GEOCHEMICAL TYPES OF AMMONIA BEARING GROUND WATERS

It is established that in natural and technogenic environment a new ge ochemical groundwater type appears presented by the ammonia bearing wa ters with the predominant ammonia content in respect of other cations. The increase of ammonia content is governed by the following geochemi cal factors: decrease of groundwater redox potential; pH decrease; amm onification of organic matter; increase of water mineralisation. Main geochemical types of the natural ammonia bearing ground waters are rec ognised: acidic waters of different origin; highly mineralised brines of salt-rock bearing structures; brines of oil-gas bearing regions; an oxygen waters of upper water bearing strata in artesian basins. The fo rmation of polluted groundwaters is governed by the existence of inten sive ammonia source in the industrial and agriculture wastes. Three ma in types of such waters are distinguished: acidic waters with high red ox potential; near neutral waters with high organic matter content and low positive values of redox potential; alkaline waters with low posi tive and negative values of redox potential. It is concluded that in r ecent time the ground waters are subjected to ammonia content increase resulted in the deterioration of its environmental conditions. It is governed by the pollution of upper water bearing strata and successive decrease of its redox potential.