相同面積和厚度的產(chǎn)水量與淨(jìng)驅(qū)動壓力成正比鹽透過量只與膜兩側(cè)

膜性能表示法Qw=Kw(ΔP+Δπ)A/T式中：Qw—產(chǎn)水量Kw—系數(shù)ΔP—膜兩側(cè)的壓差Δπ—滲透壓A—膜面積T—膜厚度

Kw與膜性質(zhì)及水溫有關(guān)，Kw越大，說明膜的透水性能越好。對于一張給定的膜，我們可以推導(dǎo)出產(chǎn)水量及鹽透過量的計算公式：Qs=Ks*ΔC*A/T式中：Qs—鹽透過量

Ks—系數(shù)Δc—膜兩側(cè)鹽濃度差A(yù)—膜面積T—膜厚度

Ks與膜性質(zhì)、鹽的種類及水溫有關(guān)，Ks越大，說明膜的脫鹽性能越好。從以上兩式可以看出，對膜來說Kw大Ks小那么膜質(zhì)量較好。相同面積和厚度的產(chǎn)水量與凈驅(qū)動壓力成正比，鹽透過量只與膜兩側(cè)溶液濃度成正比，而與壓力無關(guān)。集水管膜濃水膜透過水原水流道網(wǎng)原水透過水流道網(wǎng)原水膜元件的結(jié)構(gòu)示意圖反滲透卷制圖反滲透膜袋濃水網(wǎng)淡水網(wǎng)反滲透膜剝面圖膜元件端板給水產(chǎn)水流向(透過膜后)淡水網(wǎng)反滲透膜產(chǎn)水膜封口濃水網(wǎng)產(chǎn)水濃水產(chǎn)水中心管反滲透膜元件的進(jìn)水條件最高使用溫度：113F〔45℃〕最大給水濁度：4.0ppm允許游離氯：<0.1ppmPH范圍：連續(xù)運(yùn)行：3-10短時運(yùn)行：2-11最大給水流量：75GPM〔17.0m3/h〕給水最大SDI值：4.0單個膜元件回收率：15%*氯的耐受力計算建立在無鐵存在的根底上。針對特定污染物的反滲透預(yù)處理設(shè)計

——針對微粒和膠體的反滲透預(yù)處理設(shè)計澄清石灰軟化砂濾或添加混凝劑或絮凝劑后進(jìn)行多介質(zhì)過濾微濾或超濾加侖膜系統(tǒng)運(yùn)行數(shù)據(jù)的標(biāo)準(zhǔn)化

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標(biāo)準(zhǔn)化實例標(biāo)準(zhǔn)化實例——標(biāo)準(zhǔn)化的脫鹽率反滲透系統(tǒng)運(yùn)行數(shù)據(jù)的標(biāo)準(zhǔn)化

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標(biāo)準(zhǔn)化實例標(biāo)準(zhǔn)化實例——標(biāo)準(zhǔn)化的產(chǎn)水量標(biāo)準(zhǔn)化實測值豪升/分鐘反滲透膜元件的清洗條件為了維持正常的產(chǎn)品水流量，經(jīng)溫度校正后的給水使用壓力增加了10~15%當(dāng)標(biāo)準(zhǔn)化后的產(chǎn)水流量比上次清洗后減少10~15%當(dāng)標(biāo)準(zhǔn)化后的產(chǎn)水水質(zhì)比上次清洗后降低10~15%當(dāng)標(biāo)準(zhǔn)化后的壓降比上次清洗后增加10~15%RO各段間的壓差增加明顯在長期停用前作為日常的維護(hù)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溫度膜產(chǎn)水量的溫度系數(shù)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