Biodegradability assessment of ozonated raw and biotreated pharmaceutical wastewater

I. Arslan-Alaton; I. Akmehmet Balcioglu

doi:10.1007/s00244-002-1235-y

Biodegradability assessment of ozonated raw and biotreated pharmaceutical wastewater

I. Arslan-Alaton^*
, I. Akmehmet Balcioglu

^*Corresponding author for this work

Department of Environmental Engineering

Bogazici University

Research output: Contribution to journal › Article › peer-review

41 Citations (Scopus)

Abstract

The activated sludge specific oxygen uptake rate (SOUR) and BOD₅/COD ratios of biologically pretreated pharmaceutical wastewater were analyzed and compared to assess relative changes in biotreatability during ozonation at a rate of 7.4 g/(L × h) for 4 h. An appreciable COD removal (41%) was achieved by the initial biological treatment process, whereas ozonation was more effective in reducing the UV-sensitive aromatic compounds present in the pretreated effluent. Sequential treatment using activated sludge + ozonation processes resulted in an average COD removal efficiency of 48%, and a proceeding biotreatment stage increased the overall COD removal to 53%. An optimum ozone dose in the range of 1,8543,708 mg/L corresponding to a specific ozone input rate of 0.23-0.46 mg O₃/mg COD_o existed where SOUR (3.7 × 10^-3 mg O₂/[mg MLSS × min] for ozonation at pH 8) and BOD₅/ COD (0.57) as well as the proceeding biological COD removal yield Y_COD (average 8 mg COD/mg MLSS) exerted maximum values.

Original language	English
Pages (from-to)	425-431
Number of pages	7
Journal	Archives of Environmental Contamination and Toxicology
Volume	43
Issue number	4
DOIs	https://doi.org/10.1007/s00244-002-1235-y
Publication status	Published - Nov 2002

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 6 Clean Water and Sanitation

Access to Document

10.1007/s00244-002-1235-y

Cite this

@article{65d6065dd05b4c41a324e81168df38c8,

title = "Biodegradability assessment of ozonated raw and biotreated pharmaceutical wastewater",

abstract = "The activated sludge specific oxygen uptake rate (SOUR) and BOD5/COD ratios of biologically pretreated pharmaceutical wastewater were analyzed and compared to assess relative changes in biotreatability during ozonation at a rate of 7.4 g/(L × h) for 4 h. An appreciable COD removal (41\%) was achieved by the initial biological treatment process, whereas ozonation was more effective in reducing the UV-sensitive aromatic compounds present in the pretreated effluent. Sequential treatment using activated sludge + ozonation processes resulted in an average COD removal efficiency of 48\%, and a proceeding biotreatment stage increased the overall COD removal to 53\%. An optimum ozone dose in the range of 1,8543,708 mg/L corresponding to a specific ozone input rate of 0.23-0.46 mg O3/mg CODo existed where SOUR (3.7 × 10-3 mg O2/[mg MLSS × min] for ozonation at pH 8) and BOD5/ COD (0.57) as well as the proceeding biological COD removal yield YCOD (average 8 mg COD/mg MLSS) exerted maximum values.",

author = "I. Arslan-Alaton and \{Akmehmet Balcioglu\}, I.",

year = "2002",

month = nov,

doi = "10.1007/s00244-002-1235-y",

language = "English",

volume = "43",

pages = "425--431",

journal = "Archives of Environmental Contamination and Toxicology",

issn = "0090-4341",

publisher = "Springer",

number = "4",

}

TY - JOUR

T1 - Biodegradability assessment of ozonated raw and biotreated pharmaceutical wastewater

AU - Arslan-Alaton, I.

AU - Akmehmet Balcioglu, I.

PY - 2002/11

Y1 - 2002/11

N2 - The activated sludge specific oxygen uptake rate (SOUR) and BOD5/COD ratios of biologically pretreated pharmaceutical wastewater were analyzed and compared to assess relative changes in biotreatability during ozonation at a rate of 7.4 g/(L × h) for 4 h. An appreciable COD removal (41%) was achieved by the initial biological treatment process, whereas ozonation was more effective in reducing the UV-sensitive aromatic compounds present in the pretreated effluent. Sequential treatment using activated sludge + ozonation processes resulted in an average COD removal efficiency of 48%, and a proceeding biotreatment stage increased the overall COD removal to 53%. An optimum ozone dose in the range of 1,8543,708 mg/L corresponding to a specific ozone input rate of 0.23-0.46 mg O3/mg CODo existed where SOUR (3.7 × 10-3 mg O2/[mg MLSS × min] for ozonation at pH 8) and BOD5/ COD (0.57) as well as the proceeding biological COD removal yield YCOD (average 8 mg COD/mg MLSS) exerted maximum values.

AB - The activated sludge specific oxygen uptake rate (SOUR) and BOD5/COD ratios of biologically pretreated pharmaceutical wastewater were analyzed and compared to assess relative changes in biotreatability during ozonation at a rate of 7.4 g/(L × h) for 4 h. An appreciable COD removal (41%) was achieved by the initial biological treatment process, whereas ozonation was more effective in reducing the UV-sensitive aromatic compounds present in the pretreated effluent. Sequential treatment using activated sludge + ozonation processes resulted in an average COD removal efficiency of 48%, and a proceeding biotreatment stage increased the overall COD removal to 53%. An optimum ozone dose in the range of 1,8543,708 mg/L corresponding to a specific ozone input rate of 0.23-0.46 mg O3/mg CODo existed where SOUR (3.7 × 10-3 mg O2/[mg MLSS × min] for ozonation at pH 8) and BOD5/ COD (0.57) as well as the proceeding biological COD removal yield YCOD (average 8 mg COD/mg MLSS) exerted maximum values.

UR - https://www.scopus.com/pages/publications/0036840541

U2 - 10.1007/s00244-002-1235-y

DO - 10.1007/s00244-002-1235-y

M3 - Article

C2 - 12399913

AN - SCOPUS:0036840541

SN - 0090-4341

VL - 43

SP - 425

EP - 431

JO - Archives of Environmental Contamination and Toxicology

JF - Archives of Environmental Contamination and Toxicology

IS - 4

ER -

Biodegradability assessment of ozonated raw and biotreated pharmaceutical wastewater

Abstract

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this