Hydrogen and catalysts for degassing and desalinization of water

Heating, steam generating, cooling, drying, aerating and air-conditioning plants and devices; waste-water purification plants, preparation plants for drinking water, industrial water and waste water, apparatus for the decomposition and purification of air and gases, reactors for gas-gas and gas-solid reactions, vaporizers for liquid gases, washing columns for purification of gases, devices and jets for introduction of gases into drinking, plant and waste water and into rivers, lakes and fish-farm waters, surface aerators for bodies of waters, filters for the above-mentioned devices, apparatus and plants