Results 31 to 40 of about 2,255,747 (303)

Characteristics and Impact of VOCs on Ozone Formation Potential in a Petrochemical Industrial Area, Thailand

open access: yesAtmosphere, 2022
In this study, the ambient concentrations of volatile organic compounds (VOCs) were intensively measured from January 2012 to December 2016 using an evacuated canister and were analyzed using a gas chromatography/mass spectrophotometer (GC/MS) based on ...
Nattaporn Pinthong   +3 more
doaj   +1 more source

Hydraulic characteristics of the airlift pump [PDF]

open access: yesActa Scientiarum Polonorum. Formatio Circumiectus, 2018
Airlift pumps are the simplest devices used for lifting and transporting of liquid in water and wastewater systems. They constitute the subject of interest in numerous studies, focusing on their two-phase flow.
Sebastian Kujawiak   +2 more
doaj   +1 more source

Assessment of extraneous water inflow in separate sewerage system by different quantitative methods

open access: yesApplied Water Science, 2022
Extraneous water that inflow to the sewage system is basically divided into two streams—accidental water (mainly rainwater) and infiltration water. The aim of the research was to assess the amount of extraneous water inflow to the considered system. Five
Bartosz Bogusławski   +2 more
doaj   +1 more source

Trihalomethane evaluation in chlorinated treated drinking water sources in Saudi Arabia (Aseer region a case study)

open access: yesAlexandria Engineering Journal, 2022
This study was conducted to assess trihalomethane levels in Aseer region's main chlorinated treated drinking water sources over four consecutive seasons (Summer, Autumn, Winter, and Spring) and to gain a better understanding of trihalomethane occurrence,
Ahmed M. Mujathel   +3 more
doaj  

Sanitation and sanitary engineering [PDF]

open access: yesJournal of the Franklin Institute, 1909
n ...
openaire   +2 more sources

Evaluation of water consumption in rapid sand filters backwashed under varied physical conditions

open access: yesAlexandria Engineering Journal, 2023
Egypt suffers from water scarcity. In water treatment plants using sand filters, a significant amount of treated water is consumed, estimated at 10%–15% of the filtered water during backwashing.
Sara Beshr   +3 more
doaj  

Adsorption of Phenol onto Aluminum Oxide Nanoparticles: Performance Evaluation, Mechanism Exploration, and Principal Component Analysis (PCA) of Thermodynamics

open access: yesAdsorption Science & Technology, 2022
The removal of phenolic compounds from aqueous solutions using novel adsorption techniques becomes a key research item. Of those, nanoparticles in particular, the low-cost and the high-strength aluminum oxide nanoparticles showed promising results in ...
Safwat M. Safwat   +3 more
doaj   +1 more source

The effects of modification for contact stabilization activated sludge on EBPR

open access: yesHBRC Journal, 2015
Excessive phosphorus can cause eutrophication in water bodies and needs to be reduced in most wastewaters before being discharged into receiving waters.
Hamdy I. Ali   +4 more
doaj   +1 more source

Effect of coupling primary sedimentation tank (PST) and microscreen (MS) to remove particulate organic carbon (POC): a study to mitigate energy demand in municipal wastewater treatment plants

open access: yesSustainable Environment Research, 2023
Particulate Chemical Oxygen Demand (COD) removal is one of the first and foremost steps in a wastewater treatment plant (WWTP). It is a highly essential step that supports subsequent biological steps to achieve discharge limits.
Behnam Askari Lasaki   +2 more
doaj   +1 more source

Enhancing Phenol Conversion Rates in Saline Anaerobic Membrane Bioreactor Using Acetate and Butyrate as Additional Carbon and Energy Sources

open access: yesFrontiers in Microbiology, 2020
Phenolic industrial wastewater, such as those from coal gasification, are considered a challenge for conventional anaerobic wastewater treatment systems because of its extreme characteristics such as presence of recalcitrant compounds, high toxicity, and
Víctor S. García Rea   +7 more
doaj   +1 more source

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