| 摘要 |
PURPOSE:To reduce the frequency of the regenerating treatment of ion exchange resins by automatically analyze the quality of raw water to calculate the analyzed values of the raw water and the quantity of ion-exchanged water and subjecting the ion exchange resins to regenerating treatment at the point of time when the predetermined set value of the ion load is attained. CONSTITUTION:Raw water sent from raw water piping 8 passes through an anion exchange resin column 2, a decarboxylation column 9 and a cation exchange resin column 3 succeedingly treat it, causing pure water to be produced. In the production of pure water, water quality analyzing conduits 10 each branch off and are connected to the raw water feeding pipe and the piping on downstream side of the cation exchange resin column 3 to transmit their analyzed values to an arithmetic device 12. And the ion load to be given to each of the ion exchange resin columns 2, 3 is calculated and a regeneration signal is outputted at the point of time when the measured ion load coincides with the predetermined ion load. Consequently a HCI dilution tank 6 and a NaOH dilution tank 7 are started to give each of the ion exchange resin columns 2, 3 ion reprocessing through a regenerating treatment controller 13. |
