[en] The use of EB technologies for protection of the environment is enough developed at present. The technology of flue gas treatment is brought up to the commercial application and is successfully used in large-scale plants. Waste water treatment needs to be studied in each individual case and, in principle, is ready to be commercially used. However, to have advantages over existing processes, the electron beam process should have cost-effective and reliable in operation. Therefore, high power accelerators (400 kW) are developed for environmental application and they show the decrease in the cost of construction and operation of electron beam plant. In other way to reduce the cost for wastewater treatment, radical reactions accompanied by the other processes are introduced, and the synergistic effect upon the use of combined methods such as electron beam treatment with ozonation, biological treatment and physico-chemical adsorption and others also show the improvement of the effect of electron beam treatment for the wastewater purification. (author)