Evaluation of textile wastewater treatment in sequential anaerobic moving bed bioreactor - aerobic membrane bioreactor. (June 2021)

• Record Type: Journal Article
• Authors: Kozak, Melike; Cırık, Kevser; Dolaz, Mustafa; Başak, Serden
• Is Part Of: Process biochemistry. Volume 105(2021)
• Page Start: 62
• Page End: 71
• Publication Date: 2021-06
• Subjects: Anaerobic moving bed bioreactorr -- Aerobic membrane reactor -- Real textile wastewater -- Alphaproteobacteria -- Silicon; Biochemical engineering -- Periodicals; Biotechnology -- Periodicals; Biochemistry -- periodicals; Biotechnology -- periodicals; Chemical Engineering -- periodicals; Génie biochimique -- Périodiques; Biotechnologie -- Périodiques; Biochemical engineering; Biotechnology; Periodicals; 660.63
• DOI: 10.1016/j.procbio.2021.03.013
• Languages: English
• ISSNs: 1359-5113

Abstract

Graphical abstract: Highlights: Sequencing AnMBBR-AeMBR was successful by means of raw textile wastewater treatment. Membrane biofouling can be directly correlated to Alphaproteobacteria . Silicon originated from textile wastewater caused chemical membrane fouling. PAC was effective for improving contaminant removal and fouling. Abstract: In this study, the treatability of real textile wastewater [dissolved organic carbon (DOC): 500 mg/L), color: 6383 Pt-Co, sulfate: 362 mg/L)] was investigated in sequential anaerobic moving bed bioreactor (AnMBBR) and aerobic membrane bioreactor (AeMBR). AnMBBR was filled with 40 % career material (Kaldnes K1). The effect of different hydraulic retention times (HRTs) (6−48 h) and powdered activated carbon (PAC) addition (1 g/L) was investigated for system optimization. Sequential AnMBBR- AeMBR was successfully operated for textile wastewater treatment corresponding to 92 %, and 90 % dissolved organic carbon (DOC) and color removals, respectively. The effluent quality, dropped under 45 Pt-Co and 18 mg/L effluent values, was relatively high and complianted with discharge standards. The Fourier transform infrared spectroscopy (FT-IR) analysis showed that primary amines are successfully removed in AeMBR effluent. Fouling in AeMBR was increased when HRT was reduced, however, improved by 90 % at PAC addition conditions. Except for soluble microbial products (SMP) and soluble extracellular polymeric substances (EPS), it was observed that silicon (Si) (13.16 %) has an important role in fouling which was confirmed by scanning electron microscopy (SEM) and Energy-Dispersive X-ray (EDX) analysis. Additionally, microbial community structures indicated that the membrane fouling can be caused by Alphaproteobacteria (80 %) which was the dominant culture in the biofilm layer at a maximum fouling rate.