1.雙級反滲透：

      原水（自來水、地(di)表(biao)水、地(di)下水）加(jia)壓(ya)送(song)(song)至(zhi)預(yu)處理系(xi)(xi)統(tong)(tong)粗過(guo)(guo)(guo)濾，再(zai)進入精密(mi)過(guo)(guo)(guo)濾器過(guo)(guo)(guo)濾后，通過(guo)(guo)(guo)一級(ji)高壓(ya)泵(beng)加(jia)壓(ya)送(song)(song)至(zhi)一級(ji)反滲(shen)透系(xi)(xi)統(tong)(tong)，該系(xi)(xi)統(tong)(tong)產出的水再(zai)由二(er)級(ji)高壓(ya)泵(beng)加(jia)壓(ya)送(song)(song)至(zhi)二(er)級(ji)反滲(shen)透系(xi)(xi)統(tong)(tong)，生產出產品(pin)水，稱為雙級(ji)反滲(shen)透。

2.工藝流程圖：

      雙級反滲透，適合電導率大于500μs/cm的水(shui)質(zhi)，出水(shui)電導率1-10μs/cm。