Deep ice drilling in Polar Regions plays a key role in paleo-climate��microbiological and glaciological researches�� For deep ice and subglacial coring the special purpose-built electromechanical cable-suspended drills with bottom-hole circulation are designed and explored�� Used at present drilling fluid circulation systems are specified by very high fluid wastes during processing�� Measurements in deep drilling projects in Antarctic and Greenland ice sheets showed that 25%--40% of the drilling fluid��pumped into the hole��is retrieved to the surface with cable and drill��and up to 45% of retrieved fluid goes to waste�� This leads not only to increasing of the fluid consumption and cost of the project in general but also to severe contamination of air��surface and nearsurface snow-firn layers at the drilling site�� In order to reduce wastes and environmental impact��it is proposed to modify drilling fluid processing system by avoiding of evaporation and leakages of fluid as far as practicable�� Drilling fluid is prepared and pumped into the hole according to predetermined program on semiautomatic mode�� and volume and density of blended and pumped into the hole drilling fluid are measured continuously�� Components of the drilling fluid are stored and mixed in the special closed containers equipped by pressure relief valves�� Separation of drilling fluid from ice cuttings is carried out by two steps: firstly��fluid is separated with hydro extractor and then with thermal separator�� To reduce the amount of removed drilling fluid with cable special squeezing collar is installed on the borehole mouth�� All these arrangements are able to decrease drilling fluid wastes in many times��