A two-stage system coupling hydrolytic acidification with algal microcosms for treatment of wastewater from the manufacture of acrylonitrile butadiene styrene (ABS) resin
To 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.
After 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.
This two-stage coupling system achieved deep cleaning of the benzene-containing petrochemical wastewater while producing greater algae biomass resources at low cost.
KeywordsAcrylonitrile butadiene styrene resin wastewater Algal microcosms Biodegradability Chlorella Hydrolytic acidification Microbial community
This research was funded by the National Natural Science Foundation of China (21506084, 21406093, 31770394), the China Postdoctoral Science Foundation (2015T80502), the Senior Talent Scientific Research Initial Funding Project of Jiangsu University (14JDG024), a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) and the Training Project of the Young Core Instructor of Jiangsu University. We thank Edanz Editing China (www.liwenbianji.cn/ac), for editing the English text of a draft of this manuscript.
Supplementary Table 1—The quality of original ABS resin manufacturing wastewater.
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