| abstract |
Provided is a reverse osmosis membrane cleaning apparatus ( 10 ) which includes a membrane module ( 1 ) including a reverse osmosis membrane, a cleaning water tank ( 11 ) which stores cleaning water, a heater ( 13 ) which heats cleaning water supplied from the cleaning water tank ( 11 ) to the reverse osmosis membrane, and a temperature control device ( 17 ) which controls the heater so that a temperature of the cleaning water heated by the heater ( 13 ) is higher than 45° C. and not higher than 60° C. |