A novel Pressurized Enriched Oxygen Biological Activated Carbon （PRBAC） method in treating secondary effluent of textile dying-printing & alkali peeling wastewater was configured. The PRBAC reactor simply increased reactor pressure to create an enriched dissolved oxygen （DO） environment to stimulate the bioactivities of microbes on GAC surface for removing refractory organic matter. Rapid Small-Scaled Column Test （RSSCT） was carried out to evaluate the adsorption characteristics of target stream constituents, and over 80% COD components were poorly adsorbable while about 82.5% color inducing matter and 85% UV 254 surrogated matter were readily adsorbable. Compared with performances of normal BAC reactor under conventional DO condition, PRBAC achieved 20%, 10% and 50% more removal in COD, color and NH3-N abatement.
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