A method for treatment of coloured wastewater

• Main Authors: Idris, Azni, Abdul Razak, Putri Razreena, Hashim, Rohani, Abdul Rahman, Rakmi, Ibrahim, Zaharah, Mat Ghani, Rahani
• Format: Patent
• Published: 2012
• Online Access: http://psasir.upm.edu.my/id/eprint/34118/
• Institution: Universiti Putra Malaysia

The present invention relates to a method for treatment of coloured wastewater, characterized by the steps of conveying wastewater into a primary clarifier (110) to separate solids from liquids in the wastewater; conveying the wastewater from the primary clarifier (110) into an anaerobic reactor (130), wherein in the wastewater is circulated within the anaerobic reactor (130); collecting effluent from the anaerobic reactor (130) and conveying the effluent into an aerobic reactor (150); wherein the anaerobic reactor (130) and the aerobic reactor (150) each independently comprises a dye decolourizing bacteria mixture comprising of Enterococcus faecalis, Lysinibacillus fusiformis and Brevibacillus panacihumi in a ratio of 4:2:1; wherein the anaerobic reactor (130) and the aerobic reactor (150) each independently includes a biofilm medium for enhancing entrapment of the dye decolourizing bacteria; flowing the effluent from the aerobic reactor (150) into a secondary clarifier (170) for solids removal.