Treatability of 2,4-D production wastewaters

O. Tunay; S. Erden; D. Orhon; I. Kabdasli

doi:10.2166/wst.1994.0067

Treatability of 2,4-D production wastewaters

O. Tunay^*, S. Erden, D. Orhon, I. Kabdasli

^*Corresponding author for this work

Department of Environmental Engineering

Istanbul Technical University

Research output: Contribution to journal › Conference article › peer-review

5 Citations (Scopus)

Abstract

This study evaluates the characterization and treatability of 2,4-D production wastewaters. Wastewaters contain 20000-40000 mg/l COD, 17000-30000 mg/l chloride and pH is around 1.0. Chemical oxidation with hydrogen peroxide provided almost complete COD removal. The optimum conditions are 3:1 H₂O₂/COD oxidant dosage, 3000 mg/l Fe³⁺ as catalyst and pH 3. Partial oxidation at 0.5:1 H₂O₂/COD ratio is also effective providing 67% COD removal. A batch activated sludge system is used for biological treatability. Dilution is needed to maintain a tolerable chloride concentration which increases through COD removal. pH also increased during COD removal. 85% COD removal is obtained for the 50% dilution at an organic loading of 0.3 day^-1 on a COD basis. Completely and partially oxidized wastewaters are also treated in the activated sludge down to 30 mg/l BOD₅.

Original language	English
Pages (from-to)	73-78
Number of pages	6
Journal	Water Science and Technology
Volume	30
Issue number	3 pt 3
DOIs	https://doi.org/10.2166/wst.1994.0067
Publication status	Published - 1994
Event	Proceedings of the 17th Biennial Conference of the International Association on Water Quality. Part 1 - Budapest, Hung Duration: 24 Jul 1994 → 30 Jul 1994

Keywords

2,4-D biodegradability
Chemical oxidation
Chlorinated hydrocarbon treatment
Inhibition

UN SDGs

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

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10.2166/wst.1994.0067

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title = "Treatability of 2,4-D production wastewaters",

abstract = "This study evaluates the characterization and treatability of 2,4-D production wastewaters. Wastewaters contain 20000-40000 mg/l COD, 17000-30000 mg/l chloride and pH is around 1.0. Chemical oxidation with hydrogen peroxide provided almost complete COD removal. The optimum conditions are 3:1 H2O2/COD oxidant dosage, 3000 mg/l Fe3+ as catalyst and pH 3. Partial oxidation at 0.5:1 H2O2/COD ratio is also effective providing 67% COD removal. A batch activated sludge system is used for biological treatability. Dilution is needed to maintain a tolerable chloride concentration which increases through COD removal. pH also increased during COD removal. 85% COD removal is obtained for the 50% dilution at an organic loading of 0.3 day-1 on a COD basis. Completely and partially oxidized wastewaters are also treated in the activated sludge down to 30 mg/l BOD5.",

keywords = "2,4-D biodegradability, Chemical oxidation, Chlorinated hydrocarbon treatment, Inhibition",

author = "O. Tunay and S. Erden and D. Orhon and I. Kabdasli",

year = "1994",

doi = "10.2166/wst.1994.0067",

language = "English",

volume = "30",

pages = "73--78",

journal = "Water Science and Technology",

issn = "0273-1223",

publisher = "IWA Publishing",

number = "3 pt 3",

note = "Proceedings of the 17th Biennial Conference of the International Association on Water Quality. Part 1 ; Conference date: 24-07-1994 Through 30-07-1994",

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TY - JOUR

T1 - Treatability of 2,4-D production wastewaters

AU - Tunay, O.

AU - Erden, S.

AU - Orhon, D.

AU - Kabdasli, I.

PY - 1994

Y1 - 1994

N2 - This study evaluates the characterization and treatability of 2,4-D production wastewaters. Wastewaters contain 20000-40000 mg/l COD, 17000-30000 mg/l chloride and pH is around 1.0. Chemical oxidation with hydrogen peroxide provided almost complete COD removal. The optimum conditions are 3:1 H2O2/COD oxidant dosage, 3000 mg/l Fe3+ as catalyst and pH 3. Partial oxidation at 0.5:1 H2O2/COD ratio is also effective providing 67% COD removal. A batch activated sludge system is used for biological treatability. Dilution is needed to maintain a tolerable chloride concentration which increases through COD removal. pH also increased during COD removal. 85% COD removal is obtained for the 50% dilution at an organic loading of 0.3 day-1 on a COD basis. Completely and partially oxidized wastewaters are also treated in the activated sludge down to 30 mg/l BOD5.

AB - This study evaluates the characterization and treatability of 2,4-D production wastewaters. Wastewaters contain 20000-40000 mg/l COD, 17000-30000 mg/l chloride and pH is around 1.0. Chemical oxidation with hydrogen peroxide provided almost complete COD removal. The optimum conditions are 3:1 H2O2/COD oxidant dosage, 3000 mg/l Fe3+ as catalyst and pH 3. Partial oxidation at 0.5:1 H2O2/COD ratio is also effective providing 67% COD removal. A batch activated sludge system is used for biological treatability. Dilution is needed to maintain a tolerable chloride concentration which increases through COD removal. pH also increased during COD removal. 85% COD removal is obtained for the 50% dilution at an organic loading of 0.3 day-1 on a COD basis. Completely and partially oxidized wastewaters are also treated in the activated sludge down to 30 mg/l BOD5.

KW - 2,4-D biodegradability

KW - Chemical oxidation

KW - Chlorinated hydrocarbon treatment

KW - Inhibition

UR - http://www.scopus.com/inward/record.url?scp=0028588675&partnerID=8YFLogxK

U2 - 10.2166/wst.1994.0067

DO - 10.2166/wst.1994.0067

M3 - Conference article

AN - SCOPUS:0028588675

SN - 0273-1223

VL - 30

SP - 73

EP - 78

JO - Water Science and Technology

JF - Water Science and Technology

IS - 3 pt 3

T2 - Proceedings of the 17th Biennial Conference of the International Association on Water Quality. Part 1

Y2 - 24 July 1994 through 30 July 1994

ER -

Treatability of 2,4-D production wastewaters

Abstract

Keywords

UN SDGs

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