Man wickelt ihn in ordentlichen und sauberen Stoff ein und vergräbt ihn an einem sauberen, respektablen Ort in einer Grube.

ALLAH weiß es am besten!

Darul ifta, Darul Uloom Deoband

Originaltext:

What should be done to a Quran which is damaged by insects and is in no way readable?

  Answer: 56820   Nov 26,2014   (Fatwa: 113/110/B=02/1436)

They should be wrapped in neat and clean clothes and buried in any clean and respectable place in a pit.

Allah (Subhana Wa Ta'ala) knows Best

Darul Ifta,
Darul Uloom Deoband