Abstract:

This paper introduces some engineering examples of advanced treatment of coking wastewater after biochemical treatment.Considering the features of biochemical tail water,a new treatment process combining pipe chute sedimentation,primary filtration and resin absorption is proposed.The removal rate of chromaticity,total cyanide content and suspended solid of tail water after treatment are 89.7%,88.1% and 69.6% respectively.The indexes of discharged water are better than that specified in Emission Standard of Pollutants for Coking Chemical Industry GB 16171—1012.This method has good application prospect.