Application of HCR to Promoting Treatment of Printing and Dyeing Wastewater
The technology of HCR was successfully applied to a textile plant to improve the treatment of printing and dyeing wastewater by technical renovation of the existing facilities. The quantity of influent wastewater was 11,000m3/d, COD 2,200~2,500mg/L, pH 12 and chroma 600~800 multiple before the treatment while the treatment efficiency was highly improved with effluent COD 360mg/L, chroma 300 multiple, 86% and 50% separately for COD removal and chroma removal. The process is cost effective and stable operated.