Results 11 to 20 of about 18,853,489 (341)

Integrated Assessment and Geostatistical Evaluation of Groundwater Quality through Water Quality Indices

Water, 2023
This study undertook an assessment of 24 physiochemical parameters at over 1094 sites to compute the water quality index (WQI) across the upper and central Punjab regions of Pakistan.
Iram Naz, Ijaz Ahmad, Rana Waqar Aslam, Abdul Quddoos, Andaleeb Yaseen   +4 more
semanticscholar   +1 more source

Evaluation of Dissolved Organic Matter Removal Characteristics in GAC Adsorption Process in Drinking Water Treatment Process using LC-OCD-OND

대한환경공학회지, 2020
Objectives In this study, we used liquid chromatograph-organic carbon detector-organic nitrogen detector (LC-OCD-OND) to evaluate adsorption and breakthrough characteristics of NOM fractions (biopolymers (BP), humic substances (HS), building blocks (BB)
Heejong Son, Hoon-Sik Yoom, Chang-Dong Seo, Sang-Goo Kim, Yong-Soon Kim   +4 more
doaj   +1 more source

Evaluation and Prediction of Removal Efficiency of Pharmaceuticals in the Simulated O3 and UV/H2O2 Process for Drinking Water Treatment Process in the Downstream of Nakdong River

대한환경공학회지, 2021
Objectives:In the case of pharmaceuticals with high possibility of inflow into the large drinking water treatment plant (DWTP) located in the downstream of the Nakdong River, we tried to evaluate the removal efficiency of pharmaceuticals in the both ...
Chang-Dong Seo, Woorim Lee, Hoon-Sik Yoom, Sangki Choi, Yunho Lee, Heejong Son   +5 more
doaj   +1 more source

Application of the Weighted Arithmetic Water Quality Index in Assessing Groundwater Quality: A Case Study of the South Gujarat Region

Water, 2023
Groundwater is a natural resource used for drinking, agriculture, and industry, apart from surface water. Its quality should be assessed regularly, and the condition of water resources should be maintained accordingly.
Divya D. Patel, Darshan J. Mehta, H. Azamathulla, M. M. Shaikh, Shivendra Jha, U. Rathnayake   +5 more
semanticscholar   +1 more source

Effect of Hydrogen Peroxide and Phosphate Addition on Biopolymers Formation and Changes in Head Loss in Biological Activated Carbon Process

대한환경공학회지, 2020
Objectives:The purpose of this study was to suggest a more efficient operation condition for the BAC(biological activated carbon) process by evaluating the change in the concentration of biopolymers in the effluent of the BAC process and the head loss of
Heejong Son, Eun-Young Jung, Hee-Young Kim, Sang-Goo Kim   +3 more
doaj   +1 more source

Adapted Water Quality Indices: Limitations and Potential for Water Quality Monitoring in Africa

Water, 2023
A Water Quality Index (WQI) is a tool that describes the overall water quality by combining complex and technical water quality information into a single meaningful unitless numerical value.
D. K. Lukhabi, P. K. Mensah, N. Asare, Tchaka Pulumuka-Kamanga, K. Ouma   +4 more
semanticscholar   +1 more source

Assessment of Surface Water Quality Using Water Quality Index and Discriminant Analysis Method

Water, 2023
Given the complexity of water quality data sets, water resources pose a significant problem for global public order in terms of water quality protection and management.
Asma Mammeri, Ammar Tiri, Lazhar Belkhiri, H. Salhi, Djouhaina Brella, Elhadj Lakouas, H. Tahraoui, A. Amrane, Lotfi Mouni   +8 more
semanticscholar   +1 more source

Application of Enhanced BAC Process for Improving Drinking Water Treatment Efficiency

대한환경공학회지, 2020
Objectives: In this study, we compared the properties of the attached biofilm with the ability to remove biodegradable dissolved organic carbon (BDOC) in the conventional BAC (biologically activated carbon) process and the enhanced BAC process with ...
Heejong Son, Eun-Young Jung, Hoon-Sik Yoom, Sang-Goo Kim, Sung Kyu Maeng   +4 more
doaj   +1 more source

Effect of Phosphate and Hydrogen Peroxide on Bacterial Community and Removal Efficiency of Biological Activated Carbon (BAC) Process for Enhanced Biofiltration

대한환경공학회지, 2021
Objectives:The correlation between the organic material removal ability of the enhanced BAC process injected by the phosphate (PO4-P) and/or hydrogen peroxide (H2O2) and attached bacterial community was evaluated.
Eun-Young Jung, Byungryul An, Heejong Son   +2 more
doaj   +1 more source

Two years after legalization: implementing the Cannabis Cultivation Policy in southern coastal California

California Fish and Wildlife Journal, 2020
During the first two years of legal recreational cannabis cultivation in California, the State Water Resources Control Board’s Cannabis Cultivation Program enrolled 4,391 cultivators into the Cannabis General Order.
Brian M. Covellone, Celia S. Pazos, Eric T. Lindberg, Pamela Ybarra, Maher A. Zaher   +4 more
doaj   +1 more source