A comprehensive study on evaluating the efficacy of natural coagulants and sand bed filtration in removing pollutants from surface water quality
Date
2024-09-30
Journal Title
Journal ISSN
Volume Title
Publisher
Department of Civil and Environmental Engineering(CEE), Islamic University of Technology(IUT), Board Bazar, Gazipur-1704, Bangladesh
Abstract
In the quest for sustainable water treatment methods, this comprehensive study evaluates the
efficacy of natural coagulants and sand bed filtration in removing pollutants from surface
water. The environmental hazards associated with synthetic coagulants have prompted the
investigation into natural alternatives. This research focused on the coagulation efficiency of
Moringa oleifera seeds, cactus opuntia, and chitosan due to their abundant availability and
biodegradability.
Experiments were conducted to compare the turbidity, total dissolved solids (TDS), chemical
oxygen demand (COD), and microbial contamination levels before and after applying these
natural coagulants. Subsequently, sand bed filtration was employed as a secondary treatment
to further purify the water. The study's findings indicate that certain natural coagulants
significantly reduce turbidity and COD levels, with a notable decrease in TDS and microbial
counts.
Moreover, when combined with sand bed filtration, these coagulants demonstrated a
synergistic effect, leading to an even greater reduction in pollutants. The results suggest that
the integration of natural coagulants with sand bed filtration could serve as an effective and
environmentally friendly approach to improving surface water quality. This method holds
promise for application in regions lacking access to advanced water treatment facilities,
providing a cost-effective and accessible solution for clean water
Description
Supervised by
Mr. Md. Habibur Rahman Bejoy Khan,
Assistant Professor,
Department of Civil and Environmental Engineering(CEE),
Islamic University of Technology(IUT),
Board Bazar, Gazipur-1704, Bangladesh.
This thesis is submitted in partial fulfillment of the requirements for the degree of Bachelor of Civil and Environmental Engineering, 2024
Keywords
Sustainable water treatment, natural coagulants, sand bed filtration, surface water quality, pollutants removal, Moringa oleifera, cactus opuntia, chitosan, turbidity, total dissolved solids (TDS), chemical oxygen demand (COD), microbial contamination, biodegradability, synergistic effect
Citation
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