| 主权项 |
1. A reverse osmosis treatment device comprising:
a first pressure vessel for treating an untreated water by a primary treatment to produce a primarily treated water and a first permeated water; a second pressure vessel for treating the primarily treated water by a secondary treatment to produce a secondarily treated water and a second permeated water; a first cleaning solution tank for storing a first cleaning solution used for cleaning the first pressure vessel; and a second cleaning solution tank for storing a second cleaning solution used for cleaning the second pressure vessel; wherein each of the first pressure vessel and the second pressure vessel has therein a reverse osmosis membrane element having a reverse osmosis membrane or reverse osmosis membrane elements connected in series by a water collection tube for a permeated water to flow therethrough, the permeated water having passed through the reverse osmosis membrane elements, wherein the first pressure vessel has one end having an untreated water inlet pipe for introducing the untreated water, wherein the first pressure vessel has another end having a first concentrate outlet pipe for discharging the primarily treated water and having a first outlet pipe for discharging the first permeated water, and wherein the second pressure vessel has one end having an inlet pipe for the primarily treated water for introducing the primarily treated water, wherein the second pressure vessel has another end having a second concentrate outlet pipe for discharging the secondarily treated water and having a second outlet pipe for discharging the second permeated water, wherein the first cleaning solution tank is connected to the first concentrate outlet pipe of the first pressure vessel, and wherein the second cleaning solution tank is connected to the inlet pipe for the primarily treated water of the second pressure vessel. |
