.51.16824.51.01728.50.902
12.61.55316.61.34220.61.16424.61.01428.60.9
12.71.54716.71.33720.71.1624.71.0128.70.897
12.81.54116.81.33220.81.15624.81.00728.80.894
12.91.53616.91.32720.91.15224.91.00329.90.892
131.53171.323211.148251290.889
13.11.52417.11.31821.11.14425.10.99729.10.887
13.21.51917.21.31321.21.1425.20.99429.20.884
13.31.51317.31.30821.31.13625.30.99129.30.882
13.41.50817.41.30421.41.13225.40.98829.40.879
13.51.50217.51.29921.51.12825.50.98529.50.877
13.61.49617.61.29421.61.12425.60.98229.60.874
13.71.49117.71.2921.71.1225.70.97929.70.871
13.81.48617.81.28521.81.11625.80.97729.80.869
13.91.4817.91.28121.91.11225.90.97429.90.866

校正后流量=实测流量×对应于进水温度的温度校正系数(TCF值)。

美国海德能ESPA超低压反渗透膜元件产水量的温度系数

温度℃00.10.20.30.40.50.60.70.80.9
51.9191.9121.9061.8991.8921.8861.8791.8731.8661.86
61.8531.8471.8411.8341.8281.8221.8151.8091.8031.797
71.791.7841.7781.7721.7661.761.7541.7481.7421.736
81.731.7241.7181.7121.7071.7011.6951.6891.6831.678
91.6721.6661.6611.6551.651.6441.6381.6331.0271.622
101.6161.6111.6061.61.5951.5891.5841.5791.5471.566
111.5631.5581.5531.5471.5421.5371.5321.5271.5221.517
121.5121.5071.5021.4971.4921.4871.4821.4771.4721.467
131.4361.4581.4531.4481.4431.4391.4341.4291.4251.42
141.4151.4111.4061.4011.3971.3921.3881.3831.3791.374
151.371.3651.3611.3561.3521.3481.3431.3391.3351.33
161.3261.3221.3171.3131.3091.3051.3011.2961.2921.288
171.2841.281.2761.2721.2661.2641.261.2551.2511.247
181.2441.241.2361.2321.2281.2241.221.2161.2121.208
191.2051.2011.1971.1931.1891.1861.1821.1781.1751.171
201.1671.1641.161.1561.1531.1491.1451.1421.1381.135
211.1311.1281.1241.1211.1171.1141.111.1071.1031.1
221.0971.0931.091.0861.0831.081.0761.0731.071.066
231.0631.061.0571.0531.051.0471.0441.041.0371.034
241.0311.0281.0251.02221.0181.0151.0121.0091.0061.003
2510.9970.9940.9910.9880.9850.9820.9790.9760.973
260.970.9670.9640.9610.9590.9560.9530.950.9470.944
270.9410.9390.9360.9330.930.9270.9250.9220.9190.916
280.9140.9110.9080.9060.9030.90.8970.8950.8920.89
290.8870.8840.8820.8790.8760.8740.8710.8690.8660.864
300.8610.8570.8560.8540.8510.8490.84860.8440.8410.839
310.8360.8340.8310.8290.8270.8240.8220.8190.8170.815
320.8120.810.8080.8050.8030.8010.7980.7960.7940.791
330.7890.7870.7850.7820.780.7780.7760.7730.7710.769
340.7670.7650.7620.760.7580.7560.7540.7520.7490.747
350.7450.7430.7410.7390.7370.7350.7330.730.7280.726
360.7240.7220.720.7180.7160.7140.7120.710.7080.706
370.7040.7020.70.6980.6960.6940.6920.690.6890.687
380.6850.6830.6810.6790.6770.6750.6730.6720.670.668
390.6660.6640.6620.660.6590.6590.6550.6530.6510.65
0.6480.6460.6440.6420.6410.6390.6370.6350.6340.632

韩国世韩CSM系列BE、BN、TN、TE级反渗透膜的温度修正系数

Temp℃0.00.10.20.30.40.50.60.70.80.9
52.0932.0852.0772.0692.0602.0522.0442.0362.0282.020
62.0122.0041.9971.9891.9811.9731.9661.9581.9501.943
71.9351.9271.9201.9131.9051.8981.8901.8831.8761.868
81.8611.8541.8471.8401.8331.8261.8191.8121.8051.798
91.7911.7841.7771.7701.7631.7571.7501.7431.7371.730
101.7231.7171.7101.7041.6971.6911.6841.6781.6721.665
111.6591.6531.6461.6401.6341.6281.6221.6161.6101.603
121.5971.5911.5851.5791.5741.5681.5621.5561.5501.544
131.5391.5331.5271.5211.5161.5101.5041.4991.4931.488
141.4821.4771.4711.4661.4601.4551.4501.4441.4391.434
151.4281.4231.4181.4131.4071.4021.3971.3921.3871.382
161.3771.3721.3671.3621.3571.3521.3471.3421.3371.332
171.3271.3231.3181.3131.3081.3041.2991.2941.2891.285
181.2801.2761.2711.2661.2621.2571.2531.2481.2441.239
191.2351.2301.2261.2221.2171.2131.2091.2041.2001.196
201.1921.1871.1831.1791.1751.1711.1661.1621.1581.154
211.1501.1461.1421.1381.1341.1301.1261.1221.1181.114
221.1101.1061.1021.0981.0951.0911.0871.0831.0791.076
231.0721.0681.0641.0611.0571.0531.0501.0461.0421.039
241.0351.0321.0281.0241.0211.0171.0141.0101.0071.003
251.0000.9970.9930.9900.9860.9830.9800.9760.9730.970
260.9710.9680.9650.9620.9590.9560.9530.9510.9480.945
270.9420.9390.9370.9340.9310.9280.9260.9230.9200.918
280.9150.9120.9100.9070.9040.9020.8990.8960.8940.891
290.8880.8860.8830.8810.8780.8760.8730.8710.8680.866
300.8630.8610.8580.8560.8530.8510.8480.8460.8430.841
310.8380.8360.8340.8310.8290.8270.8240.8220.8190.817
320.8150.8120.8100.8080.8060.8030.8010.7990.7960.794
330.7920.7900.7870.7850.7830.7810.7790.7760.7740.772
340.7700.7680.7650.7630.7610.7590.7570.7550.7530.751
350.7480.7460.7440.7420.7400.7380.7360.7340.7320.730
360.7280.7260.7240.7220.7200.7180.7160.7140.7120.710
370.7080.7060.7040.7020.7000.6980.6960.6940.6920.690
380.6890.6870.6850.6830.6810.6790.6770.6750.6740.672
390.6700.6680.6660.6640.6630.6610.6590.6570.6560.654
400.6520.6500.6480.6470.6450.6430.6410.6400.6380.636

东丽反渗透膜、汇通源泉 VONTRON 反渗透膜的温度校正系数

Temp℃0.00.10.20.30.40.50.60.70.80.9
52.1602.1512.1422.1342.1252.1172.1082.1002.0912.083
62.0752.0662.0582.0502.0422.0342.0252.0172.0092.001
71.9931.9861.9781.9701.9621.9541.9461.9391.9311.923
81.9161.9081.9011.8931.8861.8781.8711.8631.8561.849
91.8411.8341.8271.8201.8131.8051.7981.7911.7841.777
101.7701.7631.7561.7501.7431.7361.7291.7221.7161.709
111.7021.6961.6891.6821.6761.6691.6631.6561.6501.643
121.6371.6311.6241.6181.6121.6051.5991.5931.5871.581
131.5751.5681.5621.5561.5501.5441.5381.5321.5271.521
141.5151.5091.5031.4971.4921.4861.4801.4741.4691.463
151.4571.4521.4461.4411.4351.4301.4241.4191.4131.408
161.4031.3971.3921.3871.3811.3761.3711.3661.3601.355
171.3501.3451.3401.3351.3301.3251.3201.3151.3101.305
181.3001.2951.2901.2851.2801.2751.2701.2661.2611.256
191.2511.2471.2421.2371.2321.2281.2231.2191.2141.209
201.2051.2001.1961.1911.1871.1821.1781.1741.1691.165
211.1601.1561.1521.1471.1431.1391.1351.1301.1261.122
221.1181.1141.1101.1051.1011.0971.0931.0891.0851.081
231.0771.0731.0691.0651.0611.0571.0531.0491.0451.042
241.0381.0341.0301.0261.0221.0191.0151.0111.0071.004
251.0000.9970.9950.9920.9890.9870.9840.9820.9790.976
260.9740.9710.9690.9660.9630.9610.9580.9560.9530.951
270.9480.9460.9430.9410.9380.9360.9330.9310.9280.926
280.9240.9210.9190.9160.9140.9120.9090.9070.9040.902
290.9000.8970.8950.8930.8900.8880.8860.8830.8810.879
300.8770.8740.8720.8700.8680.8650.8630.8610.8590.856
310.8540.8520.8500.8480.8450.8430.8410.8390.8370.835
320.8320.8300.8280.8260.8240.8220.8200.8180.8160.813
330.8110.8090.8070.8050.8030.8010.7990.7970.7950.793
340.7910.7890.7870.7850.7830.7810.7790.7770.7750.773
350.7710.7690.7670.7650.7630.7610.7600.7580.7560.754
360.7520.7500.7480.7460.7440.7430.7410.7390.7370.735
370.7330.7310.7300.7280.7260.7240.7220.7210.7190.717
380.7150.7130.7120.7100.7080.7060.7050.7030.7010.699
390.6980.6960.6940.6930.6910.6890.6870.6860.6840.682
400.6810.6790.6770.6760.6740.6720.6710.6690.6670.666

校正后流量=实测流量×给水温度对应的校正系数(上述表中的数据)

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