Analysis and comparison of technologies used for wastewater treatment in existing coke chemical plants (CCP) of the Russian Federation with the best available (BAT) and promising technologies presented in the information and technical directory of ITS 8-2015 was made. It is shown that CCP treatment plants operating in the mode of complete biocleaning, in most technical and technological positions, meet the requirements of BAT. The list of measures to improve compliance of wastewater treatment technologies with the best available technologies is given.