Laboratory and full-scale performances of integrated anaerobic granule-aerobic biofilm-activated sludge processes for high strength recalcitrant paint wastewater
Journal
Bioresource Technology
Journal Volume
310
Date Issued
2020
Author(s)
Abstract
Sustainable treatment of wastewaters generated from paint production is increasingly posing an environmental concern. Recalcitrant paint wastewaters are mostly treated by energy and cost intensive physicochemical methods like incineration, distillation or advanced oxidation. This paper reported for the first time a case study applying biological treatment processes to properly handle a high-strength recalcitrant paint wastewater with 5-day biochemical oxygen demand (BOD5)/chemical oxygen demand (COD) less than 0.02. A biological treatment scheme integrating anaerobic granular sludge blanket reactor, aerobic carrier biofilm reactor and aerobic activated sludge bioreactor was proposed and examined. Laboratory and full-scale trials demonstrated satisfactory operation with overall COD removal up to 99%. Besides yielding consistent effluent quality conforming to the discharge limits, the full-scale plant gained considerable savings in operating cost over a 5-year operation. With proper microbial adaptation and cultivation, as well as adequate reactor and process designs, the scheme offers a good feasibility for efficient and cost-effective treatment of the high strength and recalcitrant paint wastewater. © 2020 Elsevier Ltd
Subjects
Anaerobic granular sludge; Integrated anaerobic–aerobic biological processes; Paint wastewater; Recalcitrant organics
Other Subjects
Activated sludge process; Biochemical engineering; Biochemical oxygen demand; Biofilms; Biological water treatment; Bioreactors; Cost effectiveness; Distillation; Effluents; Incineration; Oxygen; Paint; Water quality; Activated sludge bioreactors; Anaerobic granular sludge; Biofilm activated sludge process; Biological treatment process; Cost effective treatments; Environmental concerns; Physicochemical methods; Sustainable treatments; Wastewater treatment; benzoic acid; glycerol; maleic acid; maleic anhydride; paint; pentaerythrityl tetranitrate; phthalic acid; recalcitrant paint; terephthalic acid; unclassified drug; vegetable oil; activated sludge; anaerobic digestion; biofilm; integrated approach; laboratory method; performance assessment; physicochemical property; wastewater treatment; activated sludge; anaerobic granular sludge; analytic method; Article; biochemical oxygen demand; chemical composition; chemical oxygen demand; dilution; distillation; incineration; oxidation; paint industry; priority journal; seed sludge; waste water management; anaerobic growth; biofilm; bioreactor; sewage; waste water; Anaerobiosis; Biofilms; Bioreactors; Paint; Sewage; Waste Disposal, Fluid; Waste Water
Type
journal article