Treatment of saline wastewater by a sequencing batch reactor with emphasis on aerobic granule formation

Bioresource Technology
Ensiyeh TaheriAkbar Hassanzadeh

Abstract

The formation and characteristics of aerobic granules in a sequencing batch reactor (SBR), designed to treat saline wastewater, have been investigated in this study. Granule structure was determined using scanning electron microscope (SEM), and polymerase chain reaction (PCR). Granules formed in the reactors were grouped into light brown granules and black granules that looked 'fluffy'. The first group was more dense than the second group and consequently had a higher settling velocity. The densities of the first and the second group were 0.056 and 0.035 g/ml, respectively. While the corresponding settling velocity were 1.35 and 0.97 cm/s, respectively. The kinetic coefficients K(s), k(d), k and Y in saline substrate (10 g NaCl/l) were estimated to be 195 mg s COD/l, 0.025 g VSS/g VSS d, 2.29 g s COD/g VSS d and 0.45 mg VSS/mg s COD, respectively. Analysis of granules using 16S rDNA sequences showed that the dominant microbial species was Klebsiella oxitoca. Minerals and the protozoan community in saline substrate facilitated the formation of granules. It was concluded that the fluffy granules are a variation of the light brown granules which are resistant to salt.

References

Oct 31, 2006·Water Research·Olivier Lefebvre, René Moletta
Nov 6, 2007·Water Research·Sunil S AdavJoo-Hwa Tay
Mar 12, 2008·Bioresource Technology·Yong LiHailou Xu
Jun 25, 2008·Biotechnology Advances·Sunil S AdavJoo-Hwa Tay
Jul 11, 2008·Bioresource Technology·Sunil S AdavJuin-Yih Lai
Jun 23, 2009·Bioresource Technology·Sunil S AdavJuin-Yih Lai
Oct 3, 2009·Journal of Hazardous Materials·Sunil S AdavJuin-Yih Lai
Jun 12, 2010·Journal of Hazardous Materials·Lin LiuYuan Fu
Jun 29, 2010·Water Research·Khalida MudaMohd Zaini Nawahwi

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Citations

Apr 22, 2015·Journal of Environmental Management·Ben van den AkkerJoerg Krampe
Feb 8, 2019·Journal of Environmental Health Science & Engineering·Ensiyeh TaheriHenri Spanjers
Oct 5, 2020·Water Research·Weigang WangYayi Wang

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