Given that I have removed 'Ayn al-Najāsah, could I use a soaked towel to make the item Tahir by simply wiping instead of washing with Qalil water?
Bismihi ta'ala
Not in most cases. Wiping would not suffice when purifying, and "washing" must be done, even if it is a very small amount of water, as long as it is "washed".
There are certain laws related to using something other than water when doing istinja` from extretement of faeces. The details of this you must read in the book of laws of your Marja' taqleed.
However, in general washing must be done.
And Allah knows best.