This study demonstrates the technology of the combined purification of mine water and mine methane through the utilization of gas hydrates; purified methane is to be subjected to plasma pyrolysis. Given the considerable variability in the flow rate and concentration of methane, the objective was to identify a viable methodology for the utilisation of mine gas wherein the volumetric quantity and component composition of the gas would not be restrictive parameters. The proposed approach involves the transformation of coal mine gas into a hydrated form. The combination of a coal mine methane-air mixture with mine water to form hydrated gas facilitates the dual objectives of utilizing coal mine gas and desalinating mine water within a single technological process, thereby yielding pure methane, drinking water, and dry salts as final products. Collectively, these advancements enable the generation of new beneficial products, promote the comprehensive development of coal deposit resources, and markedly mitigate the deleterious effects on the environment. A chemical analysis of mine water was conducted, revealing significant mineralization levels that categorize the mine water as saline and underscore the imperative for desalination. The properties and chemical composition of mine methane gas taken from surface degassing wells were analysed. The analytical data indicate that the composition of coal mine methane is close to natural gas, with notable homologues including ethane and propane. The gas mixture is also characterized by the presence of nitrogen (1.69–4.65%), as well as lesser quantities of oxygen (0.08–0.29%) and carbon dioxide (0.19–0.40%). Further analysis of the data reveals fluctuations in methane concentration under varying operational conditions of the wells throughout their functional lifespan. The extracted methane is optimally suited for utilization as a precursor in the generation of what is termed ‘turquoise’ hydrogen, applying the technology of steam-plasma pyrolysis. We delineate various strategies and methodologies that could be employed to harness substantial volumes of mine water and gas from coal deposits for the production of hydrogen fuel, desalinated water, and technical salts as resultant products. The resultant water, possessing adequate quality, is anticipated to avert the contamination of aquatic ecosystems with dissolved mineral salts. Potential beneficiaries of the combined processing technology of mineralized mine water may encompass coal enterprises, joint-stock companies, and, in the foreseeable future, entities within other extractive industries.