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Performance evaluation of the pilot scale upflow anaerobic sludge blanket - Downflow hanging sponge system for natural rubber processing wastewater treatment in South Vietnam.

Authors :
Watari T
Mai TC
Tanikawa D
Hirakata Y
Hatamoto M
Syutsubo K
Fukuda M
Nguyen NB
Yamaguchi T
Source :
Bioresource technology [Bioresour Technol] 2017 Aug; Vol. 237, pp. 204-212. Date of Electronic Publication: 2017 Mar 07.
Publication Year :
2017

Abstract

A pilot-scale upflow anaerobic sludge blanket (UASB)-downflow hanging sponge system (DHS) combined with an anaerobic baffled reactor (ABR) and a settling tank (ST) was installed in a natural rubber processing factory in South Vietnam and its process performance was evaluated for 267days. The UASB reactor achieved a total removal efficiency of 55.6±16.6% for chemical oxygen demand (COD) and 77.8±10.3% for biochemical oxygen demand (BOD) with an organic loading rate of 1.7±0.6kg-COD·m <superscript>-3</superscript> ·day <superscript>-1</superscript> . The final effluent of the proposed system had 140±64mg·L <superscript>-1</superscript> of total COD, 31±12mg·L <superscript>-1</superscript> of total BOD, and 58±24mg-N·L <superscript>-1</superscript> of total nitrogen. The system could significantly reduce 92% of greenhouse gas emissions and 80% of hydraulic retention times compared with current treatment systems.<br /> (Copyright © 2017. Published by Elsevier Ltd.)

Details

Language :
English
ISSN :
1873-2976
Volume :
237
Database :
MEDLINE
Journal :
Bioresource technology
Publication Type :
Academic Journal
Accession number :
28318934
Full Text :
https://doi.org/10.1016/j.biortech.2017.02.058