Pre-sedimentation tank effects on water treatment unit operation

Taghizadeh, Mohammad Mehdi

doi:10.6092/issn.2281-4485/7804

Cited by 3 publications

(1 citation statement)

References 8 publications

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“…The deleterious effects of various contaminants are summarized in Table . To remove all of these contaminants from water, several methods have been employed for water purification, classified as chemical processes comprising coagulation, flocculation, chemical oxidation, chemical precipitation, electrochemical oxidation, ion exchange technique, etc., biological processes containing biological nitrogen removal, anaerobic processes, bioaugmentation, biofilters, etc., and physical processes which include adsorption, , distillation, sedimentation, reverse osmosis, filtration, and many more. A brief description of some of these purification methods is given below.…”

Section: Introductionmentioning

confidence: 99%

Cyclodextrin-Based Nanosponges as an Environmentally Sustainable Solution for Water Treatment: A Review

Goyal

Amar

Gulati

et al. 2023

ACS Appl. Nano Mater.

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Over the past few decades, the disposal of various industrial pollutants such as organic dyes, heavy metal ions, pesticides, and phenolic compounds has led to the deterioration of the quality of freshwater; even with the 70% water coverage over the earth, there is meager access to freshwater sources. Against the drawbacks of conventional water purification methods such as sludge production and generation of toxic byproducts, the adsorption process is regarded as an efficient and economical strategy for the treatment of wastewater. Among various available adsorbents, cyclodextrin-based nanosponges have evolved as prominent adsorbents for treating wastewater and are considered a cost-effective option with minimal energy and time requirements. Owing to their porous nature, cone-like structure, cross-linked three-dimensional network, and special architecture of the hydrophilic and hydrophobic moieties wherein the hydrophobic core can form inclusion complexes with pollutants via host−guest interactions while hydrophilic edges interact with pollutants through hydrogen-bonding and electrostatic interactions, they are effective adsorbents for the removal of a variety of pollutants such as heavy metals, organic dyes, phenols, and pesticides. Additionally, the number of active sites in these nanosponges could be enhanced by hybridizing with other adsorbents or by functionalization with magnetic nanoparticles. This review deliberates various water purification methods and underlines the limitations of using other conventional methods over adsorption. The strategies to synthesize β-cyclodextrin-based nanosponges deploying various cross-linkers and their further modifications have been discussed in detail. Finally, the application of these nanosponges for the effective removal of assorted pollutants from wastewater highlighting the adsorption mechanism in certain cases is cogitated.

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Section: Introductionmentioning

confidence: 99%

Cyclodextrin-Based Nanosponges as an Environmentally Sustainable Solution for Water Treatment: A Review

Goyal

Amar

Gulati

et al. 2023

ACS Appl. Nano Mater.

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Exploring the urban water-energy-food nexus under environmental hazards within the Nile

Elagib

Saad²,

Basheer

et al. 2019

Stoch Environ Res Risk Assess

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The integrative approach of water, energy, and food nexus (WEF nexus) is now widely accepted to offer better planning, development, and operation of these resources. This study presents a first attempt towards understanding the WEF nexus of urban environments in the Nile River Basin under conditions of hydrological droughts and fluvial floods. A case study was conducted for the capital of Sudan, Khartoum, at the confluence of the White Nile and the Blue Nile for illustration. The results were based on analyses of river flow and water turbidity data, field observations, a printed questionnaire and an interview of farmers practicing irrigated agriculture, and hydropower modelling. The study analyzes indicators for the association of river water resources environment (intra-annual regime, quantity, and quality), the status of urban irrigated agriculture, water treatment for domestic use, and hydropower generation under hydrological extremes, i.e. droughts and fluvial floods. It additionally examines the consequent interactions between the impacts on three sectors. The present study shows how floods and droughts impose impacts on the seasonal river water quality and quantity and, in turn, on the water treatment for domestic use , irrigated agriculture, and hydro-energy supply in an urban environment.The results demonstrate how the two hydrological phenomena determine the state of hydropower generation from dams, i.e. high energy production during floods and vice versa during droughts.Hydropower dams, in turn, could induce cons in the form of low fertile soils in the downstream due to retaining sediment. Finally, present and potential options to minimize the above risks are discussed.This study is hoped to offer a good support for integrated decision making on increased resource efficiency over the urban environment within the Nile Basin.

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Evaluation of Water Quality and the Efficiency of Ifraz-2 Water treatment plant-Units

Omar

2019

JUOR

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‫گ‬ ‫ۆڤ‬ ‫ار‬ ‫ی‬ ‫زانك‬ ‫ۆی‬ ‫راپ‬ ‫ەڕی‬ ‫ن‬ Abstract:Water treatment plant (WTP) is essential for providing clean and safe water to the habitants. There is a necessity to evaluate the performance of (WTP) for proper treatment of raw water. The purpose of the present study is to evaluate the quality of treated water by investigating the performance of Ifraz-2 (WTP) units located in Erbil City, Iraq. For assessment of the (WTP) units, samples were taken for a duration of five months from different locations: raw water (the source), post-clarification processes, post-filtration processes, and from the storage tank. Removal efficiencies for the units, and for the whole (WTP) were calculated and presented. Obtained removal efficiencies for the sedimentation unit; filtration unit; and the entire Ifraz-2 (WTP) were 91.51 %, 64.71 %, and 97.29 %, respectively. After the process of disinfection and storage, the valued of the turbidity of the treated water were ranged from 1.2 to 9.7 (Nephelometric Turbidity Units) NTU.Besides, water quality index (WQI) for the (WTP) was studied and calculated for 14 physicochemical water quality parameters. WQI for Ifraz-2 (WTP) was 51.87 and it is regarded as a good level. Also, operational problems have been detected and reported during the research period, especially during sedimentation, filtration, and disinfection. Suitable solutions have been reported to the operational team. Journal of University of Raparin‫گ‬ ‫ۆڤ‬ ‫ار‬ ‫ی‬ ‫زانك‬ ‫ۆی‬ ‫راپ‬ ‫ەڕی‬ ‫ن‬ ‫گ‬ ‫ۆڤ‬ ‫ار‬ ‫ی‬ ‫زانك‬ ‫ۆی‬ ‫راپ‬ ‫ەڕی‬ ‫ن‬ ‫گ‬ ‫ۆڤ‬ ‫ار‬ ‫ی‬ ‫زانك‬ ‫ۆی‬ ‫راپ‬ ‫ەڕی‬ ‫ن‬

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Pre-sedimentation tank effects on water treatment unit operation

Cited by 3 publications

References 8 publications

Cyclodextrin-Based Nanosponges as an Environmentally Sustainable Solution for Water Treatment: A Review

Cyclodextrin-Based Nanosponges as an Environmentally Sustainable Solution for Water Treatment: A Review

Exploring the urban water-energy-food nexus under environmental hazards within the Nile

Evaluation of Water Quality and the Efficiency of Ifraz-2 Water treatment plant-Units

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