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.

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).

scholarly journals Residues from Water Precipitation via Ferric Hydroxide Threaten Soil Fertility

2021 ◽  
Vol 13 (8) ◽  
pp. 4327
Author(s):  
Tomáš Brabenec ◽  
Anna Maroušková ◽  
Tomáš Zoubek ◽  
Martin Filip
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Soil Fertility ◽  
Aluminum Chloride ◽  
Ferric Hydroxide ◽  
Drinking Water Treatment ◽  
Nutrient Cycles ◽  
Water Treatment Plants ◽  
The Moment

From the moment it was first indicated that use of aluminum chloride during purification of drinking water might be one of the triggers of Alzheimer’s disease, it took only a few years to almost abandon this practice worldwide. Now, two years after the initial evidence was presented that the cheapest possible replacement for aluminum chloride (ferric hydroxide, better known as ferrous sludge) significantly threatens soil fertility, there is almost no action. A robust case study was conducted among European drinking water treatment plants. First, it is reported that some samples of ferrous sludge can reduce phosphorus availability by more than 70%. This creates a precondition for a significant reduction in fertility over a decade. Because the legislation usually responds to similar findings with great delay, the extent to which managers of drinking water treatment plants are willing to change process settings by themselves has also been assessed. The findings obtained allow us to expect that a long continuation of this hazardous practice can be expected, since managers of drinking water treatment plants show little willingness to switch from the ongoing questionable technology (harmful to nutrient cycles in soil) to environmentally favorable (though slightly more costly) solutions.

scholarly journals Effects of fulvic acid and ferric hydroxide on removal of Fe2+ and Mn2+ by oxidation and aerated/submerged ultrafiltration membrane system

2017 ◽  
Vol 17 (6) ◽  
pp. 1712-1721
Author(s):  
Turkan Ormanci Acar ◽  
Sevgi Gunes Durak ◽  
Nese Tüfekci
Keyword(s):  
Drinking Water ◽  
Fulvic Acid ◽  
Membrane Surface ◽  
Ferric Hydroxide ◽  
Drinking Water Treatment ◽  
Membrane System ◽  
Water Treatment Plants ◽  
The City ◽  
Kinetics Of

Abstract The purpose of this study is to evaluate the effects of fulvic acid (FA) and ferric hydroxide on the Fe2+ and Mn2+ removal by oxidation and aerated/submerged membrane systems. Firstly, the oxidation kinetics of Fe2+ and Mn2+ in the presence of FA and ferric hydroxide are discussed and then the contribution of the oxidation step in membrane experiments is determined. All experiments are conducted with synthetic drinking water and the concentration of contaminants is determined by characterization of two different drinking water sources in the city of Istanbul: Ömerli Dam Lake and Danamandıra Village groundwater. The addition of ferric hydroxide helps to mitigate fouling and enhances the rejection of Mn2+ by up to 90% by developing a secondary filtration layer on the membrane surface which has been considered a challenge in drinking water treatment plants.

scholarly journals Arsenic removal from drinking water using granular ferric hydroxide

Water SA ◽  
2003 ◽  
Vol 29 (2) ◽  
Author(s):  
O.S. Thirunavukkarasu ◽  
T. Viraraghavan ◽  
K.S. Subramanian
Keyword(s):  
Drinking Water ◽  
Arsenic Removal ◽  
Ferric Hydroxide ◽  
Granular Ferric Hydroxide

Drinking Water Surveillance Program in the St. Clair-Detroit River Area 1985/86

1986 ◽  
Vol 21 (3) ◽  
pp. 447-459 ◽  
Author(s):  
K.J. Roberts ◽  
R.B. Hunsinger ◽  
A.H. Vajdic
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Drinking Water Treatment ◽  
Surveillance Program ◽  
Sampling Protocol ◽  
Detroit River ◽  
Water Treatment Plants

Abstract The Drinking Water Surveillance Program (DWSP), developed by the Ontario Ministry of the Environment, is an assessment project based on standardized analytical and sampling protocol. This program was recently instituted in response to a series of contaminant occurrences in the St. Clair-Detroit River area of Southwestern Ontario. This paper outlines the details and goals of the program and provides information concerning micro-contaminants in drinking water at seven drinking water treatment plants in Southwestern Ontario.

Nuclear Magnetic Resonance Enables Understanding of PolyDiallyldimethyl Ammonium Chloride Composition and N-Nitrosodimethylamine Formation During Chloramination

2021 ◽  
Author(s):  
Samantha Donovan ◽  
Ariel Jasmine Atkinson ◽  
Natalia Fischer ◽  
Amelia E Taylor ◽  
Johann Kieffer ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Drinking Water ◽  
Water Treatment ◽  
Magnetic Resonance ◽  
Ammonium Chloride ◽  
Drinking Water Treatment ◽  
Water Treatment Plants ◽  
Nuclear Magnetic

PolyDiallyldimethyl Ammonium Chloride (PolyDADMAC) is the most commonly used polymer at drinking water treatment plants and has the potential to form nitrosamines, like N-Nitrosodimethylamine (NDMA), if free polymer is present...

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