The environmental problems of alumina production, caused by the formation of waste gas treatment plants are considered. The phase and chemical composition and microstructure of dust from gas treatment facilities of thermal power plants has been studied. It has been suggested to use gas-cleaning plant wastes as active mineral additives in road mixtures. The possibility of using electrofilter dust as a mineral powder for asphalt concrete has been experimentally verified. It has been established that the properties of asphalt concrete using the dust from gas cleaning facilities of heat-power equipment of alumina production are practically the same as those of asphalt concrete prepared on the crushed limestone rock of Mazul limestone mine.

Methods of utilization of process dust by returning it to the rotary kiln are considered. To reduce the emission of fine dust of electrostatic precipitators into the atmosphere and to increase the efficiency of its utilization it was proposed to remove it from the furnace turnover, not to mix it with the dust of the dust chamber, and then to dispose of it according to a separate scheme. It has been established that the return to the correction pool of the raw materials workshop of JSC RUSAL Achinsk of fine technological dust caught in the 1st, 2nd and 3rd electric field of the sintering furnace electrofilters will reduce the consumption of limestone to 530 thousand tons per year, while improving the overall environmental situation at the industrial enterprise.

To reduce the impact of alumina sludge storage on the environment, a number of environmental technical solutions have been tested and implemented. Laying a polymeric film on a bed slurry maps and the construction of artificial water level decrease led to the absence of anthropogenic interference, and created favorable conditions for ensuring the stability of the ecological system in the area adjacent to the sludge storage. After the implementation of the environmental events area negative impact of sludge decreased to 150–200 m from the contour of the slurry of the map, outside this zone there are qualitative changes in the chemical composition of groundwater, the alkaline reaction of the environment decreases less than 8.0 units, chemical composition of groundwater is virtually the same background.

For the disposal of dust from gas-cleaning facilities of sintering furnaces, in addition to a closed dust circulation scheme, a partial removal of it from electric filters for subsequent use in road construction is proposed. It is shown that dust collected from 4–5 fields of electrofilters containing chlorides and sulfates should be used as additives in a nepheline-crushed stone mixture, which will allow obtaining the required high frost resistance indicators of road mix samples.

A technology has been developed and tested on an industrial scale for the restoration of disturbed lands contaminated with alkali-containing sludge waters. In the process of field research, the use of various neutralized soil neutralizers in the area adjacent to the alumina sludge storage facility was verified. Tests confirmed that the most effective neutralizer of alkaline soil is ammonium sulfate, which reduces the pH of the aqueous extract from 10,2 to 8,2 units. Using non-toxic technogenic materials, substrate compositions have been developed to restore the potentially fertile layer and the technology of ecological rehabilitation of disturbed lands for their subsequent use has been tested.