Thailand
Reduces arsenic and iron levels in the drinking water treatment system for the cities of Herreruela and Carcaboso in the province of Caceres, Spain.
Provided drinking water treatment to Herreruela and Carcaboso in Spain.
Company Name : Herreruela & Carcaboso
Location: Spain
Year : 2001 – 2012
Title : Provided drinking water treatment system to Herreruela and Carcaboso in Spain.
Goal: Reduce arsenic and iron levels in the water.
Capacity : Herreruela 200 cubic meters/day
Carcaboso : 400 cubic meters/day
Water source for treatment: water pipes in tunnels
Problem:
In drinking water, the content of arsenic and steel exceeds drinking water standards.
Technical solutions:
The process of operation is as follows:
- Aeration and oxidation (30-60 min blocking time) by using a diffuser to blow out the VOC and increase the redox chance to >100 mv.
- Max flow into the aeration tank to raise the pH level to 0 – 8.3.
- APF® Flocculant in the aeration tank
- Filter the water with the AFM® glass filter.
- Add chlorine to the water
Result Herreruela :
| Required Value | Before-Treatment | After-Treatment | |
|---|---|---|---|
| Turbidity (NTU) | < 1 | 5 | < 0.5 |
| Arsenic (mcg/L) | < 10 | 45 | < 10 |
| Iron (mg/L) | < 0.2 | 4.48 | < 0.14 |
Before water treatment, iron value = 4,484 iron (mg/L)
After water treatment, iron value = 139 (mg/L)
Result Carcaboso :
| Required Value | Before-Treatment | After-Treatment | |
|---|---|---|---|
| Turbidity (NTU) | < 1 | 5 | < 0.3 |
| Arsenic (mcg/L) | < 10 | 11 | < 3 |
| Iron (mg/L) | < 0.2 | 2.3 | < 0.12 |
Before treatment, arsenic value = 11.0 (mcg/L)
