Before water is used in the manufacturing process, it needs to be treated to ensure safety and quality. Especially for boiler feed water, the treatment process is extremely important to ensure boiler performance and ensure safety for users.
1. Water Filter:
Mechanical Filtration: Uses types of filtration such as membrane filters, mud filters and fan filters to remove particles and impurities.
Reverse Osmosis Filter: Apply a filter membrane to prevent dissolved substances from passing through.
Activated Sludge Filtration: Uses activated sludge from sources such as coal to remove organic and dissolved substances.
Chemicals: Use disinfectants such as chlorine or ozone to kill harmful organisms.
UV rays: Expose water to UV rays to kill bacteria and viruses.
Sterilization Temperature: Use high temperature to kill microorganisms.
3. Adjust pH:
The recommended ideal pH is between 8.5 and 9.5, and adjustment can be made with pH control agents such as sodium hydroxide or sodium carbonate.
4. Ion Removal:
Ion Exchange: Uses resin beads to replace harmful ions in water with non-harmful ions.
High Pressure: Apply membrane filtration and high pressure to remove ions.
5. Adjust Hardness:
Water hardness is usually adjusted from 50 – 400 ppm to ensure it is not too soft (causing corrosion) or too hard (causing sediment accumulation).
6. Alum Eliminator:
When water hardness is high, alum removers are used to prevent problems such as corrosion and scale build-up, while safety regulations are required.
7. Check Water Quality:
Finally, test the water quality to ensure that it meets standards and is safe for the boiler.
Note that the water treatment process may need to be adjusted depending on the input water conditions and the specific requirements of the boiler.