De or het zoutafzetting?

The correct Dutch article is:

de zoutafzetting

Rule Words ending in -ing: almost always de. See the rule

How to use zoutafzetting

the zoutafzettingde zoutafzetting
this zoutafzettingdeze zoutafzetting
that zoutafzettingdie zoutafzetting
our zoutafzettingonze zoutafzetting
your zoutafzettingjouw zoutafzetting
every zoutafzettingelke zoutafzetting
which zoutafzetting?welke zoutafzetting?
a big zoutafzetting / the big zoutafzettingeen grote zoutafzetting, de grote zoutafzetting