ИСТИНА

In this research, we present the ecologically safe way of processing of ferriferous slimes, produced as by-products of underground water ozonation, as raw materials in the synthesis of the catalysts suitable for cleaning of dry air-gas streams from residual amounts of ozone. The technology of underground water purification by ozonation in combination with the sorption on the granulated activated absorbent carbon (GAC) and activated coal fiber sorbents (AF) provides full deodorization, disinfection, and decrease of concentration of ions of the total iron from 0,5 - 5 mg/l to the maximum permissible concentration (MPC) for underground water of 0.03 mg/l or even lower amounts. About 4 tons of ferriferous slimes are annually formed at the water treatment station in Moscow (Figure 1a) as the result of the return washing of the pressure filters containing granular hydroanthracite. It is very desirable to find ways of utilization of this by-product, containing iron oxides. The synthesis of ozone and its application in water purification is a good example of implementation of green chemistry principles in the industry, for example the raw materials for the production of ozone and its decompozition are renewable.