A pilot-scale anaerobic moving-bed biofilm reactor with PVA gel beads as media for the treatment of fish canning industry wastewater | Zendy

Akarawin Jirasaranporn | Zendy; Krittayapong Jantharadej | Zendy; Kritchart Wongwailikhit | Zendy; Chamorn Chawengkijwanich | Zendy; Jenyuk Lohwatcharin | Zendy; Benjaporn Boonchayaanant Suwannasilp | Zendy

Open Access

A pilot-scale anaerobic moving-bed biofilm reactor with PVA gel beads as media for the treatment of fish canning industry wastewater

Author(s) -

Akarawin Jirasaranporn,

Krittayapong Jantharadej,

Kritchart Wongwailikhit,

Chamorn Chawengkijwanich,

Jenyuk Lohwatcharin,

Benjaporn Boonchayaanant Suwannasilp

Publication year - 2022

Publication title -

journal of water reuse and desalination

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.548

H-Index - 16

eISSN - 2408-9370

pISSN - 2220-1319

DOI - 10.2166/wrd.2022.090

Subject(s) - wastewater , biofilm , chemical oxygen demand , amplicon sequencing , methanosaeta , pulp and paper industry , chemistry , residence time distribution , recirculating aquaculture system , residence time (fluid dynamics) , volumetric flow rate , environmental engineering , microbiology and biotechnology , environmental chemistry , environmental science , fish <actinopterygii> , 16s ribosomal rna , biology , fishery , aquaculture , bacteria , mineralogy , biochemistry , geology , inclusion (mineral) , engineering , genetics , quantum mechanics , physics , gene , geotechnical engineering

This research aims to investigate the performance of a pilot-scale anaerobic moving-bed biofilm reactor (AnMBBR) using PVA gels as media for the treatment of real wastewater from a fish canning factory. The chemical oxygen demand (COD) removal efficiencies at different organic loading rates (OLRs) were investigated at 3.0, 4.3, 6.5, and 8.7 kg COD/m3day by adjusting the flow rates to 350, 500, 750 and 1,000 L/d, respectively. The soluble COD removal efficiencies of the system at flow rates of 350, 500, 750, and 1,000 L/d were 81.0 ± 12.4%, 76.8 ± 8.2%, 74.7 ± 6.2%, and 70.6 ± 12.4%, respectively. According to the residence time distribution (RTD) tests at the highest and lowest flow rates, the mean residence times of both flow rates were significantly higher than the theoretical residence time, indicating very strong external recirculation inside the AnMBBR. The results suggest a 3-pass flow pattern through the AnMBBR. From 16S rRNA gene amplicon sequencing (MiSeq, Illumina) and scanning electron microscopy (SEM) analysis, Methanosaeta, acetoclastic methanogens, were the predominant microorganisms in the system. Most of the microorganisms were located within a 1.994 ± 0.266 mm depth from the PVA gel surface, with two distinct layers.

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