What should I do if the crystal form of sodium chloride becomes smaller and difficult to centrifuge after continuous use of the MVR device to recover sodium chloride?
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Our company uses an MVR device to treat elemental sewage containing sodium chloride and recover sodium chloride. However, after nearly half a month of continuous operation, it is obvious that the slurry in the system is very thick, with a lot of salt, but the crystal form is very small. The effect of centrifugation with a centrifuge is poor. This makes the slurry in the system always very thick, the water output is seriously reduced, and the processing capacity is severely reduced. It was originally able to process about 100 cubic meters of water per day, but now it can only process 40 cubic meters per day. . .
Is it possible to centrifuge the mother liquor and then put it into MVR? If so, it is caused by the accumulation of impurities.
Can you send me some photos of the scene?
Generally, this situation is related to the accumulation of organic matter in the wastewater. It is recommended that the mother liquor be properly discharged to reduce the COD of the incoming water, and then it needs to stay in the reaction tank for 1-2 hours after discharging. This process is called crystal cultivation in the crystallization industry. After the crystal nuclei are formed and grow naturally, the centrifugation effect will be better.
Hello, what are the organic components in this wastewater? ? ?
What is the concentration of your sodium chloride before entering the MVR device? Before entering the MVR, you can use our company's technology electrodialysis for pretreatment to ease the operation of the MVR. If necessary, you can contact me at 15088793370
Using our company's technology, electrodialysis is easy to operate, requires little space, and can save costs. We help concentrate to 15%-20%