| 摘要 |
The purpose of the present invention is to make it possible to reduce the energy consumed for waste water treatment. By bringing SO2 contained in exhaust gas (g1) into contact with cleaning seawater (a1) in a scrubber (10), the exhaust gas is purified and made into purified gas (g2) and the cleaning seawater with absorbed SO2 is discharged as waste water (a2). At that time, the exhaust gas flow and SO2 concentration and purified gas SO2 concentration are measured. From said measured values, the amount absorbed in the cleaning seawater as HSO3 - is calculated and diluting seawater (a3) in an amount corresponding to said calculation results is supplied to the discharged waste water. |
