[en] The paper compares two methods for containment of liquid wastes from nuclear power stations, both of which are being studied in the USSR: (1) underground disposal in deep aquifers which can be relied upon to remain isolated from higher and lower aquifers by confining strata; and (2) solidification by bituminization. Flow charts of the waste processing system and the layout of equipment are presented and the reliability of these methods in the context of nuclear power stations with high-power RBMK-1000 channel-type reactors is discussed. An analysis is made of technical and economic criteria and of these waste disposal techniques from the point of view of radiological safety. On the basis of this analysis a method is chosen for introduction on an industrial scale. (author)