Abstract: The necessity of wastewater treatment from hexavalent chromium compounds with mutagenic and carcinogenic properties is determined. There are given the known methods of sewage treatment from chromate ions and proved that the use of corundum crystals production waste as sorption material is promising. By XRD method the mineralogical composition of waste including oxides and hydroxides of aluminum in various versions is determined. XRF wave analysis has defined the component composition of waste, comprising over 97% of aluminum compounds in the form of oxides and hydroxides. The waste particles specific surface area was determined using a multipoint BET Method. Using a scanning electron microscope there were studied the morphological features of the waste particles and the complexity of their structure is revealed. There are constructed and analyzed the sorption and desorption isotherms of chromate ions on the waste components. A negative adsorption in the concentration range of chromate ions from 10-60 mg L-1 was revealed, the physical character of reversible chromate ions sorption processes was determined. The efficiency of the cleaning process modeling solutions up to 70% is shown.