Organic loading effects on the treatment of phenolic wastewaters by sequencing batch reactors

G. F. Nakhla; I. M. Al-Harazin; S. Farooq

doi:10.2175/WER.65.5.12

Organic loading effects on the treatment of phenolic wastewaters by sequencing batch reactors

G. F. Nakhla^*, I. M. Al-Harazin, S. Farooq

^*Corresponding author for this work

King Fahd University of Petroleum & Minerals

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

11 Scopus citations

Abstract

The biodegradability of high concentrations of phenol and o-cresol in wastewater and the impact of these toxicants on sludge settleability was investigated. Sequencing batch reactors were utilized to treat phenol and o-cresol aerobically at a hydraulic retention time of 1 day and a solids residence time of 14 days. The reactors achieved greater than 99.5% removal of phenol and o-cresol at toxicant loadings in the ranges of 0.1-0.8 kg phenol/m³·d and 0.1-0.6 kg o-cresol/m³·d. The average 5-day biochemical oxygen demand (BOD₅) and chemical oxygen demand (COD) removal efficiencies were approximately 99% and 94%, respectively. High toxicant loadings were not observed to hinder the biodegradability of other waste constituents, reflected by the effluent BOD₅ being consistently less than 5mg/L, or impair sludge settleability because the effluent total suspended solids (TSS) and sludge volume index (SVI) were consistently approximately 12 mg/L and 80 mL/g, respectively.

Original language	English
Pages (from-to)	686-689
Number of pages	4
Journal	Water Environment Research
Volume	65
Issue number	5
DOIs	https://doi.org/10.2175/WER.65.5.12
State	Published - 1993

ASJC Scopus subject areas

Environmental Chemistry
Ecological Modeling
Water Science and Technology
Waste Management and Disposal
Pollution

UN SDGs

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10.2175/WER.65.5.12

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title = "Organic loading effects on the treatment of phenolic wastewaters by sequencing batch reactors",

abstract = "The biodegradability of high concentrations of phenol and o-cresol in wastewater and the impact of these toxicants on sludge settleability was investigated. Sequencing batch reactors were utilized to treat phenol and o-cresol aerobically at a hydraulic retention time of 1 day and a solids residence time of 14 days. The reactors achieved greater than 99.5% removal of phenol and o-cresol at toxicant loadings in the ranges of 0.1-0.8 kg phenol/m3·d and 0.1-0.6 kg o-cresol/m3·d. The average 5-day biochemical oxygen demand (BOD5) and chemical oxygen demand (COD) removal efficiencies were approximately 99% and 94%, respectively. High toxicant loadings were not observed to hinder the biodegradability of other waste constituents, reflected by the effluent BOD5 being consistently less than 5mg/L, or impair sludge settleability because the effluent total suspended solids (TSS) and sludge volume index (SVI) were consistently approximately 12 mg/L and 80 mL/g, respectively.",

author = "Nakhla, {G. F.} and Al-Harazin, {I. M.} and S. Farooq",

year = "1993",

doi = "10.2175/WER.65.5.12",

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pages = "686--689",

journal = "Water Environment Research",

issn = "1061-4303",

publisher = "Water Environment Federation",

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T1 - Organic loading effects on the treatment of phenolic wastewaters by sequencing batch reactors

AU - Nakhla, G. F.

AU - Al-Harazin, I. M.

AU - Farooq, S.

PY - 1993

Y1 - 1993

N2 - The biodegradability of high concentrations of phenol and o-cresol in wastewater and the impact of these toxicants on sludge settleability was investigated. Sequencing batch reactors were utilized to treat phenol and o-cresol aerobically at a hydraulic retention time of 1 day and a solids residence time of 14 days. The reactors achieved greater than 99.5% removal of phenol and o-cresol at toxicant loadings in the ranges of 0.1-0.8 kg phenol/m3·d and 0.1-0.6 kg o-cresol/m3·d. The average 5-day biochemical oxygen demand (BOD5) and chemical oxygen demand (COD) removal efficiencies were approximately 99% and 94%, respectively. High toxicant loadings were not observed to hinder the biodegradability of other waste constituents, reflected by the effluent BOD5 being consistently less than 5mg/L, or impair sludge settleability because the effluent total suspended solids (TSS) and sludge volume index (SVI) were consistently approximately 12 mg/L and 80 mL/g, respectively.

AB - The biodegradability of high concentrations of phenol and o-cresol in wastewater and the impact of these toxicants on sludge settleability was investigated. Sequencing batch reactors were utilized to treat phenol and o-cresol aerobically at a hydraulic retention time of 1 day and a solids residence time of 14 days. The reactors achieved greater than 99.5% removal of phenol and o-cresol at toxicant loadings in the ranges of 0.1-0.8 kg phenol/m3·d and 0.1-0.6 kg o-cresol/m3·d. The average 5-day biochemical oxygen demand (BOD5) and chemical oxygen demand (COD) removal efficiencies were approximately 99% and 94%, respectively. High toxicant loadings were not observed to hinder the biodegradability of other waste constituents, reflected by the effluent BOD5 being consistently less than 5mg/L, or impair sludge settleability because the effluent total suspended solids (TSS) and sludge volume index (SVI) were consistently approximately 12 mg/L and 80 mL/g, respectively.

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DO - 10.2175/WER.65.5.12

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JO - Water Environment Research

JF - Water Environment Research

IS - 5

ER -

Organic loading effects on the treatment of phenolic wastewaters by sequencing batch reactors

Abstract

ASJC Scopus subject areas

UN SDGs

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