Water treatment apparatus and method for treatment of water

A method for treatment of water, the method comprising:

• using a water treatment apparatus, which includes:
• a water transport line,
• a plasma generation device, which has:
• a feed gas inlet for a feed gas,
• a first electrode and a second electrode, the first electrode and the second electrode each being a cylinder electrode, the first electrode being disposed inside the second electrode,
• a cooling fluid passage having a cooling fluid inlet and a cooling fluid outlet, wherein at least one of the first electrode or the second electrode comprises the cooling fluid passage, and
• a combining section connected to the cooling fluid outlet:
• and
• a mixing device, which includes a Venturi mixer, transporting a water main stream through the water transport line;
• generating an activated gas from the feed gas with the plasma generation device, the first electrode and the second electrode of the plasma generation device being configured for activating the feed gas by an electric discharge between the first electrode and the second electrode thereby generating the activated gas;
• cooling the plasma generation device by feeding the cooling fluid passage with a cooling fluid;
• combining. via the combining section of the plasma generation device, the activated gas with the cooling fluid from the cooling fluid outlet to generate an activated fluid product;
• and
• mixing via the mixing device, the activated fluid product from the combining section and the water main stream from the water transport line.