TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The green-energy water manufacturing device further comprises an ion emulsification device, which is connected to the ion separation device and comprises an ultrasonic wave emission source for emulsifying the ions. The self-support visible-light photocatalytic reaction device comprises visible-light photocatalyst board, heater, light source and a grounding line. The ion separation device comprises: inlet end; outlet end; electric field, which is supplied with a direct current and comprises a positive electrode board, and a negative electrode board opposite to the positive electrode board; a magnetic field, which is set parallel to the electric field and comprises north magnetic pole and south magnetic pole; ion separation plate, which is set between the positive and negative electrode boards; and two conveyance tubes, which are connected to the outlet end of the ion separation device and are respectively located at opposite sides of the ion separation plate for conveyance of the hydrogen ions and the hydroxide ions, respectively. In the green-energy water manufacturing device, the hydroxide ions that are separated by the ion separation device are conducted through a Venturi tube that is connected to the ion separation device into the ion emulsification device, where: the ultrasonic wave emission source of the ion emulsification device emits ultrasonic waves to the hydroxide ions to cause emulsification and fast dissolution of the hydroxide ions into water, to form high concentration alkaline green-energy water; and the water conducted into the Venturi tube is cooled by a water cooling device to control the temperature of the water within freezing point and room temperature. The visible-light photocatalyst board comprises a metal mesh. The heater is a heating device including electrical resistance heater, infrared heater or thermal electron heater.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: The hydrogen ions and the hydroxide ions, after being separated by the ion separation device, are subjected to processing comprising: employing a water cooling device to reduce temperature of water flowing through an ion emulsification device; conducting the separated hydrogen ions into the water of the ion emulsification device to form high concentration acidulous green-energy water; and conducting the separated hydroxide ions into the water of the ion emulsification device to form high concentration alkaline green-energy water. The hydroxide ions are dissolved in an aqueous solution containing base radicals and the hydrogen ions are dissolved in an aqueous solution containing acid radicals, to form high concentration green-energy water. EXAMPLE - No suitable example given.