Performance of two-stage upflow anaerobic sludge blanket reactor treating wastewater from latex-processing factory

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Author list: Phoolphundh S., Hathaisamit K., Wongwises S.

Publisher: American Society of Civil Engineers

Publication year: 2013

Journal: Journal of Environmental Engineering (0733-9372)

Volume number: 139

Issue number: 1

Start page: 141

End page: 146

Number of pages: 6

ISSN: 0733-9372

eISSN: 1943-7870

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84872561259&doi=10.1061%2f%28ASCE%29EE.1943-7870.0000604&partnerID=40&md5=584e4d2adfd3798148f6e12deee24fca

Languages: English-Great Britain (EN-GB)

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Abstract

In this study, a relatively high-rate treatment (hydraulic retention time ≤2.5 days) of latex-processing wastewater was achieved in a two-stage upflow anaerobic sludge blanket reactor. A maximum acid production rate of 1.8 g L-1 d-1 acetic acid was obtained when the acidogenic reactor was operated over a hydraulic retention time (HRT) of 4 hr. Total chemical oxygen demand (COD) and sulfate removal efficiencies of the system were 51.6 and 75.9%, respectively, when the methanogenic reactor was operated over an HRT of 24 h. The specific acidogenic activity of granular sludge in the acidogenic and methanogenic reactor varied between 1.33-2.02 g COD g volatile suspended solids (VSS)-1 d-1, and the specific methanogenic activity ranged from 0.0078 to 0.0138 g COD-CH4 g VSS-1 d-1. Microbial diversity monitoring using the denaturing gradient gel electrophoresis technique revealed that there was more sulfate-reducing bacteria in both reactors than archea bacteria. © 2013 American Society of Civil Engineers.

Keywords

Acidogenic reactor, Latex-processing wastewater, Methanogenic reactor, Sulfate reduction, Two-stage upflow anaerobic sludge blanket system