Supply of drinking watertreatment system to the cities of Herreruela and Carcaboso in Spain
Company : Herreruela & Carcaboso
Location : Spain
Year : 2011-2012
Description : Supply of drinking water treatment system to the cities of Herreruela and Carcaboso in the province of Caceres, Spain
Goal : Reduce arsenic and iron levels
Capacity : Herreruela: 200 m3/day
Carcaboso : 400 m3/day
Water Source : Tube wells
The Problems :
- The drinking water contained high levels of Arsenic and Iron above drinking water limits standards.
Technical Solution :
The following processes were carried out:
- Aeration and Oxidation (detention time of 30-60 minutes) using air diffusers in order to blow off VOC’s and raise the redox potential to >100 mv.
- MagpHlow dozing into the aeration tank in order to raise pH levels to 8.0-8.3.
- Coagulant dozing of APF® into the aeration tank.
- AFM® filtration.
- Chlorine dozing.
Results : Herreruela
Before Treatment: Iron = 4484 ug/l
After Treatment: Iron = 139 ug/l
Results : Carcaboso
Before Treatment: Arsenic = 11.0 ug/l
After Treatment: Arsenic = <3 ug/l