There should be a garbage bin and an outdoor toilet somewhere near Kangerluarsuk Tulleq Nord. Here's the source:

Kangerluarsuk Tulleq Nord
Sleeps: 6 beds + extra space
GPS: 66.9879 -53.205986
Features:
    Large cooking and eating area
    Garbage bin
    Right on the fjord edge
    Optional excursion across the tidal river to the summer homes and a second valley

(Source: arcticcircletrail.gl/hiking/on-the-trail/act-huts/)