Can advanced seawater desalination technologies be applied to wastewater treatment?
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I would like to ask whether advanced seawater desalination technologies can be applied to wastewater treatment. Currently, wastewater still contains some sodium chloride; if biochemical treatment is used, the salt content is too high. Diluting the wastewater before discharge results in high costs, and as I learned earlier, the cost of multi-effect evaporation for treating water is around 30–40 yuan per unit volume. I recently saw that the cost of evaporation for seawater desalination is only 5 yuan per unit volume. If this technology could be used for wastewater evaporation, it would enable significant savings in environmental treatment costs. I’m not sure what requirements such technology has regarding wastewater. I hope those who are familiar with this technology can share their knowledge with me. Alternatively, we could also work together. Thank you
If it’s only about dealing with salt content, that’s possible, but the treatment of ammonia nitrogen and COD in wastewater is completely different from that in seawater desalination
It should be possible; currently, a large number of membrane technologies are already being used in wastewater treatment. Such as ultrafiltration, MBR and other technologies
Seawater evaporation does not occur to complete exhaustion, so the costs mentioned above are unreasonable.
With MBR, due to the overly complex composition of wastewater, it is difficult for the membrane’s lifespan to meet economic requirements
Seawater treatment primarily relies on membrane technology, whereas industrial wastewater and organic wastewater have components that are much more complex than those in seawater; it cannot be simply assumed that seawater treatment techniques can be used to treat such wastewater. Membrane technology is merely a processing unit that is widely used in wastewater treatment, such as for the recovery and pretreatment of active substances in pharmaceutical wastewater, as well as in the final treatment of organic wastewater. As for which technology is the best, it is necessary to consider not only the objectives of the process but also an economic evaluation. Personal opinion, for reference only
I feel that biofilm technology is more similar to fluidized beds; it’s different from the concept of membranes used in reverse osmosis. I’m not sure if everyone agrees with this view ? ?
The application of reverse osmosis membranes is relatively widespread in wastewater treatment: victory: :victory: