DILUTED SOLUTION PREPARING AND TRANSPORTING METHOD

摘要

PURPOSE:To enable smooth tranport and to make it possible to clean the interior of a transport pipe by a diluted solution, by transporting a stock solution by the diluting solution so as to obtain a desired mixing ratio. CONSTITUTION:In such a state that a stock solution and the diluting solution thereof can be selectively supplied to the supply port 2 of a transport pipe 1 and a discharge port 3 is enabled to be communicated with a stock solution/diluting solution mixing treatment part 7 while the diluting solution is flowed to a drain pipe 6 from a supply pipe 4 through the pipe 1, the supply of the diluting solution is stopped while, at the same time, the stock solution begins to supply from a stock solution storing tank 5 and the discharge port 3 is allowed to communicate with the treatment part 7. At the point of time when the supply amount of the stock solution reaches a predetermined one, the supply of the stock solution is stopped and, at the same time, the diluting solution is supplied and, at the point of time when the sum of the flow amount in the pipe 1 from the supply start of the stock solution and the volume from the supply port 2 of the pipe 1 to the discharge port 3 thereof becomes equal to the total amount of the diluted solution consisting of the stock solution and the diluting solution in the treatment part 7, the flow to the treatment part 7 is stopped.