EFFECT OF BROMINATED FLAME RETARDANT ON BIOLOGICAL NITROGEN AND PHOSPHORUS REMOVAL

ZHAO Min-juan; SHEN Yuan-yuan; GAO Tian-peng; YAN Jia-cong; YANG Ji-huan

doi:10.13205/j.hjgc.202012009

Volume 38 Issue 12

Apr. 2021

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2020 > 38(12): 49-53,111

ZHAO Min-juan, SHEN Yuan-yuan, GAO Tian-peng, YAN Jia-cong, YANG Ji-huan. EFFECT OF BROMINATED FLAME RETARDANT ON BIOLOGICAL NITROGEN AND PHOSPHORUS REMOVAL[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(12): 49-53,111. doi: 10.13205/j.hjgc.202012009

Citation:

ZHAO Min-juan, SHEN Yuan-yuan, GAO Tian-peng, YAN Jia-cong, YANG Ji-huan. EFFECT OF BROMINATED FLAME RETARDANT ON BIOLOGICAL NITROGEN AND PHOSPHORUS REMOVAL[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(12): 49-53,111. doi: 10.13205/j.hjgc.202012009

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EFFECT OF BROMINATED FLAME RETARDANT ON BIOLOGICAL NITROGEN AND PHOSPHORUS REMOVAL

doi: 10.13205/j.hjgc.202012009

College of Biological and Environmental Engineering, Xi'an University, Xi'an 710065, China

Received Date: 2020-03-15
Available Online: 2021-04-23

Abstract

Abstract

In order to explore the effect of the emerging pollutants brominated flame retardant (BFR) on the biological nitrogen and phosphorus removal (BNPR), an anaerobic/aerobic/anoxic sequencing batch reactor was established to study the effect of different concentrations of polybrominated diphenyl ether (PBDEs) on the BNPR. The results showed that the effect of PBDEs on BNPR was concentration dependent. Low concentration PBDEs had no significant effect on BNPR and sludge characteristics, but more than 0.1 mg/L PBDEs inhibited BNPR significantly. When the concentration of PBDEs was 2.0 mg/L, the removal efficiency of chemical oxygen demand (COD), ammonia nitrogen and ortho-phosphate (OP) were 73.2%~75.6%, 85.2% and 72.1%~73.6%, respectively, which were significantly lower than those of the blank group. In addition, PBDEs reduced the total suspended solids (TSS) and volatile suspended solids (VSS) in the sludge, and increased the sludge volume index (SVI) and extracellular polymer content. PBDEs inhibited nitrification, denitrification, anaerobic phosphorus release and aerobic phosphorus uptake.
- PBDEs,
- activated sludge,
- extracellular polymer,
- denitrification,
- dephosphorization

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