Continuing advance of technologies in the world, requires constant increase in the use of crude oil and gas. Thus, consequently, leads to the formation of an enormous amount of oil wastes and contaminations in oil tanks, settling ponds, oil sludge pits, sea and river tank vessels, at the oil refineries, tank farms and storage terminals. Reason behind such situation lies in the following: absence of the regular tank cleaning works done at the oil exploitation fields, oil and oil products refining and storage areas; absence of modern cleaning stations for river and sea tank vessels and railway tank cars; use of manual cleaning methods at the above-mentioned facilities and absence of modern equipment ensuring zero-waste technology eliminating hydrocarbon contaminations.     
    “Pure World” Group of Companies was established in 2001, putting together skills and knowledge of scientists, manufacturing and service enterprises with an aim to create new perspective technologies for cleaning various facilities from hydrocarbon (oil) contaminations. Presently, Pure World Group of Companies comprises scientists, designers and specialists in different scientific and technological domains. The company possesses a modern scientific and research base comprising research laboratories, design subdivisions, production base and research sites.
    Presently, Pure World Group of Companies comprises scientists, designers and specialists in different scientific and technological domains. The company possesses a modern scientific and research base comprising research laboratories, design subdivisions, production base and research sites.
At the present time  “Pure World” Group of companies has established industrial production of eight basic modifications of Mobile installations MKO for cleaning storage tanks, oil-products transportation, petrochemicals, oil and fats  and food products. 
    The differences between modifications of the complexes by the fuel type are mainly explained by the main and additional equipment applied with them, the architecture of oil product/solution separation labyrinth. The difference in dimensions is explained by the capacity of pump equipment and performance of the complexes. Construction wise complex is embodied in the form of a single module and serviced by 4 operators (incl. truck driver). Complex is connected to 380V no more than 65 kW a power supply source before the start of operations.