there is no way of getting rid of ammonia
you can "lock" it to make it safe
products like ammo lock ammo lock 2 will do this.
adding zeolite to the tank will absorb it.
however the issue is why do you have ammonia in the first place, the answer is your bacteria have either died or they have become overwhelmed with you stock levels (ie you are overstocked)
how do you perform housekeeping on your tank, speccifically how are the filters cleaned?
how big is the tank and what is stocked in it?
how long has the tank been set up?
is it cycled?