[en] The possibility of application of nano powders for solution of ecological problems is discussed in this paper. The dispersed, phase and chemical compositions of nano powders produced by electrical explosion of aluminium wires in water depending on electrical parameters were investigated. Very active oxide- hydroxide phases can be used for water purification from ions of heavy, radioactive metals, organic compounds. Another product of interaction of aluminium particles with water is production of hydrogen with the transformation ratio 100 % without special additives. The tribological characteristics of industrial oil after treatment with electrical explosion of copper wires were studied. It was obtained decrease of the friction constant to 40 %. Use of nano powder can lead to increasing lubricating oil time and prevent pollution of environment