Calculation Features of Vertical Settling Tanks  for Heavy Metal - Containing Wastewater Treatment:

Varuzhan Shamyan; Armenuhi Minasyan; Marine Kalantaryan

doi:10.54338/27382656-2024.7-03

Authors

Varuzhan Shamyan National University of Architecture and Construction of Armenia https://orcid.org/0000-0002-7692-2234
Armenuhi Minasyan National University of Architecture and Construction of Armenia https://orcid.org/0000-0001-6485-5065
Marine Kalantaryan National University of Architecture and Construction of Armenia https://orcid.org/0000-0001-9228-1978

DOI:

https://doi.org/10.54338/27382656-2024.7-03

Keywords:

salts of heavy metals, neutralization reactions, hydroxide compounds, wastewater, vertical settling tank

Abstract

The article discusses the treatment of wastewater containing heavy metal salts before releasing it into natural water bodies or the urban drainage system. The focus is on environmental protection, human health, and the potential for recovering valuable metals from wastewater. A vertical settling tank was selected for its cost-effectiveness in treating metal-containing acidic wastewater. The article provides a general method for calculating these settling tanks during reagent sedimentation, which can be used to remove various types of heavy metal salts. For this purpose, all calculations related to the use of reagents (their quantities, volumes of reagent storage, solution tanks, and neutralization chambers) were conducted in advance. Additionally, corresponding chemical equations for the reagents and various acids, as well as the equations for the reactions occurring between the reagents and heavy metal salts, were formulated.

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Author Biographies

Varuzhan Shamyan, National University of Architecture and Construction of Armenia

Doctor of Philosophy (PhD) in Engineering (RA, Yerevan) - National University of Architecture and Construction of Armenia, Associate Professor at the Chair of Water Systems, Hydraulic Engineering and Hydropower

Armenuhi Minasyan, National University of Architecture and Construction of Armenia

National University of Architecture and Construction of Armenia, Specialist at the Science Department

Marine Kalantaryan, National University of Architecture and Construction of Armenia

Doctor of Philosophy (Ph.D) in Chemistry (RA,Yerevan) -National University of Architecture and Construction of Armenia, Associate professor at the Chair of Production of Construction Materials, Items and Structures, Head of the Research Laboratory "Construction Chemistry"

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