Which strong acid is used in the concentration technology for industrial saline wastewater?
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Is low-temperature multi-effect distillation a good option for the concentration of industrial saline wastewater? Should we still use reverse osmosis technology? Especially for desulfurization wastewater from power plants
Firstly, this depends on the salt content in the water. When the salt content is ≤40,000, it is more economical and feasible to use an RO reverse osmosis membrane for concentration followed by evaporation. However, when the salt content is too high, the membrane system cannot handle it, so evaporation is still necessary for treatment. If the water contains organic substances, proper pre-treatment before the evaporation equipment is essential. The cost of cleaning the evaporation equipment is very high. I’ve seen a vacuum drying system that provides relatively good results, but its processing capacity is limited; it is suitable for treating wastewater with high COD levels, high salt content, and high viscosity in small quantities. If you’re interested, feel free to leave your contact information so we can discuss this further
If there is plenty of steam, use multiple effect~~~