Boiler water treatment process
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The boiler water in our plant contains high levels of suspended solids and high hardness; are there any proven methods or techniques that can help meet the standards for boiler water?
From what you say, if the pressure in your factory’s boilers isn’t high, installing a soft water treatment system will be sufficient.!:lol
In principle, a mechanical filter should be added, followed by a deaerator, and then an ion exchange bed. Does anyone have the specific plan? Suspended solids: 200 mg/l, hardness: around 50 mg/l.
Is the 2nd floor Iron Hero’s? :lol Back to the first post: In our factory, the raw water goes through a multi-media filter ----- ultrafiltration ----- reverse osmosis ----- mixed bed ----- deaerator ----- boiler. The last edit of this post was made by johncom on 2009-3-7 at 20:36.]
If the turbidity is high, a high-efficiency fiber filter can be considered for treatment.
When the turbidity is high, a multi-media filter should be used; if the requirements are not strict, ion exchange can be employed to soften the water. For higher standards, reverse osmosis and mixed-bed treatment processes should be used.
Using filtration for SS200 comes at too high a cost; I suggest that flocculation sedimentation + ultrafiltration + ion exchange + deoxygenation is sufficient
I’m not sure what boiler water standards you are aiming to meet? If it is water for low-pressure boilers, it is sufficient to use an ion exchanger to convert tap water into soft water, and then feed it to the boiler via a deaerator; the water hardness should be 0.03 mg/L ； For water used in medium-pressure boilers, our factory adopts a process that involves tap water entering the system, passing through a multi-media filter, an activated carbon filter, a safety filter, an reverse osmosis membrane unit, a carbon remover, and a mixed-bed reactor. Ammonia is added before the deaerator to adjust the pH value to between 8.8 and 9.2. Quality of the treated water: Hardness: ≤2.0μmol/L; Conductivity: ≤20μs/cm ； If it is for high-pressure boiler water, the treatment requirements are even higher.
When the hardness of water is greater than its alkalinity, how can the amount of hardness that leaks out after treatment with a weakly basic cation exchange resin be calculated? What formula can be used for this purpose? Thank you!