Electrodialysis process or MVR process?
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Tens of tons per day. It contains over 10% sodium chloride and sodium sulfate. There are also a few percent of Ulo products in it. Should it be treated using electrodialysis, or via MVR multi-effect evaporation concentration?
Electrodialysis concentration? I don’t quite understand this. For example, can electrodialysis be used to separate a sodium sulfate solution into sulfuric acid and sodium hydroxide? If not, does that mean strontium sulfate has been removed?
If MVR evaporation is used, the investment cost may be slightly higher; after concentration, the mixed salts are obtained through centrifugation； However, for electrodialysis, the initial investment is relatively low, but due to the high salt content, the costs associated with maintaining stable operation may be higher in the long term.
At a rate of one ton per hour, I’m not sure how much the price and operating costs of these two types of treatment equipment might differ
The investment for MVR might be around 1.8 million more (based on a processing capacity of 50 tons per day), with operating costs of about 40 yuan per ton of water； For electrodialysis, it might be around 1 million, with operating costs of less than 10 yuan (for reference only)
The investment for MVR might be around 1.1 million more (calculated at 1 ton per trial), with operating costs of about 40 yuan per ton of water； For electrodialysis, the cost is probably around 500,000, with operating costs of less than 10 yuan (for reference only)
Mainly, some substances in the wastewater need to be recovered. Or recycle it.
Sodium sulfate, or sodium chloride, at a concentration of over 10 percent. A processing capacity of one ton per hour – should the equipment cost 500,000 or 1 million? What is the product obtained after membrane separation? If dilute acid and alkali washing solution are obtained, they might be reused
Personally, I recommend using MVR evaporation directly; after the material enters the system, it is divided into two parts, one of which is condensate water (with low salt content and suitable for reuse)； The other portion is mixed salts, which are disposed of as solid waste or sent out for treatment at low costs. It can be completely utilized to the fullest, achieving zero emissions and zero pollution.
With electrodialysis, it’s not possible to handle such high salt concentrations. If you’re looking for information on MVR, please send your contact details to my email address: 3225774384@qq.com. We can also provide you with a complete solution for MVR evaporation crystallization
But what is the general cost for mixed salt treatment? Do you know this? Thank you!