Abstract: System and method for treating scrubber and ballast wastewater at the same time. The method includes mixing ballast and scrubber wastewater to make a suspended solid concentration or turbidity of the obtained wastewater mixture constant, the scrubber wastewater produced by bringing exhaust gas and scrubber washing water into contact with each other in a scrubber; adding magnetic powder to the wastewater mixture; and magnetically separating magnetic flocs obtained in the adding. The system includes a mixer that mixes ballast and scrubber wastewater to make a suspended solid concentration or turbidity of the obtained wastewater mixture constant, the scrubber wastewater produced by bringing exhaust gas and scrubber washing water into contact with each other in a scrubber; a magnetic powder adding device that adds magnetic powder to the wastewater mixture obtained by the mixer; and a magnetic separator that magnetically separates magnetic flocs obtained by the magnetic powder adding device.

Abstract: Provided is an exhaust gas purifying apparatus capable of purifying exhaust gas by using water. The exhaust gas purifying apparatus includes an electrolyzed alkaline water generator which includes a cathode and an anode formed of Mg or an Mg alloy, and in which water is electrolyzed through application of voltage across the cathode and anode, to generate electrolyzed alkaline water. The purifying apparatus includes an exhaust gas absorption tower into which exhaust gas is introduced. Spray nozzles spray the electrolyzed alkaline water in the exhaust gas absorption tower.

Abstract: System and method for treating scrubber and ballast wastewater at the same time. The method includes mixing ballast and scrubber wastewater to make a suspended solid concentration or turbidity of the obtained wastewater mixture constant, the scrubber wastewater produced by bringing exhaust gas and scrubber washing water into contact with each other in a scrubber; adding magnetic powder to the wastewater mixture; and magnetically separating magnetic flocs obtained in the adding. The system includes a mixer that mixes ballast and scrubber wastewater to make a suspended solid concentration or turbidity of the obtained wastewater mixture constant, the scrubber wastewater produced by bringing exhaust gas and scrubber washing water into contact with each other in a scrubber; a magnetic powder adding device that adds magnetic powder to the wastewater mixture obtained by the mixer; and a magnetic separator that magnetically separates magnetic flocs obtained by the magnetic powder adding device.

Abstract: Provided is an exhaust gas purifying apparatus capable of purifying exhaust gas by using water. The exhaust gas purifying apparatus includes an electrolyzed alkaline water generator which includes a cathode and an anode formed of Mg or an Mg alloy, and in which water is electrolyzed through application of voltage across the cathode and anode, to generate electrolyzed alkaline water. The purifying apparatus includes an exhaust gas absorption tower into which exhaust gas is introduced. Spray nozzles spray the electrolyzed alkaline water in the exhaust gas absorption tower.