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202321

Treatability of Metal Finishing Wastewater in Alexandria

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Last updated: 22 Jan 2023

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Abstract

Metal finishing wastes discharged to sewers may be harmful to sewer structure and toxic to treatment plant organisms. This study aims to study the characteristics and treatability of wastes representing the different types of metal finishing in Alexandria. Ten samples from each of the studied three metal finishing types have been collected over one year. The samples were subjected to complete physical and chemical analysis. Two treatment approaches were applied: precipitation and adsorption. The results of analysis indicated that the wastewater effluent violate the decree 44/2000. pH, conductivity, dissolved solids, total phosphate, and some heavy metals are examples of the parameters violated the decree limits. The results of the precipitation treatment using different doses of lime indicated that with increasing in pH, the reduction of all the measured parameters increased. pH of 9.5 [8.5 in case of anodizing waste] have given the best reduction of all the measured parameters and became complied with the decree limits. The results of activated carbon adsorption treatment in pH range from 4.5 to 7.5 indicated that adsorption efficiency increased with pH increasing. pH of 7.5 has been shown the best reduction of all the measured parameters and were complied with the decree limits. The study ended by some recommendations which can be followed to protect both the public health and the sewerage system from the effects of this kind of waste.

DOI

10.21608/jhiph.2002.202321

Keywords

Metal Finishing, Wastewater, alexandria

Authors

First Name

Magda

Last Name

Mohamed

MiddleName

M.

Affiliation

Department of Environmental Health, High Institute of Public Health, Alexandria University, Egypt

Email

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City

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Orcid

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First Name

Olfat

Last Name

EL-Sebaie

MiddleName

D.

Affiliation

Department of Environmental Health, High Institute of Public Health, Alexandria University, Egypt

Email

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City

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Orcid

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First Name

Mamduh

Last Name

EL-Messiery

MiddleName

-

Affiliation

Department of Environmental Health, High Institute of Public Health, Alexandria University, Egypt

Email

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City

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Orcid

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First Name

Mohamed

Last Name

Ramadan

MiddleName

H.

Affiliation

Department of Environmental Health, High Institute of Public Health, Alexandria University, Egypt

Email

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City

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Orcid

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Volume

32

Article Issue

4

Related Issue

27972

Issue Date

2002-10-01

Receive Date

2021-10-31

Publish Date

2002-10-01

Page Start

703

Page End

714

Print ISSN

2357-0601

Online ISSN

2357-061X

Link

https://jhiphalexu.journals.ekb.eg/article_202321.html

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https://jhiphalexu.journals.ekb.eg/service?article_code=202321

Order

3

Type

Original Article

Type Code

511

Publication Type

Journal

Publication Title

Journal of High Institute of Public Health

Publication Link

https://jhiphalexu.journals.ekb.eg/

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Article

Created At

22 Jan 2023