Year1
- 粒度：
- 0.3-1.2
- 湿度：
- 47%
- 交换容量：
- 2.0meq/mL
Nickel Removal and Recovery Example Guide is a macroporous selective chelating ion exchange resin with iminodiacetic acid functional groups and a very durable type. The application is particularly suitable for the removal of cationic heavy metals. The macroporous resin structure ensures superior ion diffusion, thereby giving efficient complete removal and regeneration performance. This resin can remove metals from water with low water content and is the most cost-effective method. Adjust to an appropriate range to remove metals, but must be maintained below to prevent the formation of metal oxides and hydroxide precipitation. This resin has a higher affinity for nickel and the selectivity sequence is shown below Recommended Operating Conditions for Nickel Removal Recovery The operating conditions below are general guidelines for use. Regeneration conditions and flow rates should be selected based on the specific application. Temperature ℃ above resin bed height (at least above for higher feed to achieve better water quality requirements)
Working flow rate
Raw regenerant concentration
The following regeneration performance is based on general use The information given by the method. Of course, before any engineering design, it is best to conduct a column test on the raw material liquid to be processed to know the working performance under the proposed use conditions. This is the operating performance at inlet and concentration. The nickel concentration in the feed water is in accordance with the working capacity, leakage. For the feed and concentration, the amount of regenerant is in accordance with the regeneration time: 10 minutes, slow washing, flushing in 10 minutes, working speed conversion step, the amount of regenerant, according to the regenerant concentration, the contact time is about 10 minutes, slow washing, flushing in 10 minutes to work. The water quality of the speed regeneration water is diluted with acid, caustic soda is diluted with mineral-free soft water
Regeneration
The regeneration process is completed in two steps, first exchanging the nickel with or, and then converting the resin to the sodium form .
Preliminary research found that acid alone worked fine, but further research found that the conversion step gave the resin
superior working properties. The regeneration procedure does not depend on exchange capacity or other parameters, but rather on the complete conversion of active groups. When the nickel content range of the raw material liquid is , the optimal working flow rate is /.
Performance
The extreme selectivity of ion exchange makes the ion exchange process extremely efficient, unlike other processes such as reverse osmosis
which only target the specific ions that need to be removed from the solution. There is no effect on other irrelevant ions, such as sodium, calcium, bicarbonate and chlorine. It has the typical characteristics of removing heavy metal ions from water or wastewater to be treated.
Feed concentration
Working performance
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