The secondary brine has a high magnesium content
Thread Content
This post was last edited by sunjl1981 on 2013-1-6 at 20:31. ICP analysis of the resin tower showed that the saltwater contained high levels of magnesium (and calcium)
There are problems with the ICP analysis instrument; the quality of the raw salt is poor, with severe inversion of calcium and magnesium levels. The pre-treatment process does not work well, and the pressure-induced gasification process is ineffective
There are issues with the ICP analysis instrument; the quality of the raw salt is poor, with severe inversion of calcium and magnesium levels. The pre-treatment process does not work well, and the pressure-based gasification process is ineffective as well. After comparison with instruments from other manufacturers, the ICP instrument itself appears to be fine. Strict controls are in place regarding the quality of the raw salt entering the facility, and the quality of the raw salt itself is acceptable. The equipment used is Dow’s clarification tank, not Kai Membrane’s. After analyzing the reasons for some time, it is suspected that mg(OH)2 is the cause; I would appreciate it if colleagues could share their insights
1. First, check whether the brine coming from the saltwater source is of acceptable quality. 2. Next, examine the impact of the pH level of the brine on the resin. 3. Check the flow rate and temperature of the brine. 4. Assess the effect of regeneration on the performance of the chelating resin
1. First, check whether the saltwater coming from the saline source meets the required standards. 2. Next, examine the impact of the pH level of the saltwater on the performance of the resin. 3. Check the flow rate and temperature of the saltwater. 4. Assess the effect of regeneration on the properties of the chelating resin. Using titration analysis on D-150, no calcium was detected; the magnesium level was around 2, which is within acceptable limits. ICP analysis showed a calcium level of around 1000 PPB and a magnesium level of 200–300 PPB, which is also within acceptable limits. The pH level of the saltwater measured using D-150 was around 10.5, with only slight variations. The flow rate of the saltwater has always been similar, and the temperature of the saltwater is maintained at 62 degrees. After acid-base regeneration over a period of time, a peak can be identified using a parabolic curve
There was a problem with the pure water used in the ICP analyzer; tests conducted with mineral water by our company showed that it was not up to standard, but results were satisfactory when pure water was used instead. . . . . . . . . . . . . . . . . .
6# mm_bar2001 So you mean it is actually qualified, but there’s an issue with the analysis? But now the slot voltage has increased, which indicates that it is actually unqualified