Influence of the applied organic load (OLR) on textile wastewater treatment using submerged anaerobic membrane bioreactors (SAMBR) in the presence of redox mediator and powdered activated carbon (PAC).
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Date
2016
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Abstract
This paper evaluated the treatment of textile wastewater in submerged anaerobic membrane
bioreactors (SAMBR) operated on a bench scale. Particularly, the influence of operational conditions, such as
the applied organic rate (OLR) and the dilution factor (for toxicity attenuation) of the textile wastewater, was
evaluated on color and organic matter removal. In addition, the effect of powdered activated carbon (PAC) on
SAMBR-1 and the addition of yeast extract (source of the redox mediator riboflavin) were also investigated.
The results showed that reducing the textile wastewater dilution factor from 10× (phase 1) to 4× (phase 2) and
0× (no dilution) decreased the COD and color removal efficiencies in both SAMBRs, probably due to an
increase in the toxic load. Nevertheless, PAC adsorbed toxic compounds found in the textile wastewater and
helped biomass acclimatization, which led to higher COD and color removal efficiencies in SAMBR-1. The
presence of yeast extract enhanced color removal efficiencies 3-fold in both SAMBRs when they were fed
with undiluted textile wastewater.
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Keywords
Anaerobic treatment, Toxicity, Textile influent, Powdered activated carbon
Citation
BAETA, B. E. L. et al. Influence of the applied organic load (OLR) on textile wastewater treatment using submerged anaerobic membrane bioreactors (SAMBR) in the presence of redox mediator and powdered activated carbon (PAC). Brazilian Journal of Chemical Engineering, São Paulo, v. 33, n. 4, p. 817-825, out./dez. 2016. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322016000400817&lng=en&tlng=en>. Acesso em: 15 set. 2017.