Wastewater from the pigment industry has high levels of organics and is known as hardly biodegradable. The objective of this study is to evaluate the applicability of aerobic fixed-bed biofilm reactor packed with ceramic support carrier for the pigment wastewater treatment. Orange 2(widely used azo pigment) adsorption experiment onto biofilm and activated sludge, and continuous treatment experiments were performed. In batch adsorption experiment, maximum adsorption quantity of biofilm was at least two times higher than that of activated sludge. In continuous experiment using aerobic fixed-bed biofilm reactor, the influent concentration of COD and Orange 2 were 75∼500㎎/ℓ(0.45∼3.00㎏ COD/㎥.day), 5∼50㎎/ℓ (0.03-0.30㎏ Orange 2/㎥.day), respectively. At a COD loading rate of 2.5㎏ COD/㎥.day and Orange 2 loading rate of 0.18㎏ Orange 2/㎥.day, removal efficiency of COD and Orange 2 were over 95%, 97%, respectively.

• 박영식(서봉리사이클링(주)) | Young Seek Park
• 안갑환(부산가톨릭대학교 산업환경시스템학부) | Kab Hwan Ahn