Issues related to the recycling of first-stage concentrated water from secondary reverse osmosis and softened water/reclaimed water
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1. The existing plant is considering adding a water softening system, but the wastewater generated by this system cannot be discharged into the sewage treatment plant. What kind of treatment is required? What are the costs involved? Is it expensive to use large amounts of salt and then recover it? Softened water is mainly used for reverse osmosis water supply. 2. If the softened water solution cannot be implemented, well water will be used for reverse osmosis water supply, and then the first-stage concentrate from the second-stage reverse osmosis process will be treated; pilot test results show that the hardness of this water is higher than that of softened water. 3. Which of these two solutions is more reliable and cost-effective in operation?
We also ruled it out directly; it’s a pity
Previously, it was also simply left untreated; considering long-term development, the company has now decided to deal with this water issue, but no good solution has been found yet. :L
:L:L:L We still haven’t recovered the water from our first-stage reverse osmosis process:Q:Q:Q:Q
I recently learned that electrodialysis or electroadsorption techniques can be used to treat this water.
Personally, I think the second option is a bit simpler
Electrodialysis is a good option; although its efficiency is not as high as that of reverse osmosis, it has low costs and should be suitable for treating the concentrated water from secondary reverse osmosis processes
If the amount of softened reclaimed water is not large, it can be mixed with domestic wastewater and discharged to the sewage treatment plant without the need to add salt.
Our company can provide a reverse osmosis concentrate recovery system with an operating pressure of 7 kilograms; it is connected to the concentrate discharge outlet, has an operating cost of 0.1 yuan, and is capable of recovering no less than 50% of the water. Friends who are interested can contact me at 13808987639
Thick wastewater is easier to treat, and the costs involved are relatively low