Are there any methods for treating the mother liquor after wet flue gas desulfurization filtrate + three-effect evaporation/MVR?
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Are there any methods for treating the mother liquor after wet flue gas desulfurization filtrate + three-effect evaporation/MVR? How to treat the mother liquor after magnesium-based desulfurization + MVR? Is there a good way?
Are you asking how to use MVR evaporation for the wastewater resulting from magnesium-based desulfurization, or how to treat the mother liquor produced after using MVR evaporation on the desulfurization wastewater? If MVR is used directly after desulfurization, the evaporator will be unable to operate after at most 2 days; oxidation treatment must be carried out before feeding it into the MVR.
We directly feed the desulfurization filtrate into the evaporator, and then send it to the filter press to produce waste salt
I would like to ask: What is the method for dealing with the mother liquor that cannot be processed after going through the three-effect distillation process or MVR and subsequent centrifugation?
Your process is: desulfurization tower -- discharge pump -- evaporation tank -- pump -- plate and frame filter. In that case, the sludge and salt end up mixed together. So what should be done with that sludge and waste salt? What about the liquid that results from plate and frame filtration? If it is sent back to the absorption tower, there could be problems with long-term operation. Do you have any better solutions?
I’m not in charge of wastewater treatment. The slurry from our desulfurization towers goes through vacuum belt filtration; the filtrate is then sent to the evaporation unit in the wastewater treatment plant, where it’s concentrated. The resulting concentrate is returned to the desulfurization wastewater tank, where it waits for new filtrate to arrive so that it can be mixed again. There’s no mixing of salt sludge involved
Evaporate it directly; otherwise, there’s no way to handle it
The mother liquor can be directly dried using a dryer, with the solidified substance being evaporated; this is a process of reducing volume through drying, eliminating the need to return it to the previous stage and thus ensuring stable operation of the system.
Mother liquors with high salt and high COD can be directly dried using a dryer, with the solidified substance being evaporated away, resulting in extremely low energy consumption.
What kind of dryer can achieve this effect?