In Korean tradition, dreaming of rubbish is read as mixed. It is most often tied to 전반, 재물.
Throwing rubbish out is clearing old worry and bad ties; rubbish piling up, matters left undone. Finding something in it, gain from what was discarded.
Tradition reads the symbol as an omen; psychology reads the same dream as a mirror of your present state. Describe your dream and both readings appear together. Interpret your dream