Trips Aces in blind battle when the flush gets there

[HarryPoker]

Titan Poker 0.10/0.20, hand converted by the iPoker Converter at Talking-Poker

Vilain is 50/12/1.4 and I've been raising him a lot in blind battles and he hasn't played back at me yet. i really can't put him on anything else than the flsuhdraw. also, I don't want to check in case he bets big. Should I bet/fold ? check/fold ?

comments on other streets appreciated.

saw flop | saw showdown

Button ($25.53)
SB Hero ($29.91)
BB BB ($17.47)
UTG ($22.34)
UTG+1 ($2.88)
CO ($19.82)

Preflop: Hero is in the SB with A J
4 folds, Hero raises to 0.60, BB calls 0.50.

Flop (1.40) 2 A A
Hero bets 1.00, BB calls 1.00.

Turn (3.40) K
Hero bets 2.60, BB calls 2.60.

River (8.60) 5
Hero ????