相同面積和厚度的產水量與淨驅動壓力成正比鹽透過量只與膜兩側

膜性能表示法Qw=Kw(ΔP+Δπ)A/T式中：Qw—产水量Kw—系数ΔP—膜两侧的压差Δπ—渗透压A—膜面积T—膜厚度

Kw与膜性质及水温有关，Kw越大，说明膜的透水性能越好。对于一张给定的膜，我们可以推导出产水量及盐透过量的计算公式：Qs=Ks*ΔC*A/T式中：Qs—盐透过量

Ks—系数Δc—膜两侧盐浓度差A—膜面积T—膜厚度

Ks与膜性质、盐的种类及水温有关，Ks越大，说明膜的脱盐性能越好。从以上两式可以看出，对膜来说Kw大Ks小那么膜质量较好。相同面积和厚度的产水量与净驱动压力成正比，盐透过量只与膜两侧溶液浓度成正比，而与压力无关。集水管膜浓水膜透过水原水流道网原水透过水流道网原水膜元件的结构示意图反渗透卷制图反渗透膜袋浓水网淡水网反渗透膜剥面图膜元件端板给水产水流向(透过膜后)淡水网反渗透膜产水膜封口浓水网产水浓水产水中心管反渗透膜元件的进水条件最高使用温度：113F〔45℃〕最大给水浊度：4.0ppm允许游离氯：<0.1ppmPH范围：连续运行：3-10短时运行：2-11最大给水流量：75GPM〔17.0m3/h〕给水最大SDI值：4.0单个膜元件回收率：15%*氯的耐受力计算建立在无铁存在的根底上。针对特定污染物的反渗透预处理设计

——针对微粒和胶体的反渗透预处理设计澄清石灰软化砂滤或添加混凝剂或絮凝剂后进行多介质过滤微滤或超滤加仑膜系统运行数据的标准化

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标准化实例标准化实例——标准化的脱盐率反渗透系统运行数据的标准化

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标准化实例标准化实例——标准化的产水量标准化实测值豪升/分钟反渗透膜元件的清洗条件为了维持正常的产品水流量，经温度校正后的给水使用压力增加了10~15%当标准化后的产水流量比上次清洗后减少10~15%当标准化后的产水水质比上次清洗后降低10~15%当标准化后的压降比上次清洗后增加10~15%RO各段间的压差增加明显在长期停用前作为日常的维护1.0661.0701.0731.0761.0801.0831.0861.0901.0931.097221.1001.1031.1071.1101.1141.1171.1211.1241.1281.131211.1351.1381.1421.1451.1491.1531.1561.1601.1641.167201.1711.1751.1781.1821.1861.1891.1931.1971.2011.205191.2081.2121.2161.2201.2241.2281.2321.2361.2401.244181.2471.2511.2551.2601.2641.2661.2721.2761.2801.284171.2881.2921.2961.3011.3051.3091.3131.3171.3221.326161.3301.3351.3391.3431.3481.3521.3561.3611.3651.370151.3741.3791.3831.3881.3921.3971.4011.4061.4111.415141.4201.4251.4291.4341.4391.4431.4481.4531.4581.436131.4671.4721.4771.4821.4871.4921.4971.5021.5071.512121.5171.5221.5271.5321.5371.5421.5471.5531.5581.536111.5661.5471.5791.5841.5891.5951.6001.6061.6111.616101.6221.6271.6331.6381.6441.6501.6551.6611.6661.67291.6781.6831.6891.6951.7011.7071.7121.7181.7241.73081.7361.7421.7481.7541.7601.7661.7721.7781.7841.79071.7971.8031.8091.8151.8221.8281.8431.8411.8471.85361.8601.8661.8731.8791.8861.8921.8991.9061.9121.91950.90.80.70.60.50.40.30.20.10.0温度膜产水量的温度系数0.6230.6430.6350.6370.6390.6410.6420.6440.6460.648400.6500.6510.6530.6550.6590.6590.6600.6620.6640.666390.6680.6700.6720.6730.6750.6770.6790.6810.6830.685380.6870.6890.69000.6920.6940.6960.6980.7000.7020.704370.7060.7080.7100.7120.7140.7160.7180.7200.7220.724360.7260.7280.7300.7330.7350.7370.7390.7410.7430.745350.7470.7490.7520.7540.7560.7580.7600.7620.7650.767340.7690.7710.7730.7760.7780.7800.7820.7850.7870.789330.7910.7940.7960.7980.8010.8030.8050.8080.8100.812320.8150.8170.8190.8220.8240.8270.8290.8310.8340.836310.8390.8410.8440.8460.8490.8510.8540.8560.8570.861300.8640.8660.8690.8710.8740.8760.8790.8820.8840.887290.8900.8920.8950.8970.9000.9030.9060.9080.9110.914280.9160.9190.9220.9250.9270.9300.9330.9360.9390.941270.9440.9470.9500.9530.9560.9590.9610.9640.9670.970260.9730.9760.9790.9820.9850.9890.9910.9940.9971.000251.0031.006