scholarly journals Predictive model for drinking water treatment technology design – the efficiency of arsenic removal by in-situ formed ferric-hydroxide

2010 ◽  
Vol 54 (1) ◽  
pp. 45 ◽  
Author(s):  
Dóra Laky
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Predictive Model ◽  
Arsenic Removal ◽  
Ferric Hydroxide ◽  
Drinking Water Treatment ◽  
Treatment Technology ◽  
Technology Design ◽  
Water Treatment Technology

scholarly journals Adapting a drinking water treatment technology for arsenic removal to the context of a small, low-income California community

2021 ◽  
Vol 204 ◽  
pp. 117595
Author(s):  
Sara Glade ◽  
Siva RS Bandaru ◽  
Mohit Nahata ◽  
Jay Majmudar ◽  
Ashok Gadgil
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Low Income ◽  
Arsenic Removal ◽  
Drinking Water Treatment ◽  
Treatment Technology ◽  
Water Treatment Technology

scholarly journals COMPARISON BETWEEN TRADITIONAL METHOD AND MORINGA OLEIFERA SEEDS IN DRINKING WATER TREATMENT TECHNOLOGY

2021 ◽  
Vol 07 (02) ◽  
pp. 235-258
Author(s):  
Dalia Hassan Khafagy ◽  
Mohammed Elanwar H. Osman ◽  
Mohamed Ismail El Shahawy ◽  
Saly Farouq Gheda
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Traditional Method ◽  
Moringa Oleifera ◽  
Drinking Water Treatment ◽  
Treatment Technology ◽  
Water Treatment Technology

Survey on full-scale drinking water treatment plants for arsenic removal in Italy

2014 ◽  
Vol 9 (1) ◽  
pp. 42-51 ◽  
Author(s):  
S. Sorlini ◽  
F. Gialdini ◽  
M. C. Collivignarelli
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Arsenic Removal ◽  
Ferric Hydroxide ◽  
Drinking Water Treatment ◽  
Chemical Precipitation ◽  
Ionic Form ◽  
Ionic Exchange ◽  
Water Characteristics ◽  
Water Treatment Plants

Arsenic in drinking water causes severe health effects and it is widely diffused in groundwater around the world. This paper presents the results of a survey about the main arsenic removal technologies employed in Italy and the main features in the management of real treatment plants. 19 drinking water treatment plans were involved in this study. The specific aspects analysed in this survey were: type of technologies applied in the drinking water treatment plants (water characteristics, ionic form of As in raw water, etc.), technical aspects (chemical dosage, treatment steps, hydraulic load, retention time, etc.), operational aspects (backwashing, media regeneration, management of residues, etc.) and costs of these technologies. In Italy, the main technologies employed are chemical precipitation (10 plants) and adsorption with granular ferric hydroxide (GFH) (six plants). Two of these plants employ both chemical precipitation and GFH. Moreover, there are some applications of adsorption on titanium dioxide (two plants), reverse osmosis (two plants) and ionic exchange (two plants).

Efficiency of Removal of Iron, Manganese, Ammonium and Organic Matter from Groundwater

2017 ◽  
Author(s):  
Ramunė Albrektienė ◽  
Mindaugas Rimeika
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Organic Compounds ◽  
Quartz Sand ◽  
Drinking Water Treatment ◽  
Ammonium Ions ◽  
Treatment Technology ◽  
Well Field ◽  
Water Treatment Technology ◽  
Iron Manganese

The acceptable concentrations in groundwater are usually in excess of iron, ammonium and manganese. These compounds are inefficiently removed by means of ordinary technologies of ammonium ions, iron and manganese compounds removal from groundwater (water aeration and filtration through granular filter fillings) where groundwater contains high concentrations of organic compounds. Increased concentrations of organic compounds in groundwater occur in well fields where exploited aquifers have contact with surface water wells and are supplemented with water from open water bodies. Such well field is located in the town of Nida (Lithuania). The norms permitted by Council directive 98/83/EC on the quality of water intended for human consumption are exceeded by iron, ammonium, manganese and organic compounds in this well field. The present study examines the efficiency of drinking water treatment technology of three-stage filtration with aeration and insertion of coagulant (polyaluminum chloride) where ammonium ions, iron, manganese and organic compounds are removed from groundwater in an integral manner. Three fillings were used for filtration: quartz sand, zeolite and quartz sand with oxidizing bacteria. The drinking water treatment technology examined removes ammonium ions, iron, manganese and organic compounds from groundwater in an integral manner until the requirements of the norms of directive 98/83/EC are achieved.

Arsenic removal - experience with the GEH® process in Germany

2002 ◽  
Vol 2 (2) ◽  
pp. 275-280 ◽  
Author(s):  
W. Driehaus
Keyword(s):  
Drinking Water ◽  
Arsenic Removal ◽  
Ferric Hydroxide ◽  
Drinking Water Treatment ◽  
Treatment Results ◽  
Design Data ◽  
Drinking Water Standard ◽  
Water Treatment Plants ◽  
Trade Name ◽  
Granular Ferric Hydroxide

The reduced German drinking water standard for arsenic of 10 μg/L initiated the development of a new adsorbent, the granular ferric hydroxide. It was introduced into the market in 1997 under the trade name GEH®. 16 drinking water treatment plants for arsenic removal are now using this technique in Germany. The article gives a brief overview over this applications, the design data and the treatment results. This technique requires only small contact times between 3 and 10 minutes, whereas the treatment capacities are up to 250,000 bed volumes. The average treatment costs, including media supply, media exchange service and disposal, are 0.04 EURO per m3 treated water.

In situ electrochemical and photo-electrochemical generation of the fenton reagent: A potentially important new water treatment technology

2006 ◽  
Vol 40 (9) ◽  
pp. 1754-1762 ◽  
Author(s):  
J.M. Peralta-Hernández ◽  
Yunny Meas-Vong ◽  
Francisco J. Rodríguez ◽  
Thomas W. Chapman ◽  
Manuel I. Maldonado ◽  
...  
Keyword(s):  
Water Treatment ◽  
Fenton Reagent ◽  
Treatment Technology ◽  
Electrochemical Generation ◽  
Water Treatment Technology

scholarly journals Drinking water treatment by iron anode-based electrocoagulation: humic acids and arsenic removal

2016 ◽  
Author(s):  
A. Pop ◽  
C. Bordianu ◽  
R. Pode ◽  
I. Vlaicu ◽  
N. Lungar ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Humic Acids ◽  
Arsenic Removal ◽  
Drinking Water Treatment ◽  
Iron Anode
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