Abstract. 2-Naphthol, which originates widely from various industrial activities, is toxic and thus harmful to human liver and kidney. A new compound biodegradation system was adopted to degrade 2-naphtholcontaminated wastewater. Enzymatic response to 2-naphthol biodegradation in the aqueous phase was also studied. As a co-metabolic substrate, salicylic acid could induce the two microorganis…