If you delegate, you will receive rewards back as either Steem or SBD - the amount you receive is a weighted percentage of deposits made, dependent on how much you have delegated. You can then use to top up your own dustsweeper balance in the normal way.

Coin Marketplace

STEEM 1.13
TRX 0.14
JST 0.130
BTC 56514.99
SBD 7.07