METHOD FOR PURIFICATION OF GROUND WATER POLLUTED WITH OIL PRODUCTS Russian patent published in 1995 - IPC

FIELD: environment protection. SUBSTANCE: method for purification of ground water polluted with oil products includes evaluation of pollution intensity of ground water, hole drilling, pumping out of ground water, its aeration and return to its bearing horizon. In so doing, preliminarily separated from ground water is bacterial culture of natural strain, and the most active bacteria are determined and their biomass is prepared. Water is pumped out with removal of settled matter from it, and with residual content of oil products in water of 0.1-1 g/l, prepared biomass is introduced into water in mixture with K-, N- and P-containing fertilizers and microelements. Pumping out of water, its settling and aeration are effected in hole, with periodic repetition of the process and subsequent introduction of biomass. EFFECT: higher efficiency. 2 cl