Affiliation: | 1.School of Food and Biological Engineering,Jiangsu University,Zhenjiang,China;2.Institute of Life Sciences,Jiangsu University,Zhenjiang,China;3.School of Environmental and Safety Engineering,Jiangsu University,Zhenjiang,China |
Abstract: | ObjectivesTo demonstrate the effectiveness of a novel two-stage system coupling hydrolytic acidification with algal microcosms for the treatment of acrylonitrile butadiene styrene (ABS) resin-manufacturing wastewater.ResultsAfter hydrolytic acidification, the BOD5/COD ratio increased from 0.22 to 0.56, showing improved biodegradability of the wastewater. Coupled with hydrolytic acidification, the algal microcosms showed excellent capability of in-depth removal of COD, NH3–N and phosphorus with removal rates 83, 100, and 89%, respectively, and aromatic pollutants, including benzene, were almost completely removed. The biomass concentration of Chlorella sp. increased from 5 × 106 to 2.1 × 107 cells/ml after wastewater treatment.ConclusionsThis two-stage coupling system achieved deep cleaning of the benzene-containing petrochemical wastewater while producing greater algae biomass resources at low cost. |