Annulment
Disposal
noun, する verb
It's obsolete so I'm going to abandon it. This is annulment. You are sending something to disposal.
はいき
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
古いテレビの廃棄に支払うお金、五千円もあれば十分なんじゃないの？
5,000 yen should be enough to dispose of the old TV, shouldn’t it?