Hi. It relates to the amount ...
Published by alireza Reyhan, Eng
Hi. It relates to the amount of nickel and you flow rate. If you alter the pH to 8.5-9, thd nickel will be removed in the form of hydroxide and normaly, around 50% of hardness will be setteled as well. The amount of nickel can be removed between 95-98%.
The remainig Ni, can be removed by special ion-exchange resins from PUROLITE company.
Good luck