Introduction
Iron contamination in water sources is a persistent issue in many parts of the world, leading to unpleasant taste, staining, and potential health concerns. Addressing this problem requires efficient filtration solutions, and DMI-65, an advanced catalytic filtration media, has emerged as a leading choice. This case study highlights the effectiveness of DMI-65 media in an iron removal system installed by Anivi Water Treatment, Kochi, and demonstrates its performance through before-and-after water quality analysis.
Project Details
- OEM : Mr. Jobin, Anvi, Kochi, Kerala, India +91 9061546209
- Location : Arch Bishop House, Ernakulam
- Objective : To reduce high iron levels in the raw water supply
- Filtration System: 2472 FRP Vessel 3 stage filtration with MGF, DMI65, ACF
Installation Scenario
At the site, the customer invested ₹10-12 lakhs in digging a borewell to ensure a reliable water source. However, the borewell water was found to contain an alarmingly high 48 ppm of iron, making it unfit for use. Many water filtration companies hesitated to take up the challenge due to the extreme iron concentration. Jobin from Anivi Water Treatment stepped forward and confidently designed a customized filtration system using DMI-65 media. The results were outstanding, with iron levels reduced to 0.08 ppm, and the water was rendered crystal clear, exceeding all expectations.
Raw Water Analysis Data
A water sample was collected and tested before treatment. The analysis revealed the following key parameters:
| Parameter | Unit | Raw Water Value | IS 10500:2012 Permissible Limit |
| Iron (Fe) | mg/L | 48 | 0.3 |
| Turbidity | NTU | 51.40 | 1 |
| pH | – | 5.31 | 6.5 – 8.5 |
| TDS | mg/L | 2588 | 500 |
| Total Hardness | mg/L | 704 | 200 |
| Chloride | mg/L | 934.22 | 250 |
The iron concentration of 48 mg/L is 160 times higher than the permissible limit, making the water unsuitable for consumption and industrial applications without proper treatment
Treated Water Analysis Data
After implementing the DMI-65-based filtration system, a post-treatment water sample was analysed, and the results are as follows:
| Parameter | Unit | Treated Water Value | IS 10500:2012 Permissible Limit |
| Iron (Fe) | mg/L | 0.08 | 0.3 |
| Turbidity | NTU | 0.2 | 1 |
| pH | – | 5.64 | 6.5 – 8.5 |
| TDS | mg/L | 2578 | 500 |
| Total Hardness | mg/L | 705 | 200 |
| Chloride | mg/L | 932.80 | 250 |
Reduction in iron (Fe): 48 ppm to 0.08 ppm
Reduction in turbidity: 51 NTU to 0.2 NTU
Results & Efficiency
The DMI-65 media effectively reduced iron levels from 48 mg/L to 0.08 mg/L, achieving a 99.83% removal efficiency. This demonstrates the media’s superior performance in oxidizing and filtering dissolved iron, rendering the water fit for consumption and industrial usage. Additionally:
- Turbidity reduced from 51.40 NTU to 0.2 NTU, improving clarity.
- The treated water met the BIS permissible limit for iron content (<0.3 mg/L).
*Pictures of Installation, raw water and treated water
Key Benefits of DMI-65:
- High Iron and Manganese Removal Efficiency: possible to bring down to BDL
- Long Media Life: Up to 7–10 years of operational lifespan.
- Compatible with Chlorine & Oxidants: Works effectively with chlorine dosing, enhancing oxidation.
- Fast Reaction Time: Requires shorter filtration cycles compared to conventional media.
- WQA, CSIR, NSF/ANSI 61 Certified: Ensures safety and suitability for drinking water applications.
For industries, municipalities, and households dealing with excessive iron content, DMI-65 media provides a cost-effective, reliable, and long-term solution to ensure water purity.
