Point of addition of barium chloride in the process of removing sulfate ions using the diaphragm method
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This post was last edited by sunjl1981 on 2013-1-6 at 20:11. It is not clear whether it is feasible to add barium chloride at the baffle in the salt dissolution tank during the process of removing sulfate ions using the diaphragm method; in practice, adding just a small amount of barium chloride solution to the reaction tank causes the solution in the clarification tank to become turbid again. # ， ， &
Barium chloride must have a separate clarification tank; it cannot be used together with the clarification tank for calcium and magnesium in demineralized water. This also facilitates the recovery of barium sulfate
Barium sulfate is a crystalline precipitate; if it is added to the baffled tank after salt dissolution, it is acceptable if it goes into a clarification tank or a pre-treater. However, if it is fed into a filter, it will increase the load on the filter, causing the pressure to rise rapidly, which often leads to backwashing
After salt dissolution, it enters the reaction tank; the excess of the two alkalis in the baffle tank after salt dissolution should also be affected
Barium sulfate is a precipitate formed from strong acids and strong bases; ordinary acids and bases have little effect on it. Generally, diaphragms do not remove sulfate ions; if removal is necessary, there should be better approaches to achieve it.