Anaerobic–anoxic–oxic biological treatment of high-strength, highly recalcitrant polyphenylene sulfide wastewater. (March 2023)

• Record Type: Journal Article
• Authors: Guo, Hui; Yao, Hai-Yong; Huang, Qi-Qi; Li, Ting; Show, De-Yang; Ling, Ming; Yan, Yue-Gen; Show, Kuan-Yeow; Lee, Duu-Jong
• Is Part Of: Bioresource technology. Volume 371(2023)
• Publication Date: 2023-03
• Subjects: Integrated anaerobic–anoxic–oxic -- Nitrogen removal -- Polyphenylene sulfide wastewater; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2023.128640
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Anaerobic–anoxic–oxic treatment treats high-strength PPS wastewater. High feed chemical oxygen demand of up to 7, 043 mg/L. 0.11 g TKN/L.d and 400 mg NH3 /L was removed. 1470 mg/L sulfide was transformed with good process stability. A2O scheme offers resilient and robust treatment for high-strength PPS wastewater. Abstract: This paper outlines an integrated anaerobic–anoxic–oxic (A2O) treatment scheme for high-strength, highly recalcitrant wastewater from the production of polyphenylene sulfide (PPS) resins and their composite chemicals. An integrated anaerobic granular sludge blanket (GSB) and anoxic–oxic (AO) reactor indicated that the A2O removed chemical oxygen demand (COD) of up to 7, 043 mg/L with no adverse impact from high total dissolved solids (25, 000 mg/L) on the GSB COD removal and effluent suspended solids. At a Total Kjeldahl Nitrogen (TKN) nitrification load of 0.11 g TKN/L.d and 400 mg NH3 /L, almost 99 % of the NH3 was degraded with effluent NH3 < 5 mg/L, meeting the limit of 35 mg/L. High S 2- levels of up to 1470 mg/L can be transformed through aerobic microbial degradation to meet a limit of 1.0 mg/L. With proper microbial acclimation and process designs, the integrated A2O scheme offers a resilient and robust treatment for high-strength recalcitrant PPS wastewater.