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Water Quality Index and Life Cycle Assessment of Al-Hashimiyah Water Treatment Plant

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Abulameer M. , Al-Khalaf S. K. H. , Naje A. S.

tom Vol. 25, iss. 3

297--310

Drinking water treatment reduces or eliminates certain health risks and ensures appropriate water quality by removing physical, chemical, and biological pollutants. The treatment process’s increased need for energy, chemicals, and technological inputs raises the expense of producing water as well as its secondary environmental effects. The goal of this research is to use the water quality index (WQI) and life cycle assessment (LCA) to determine and assess the environmental effects of the Al-Hashimiyah water treatment plant (WTP) in Babylon City, Iraq. The water quality index was employed as a criterion for categorizing and treating water in accordance with fundamental water characterization variables using a weighted arithmetic index technique. The LCA was supported by the EcoIndicator 99 database and SimaPro 7.0 software. What makes this study unusual is the identification of two extra functional units related to decontamination, beyond the usual one cubic meter treated water. Samples of treated and raw water were gathered during a 25-month period, from March 2022 to March 2023, and were regularly tested. The results demonstrated that all chemical and physical characteristics (for both raw and processed water) met Iraqi criteria, with the exception of total suspended particles and electrical conductivity. According to LCA studies, certain environmental consequences grow as pollutant concentrations drop. Due to this, a more thorough analysis of the environmental performance of water treatment facilities is now required.

The Effect of Bentonite Utilization as a Chemical Coagulant on the Performance of a Water Treatment Plant

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Al-Khalaf S. K. H. , Sabbar H. A. , Al-Husseiny R. A. , Naje A. S.

Ecological Engineering & Environmental Technology

2023

tom Vol. 24, iss. 3

249--257

In order to use alum in large numbers for the treatment of low turbidity water, a novel method has been used to treat low turbidity water using bentonite with a reduced amount of alum. Given that bentonite has a negative charge, it is added to the raw water to give the blocks weight. The weight is then added by joining the blocks together to create massive blocks that settle more quickly. In addition to providing a large surface for organic compound adsorption, it increases the suspension’s weight and particle density. There are between 10 and 50 mg/l of bentonite clay utilized.In the Karbala water treatment plant, the effectiveness of the water quality index (WQI) at turbidity 20NTU (national turbidity unit) using alum alone was subpar (71.16%). Under the same circumstances, the pilot plant’s WQI efficiency was equally low (72%). The turbidity of the water was increased to 120 NTUwhen bentonite was used in the pilot plant, increasing the efficiency of WQI to 97.2%. When bentonite was added to the water, the turbidity was increased to 200 NTU and the WQI efficiency was increased to 98.9%. The usage of bentonite produced a high level of WQI efficiency and a cheap substance free from infections or negative effects.