£5 NL HE MTT: Lost the majority of the stack with AQ ran into slow-played AA on AT3KT

Beginning position and stack:
Me (BTN): 137518
SB: 99600
BB: 100000
Blinds: 1000/2000 (300)

All ante 300

Pre-flop (900)
Post SB 1000
Post BB 2000
I got dealt Ac Qd
I raised to 7000
SB called 6000
BB folded

Flop (16900) As Td 3d
SB checked
I bet 16900
SB called 16900

Turn (50700) Kc
SB checked
I bet 113318 and became all-in
SB called 75400 and became all-in
Uncalled bet 37918 retured to me

I showed Ac Qd (9.09%)
SB showed Ad Ah (90.91%)

River (201500) Th

I got a pair of Aces, SB got a triplet of Aces. SB won the pot 201500.

My tournament life was basically over at that point. Where did I play wrong?

You bet to large on all streets. We dont want to create a situation in poker, where we bet for value, but only get action, when we are beat. Preflop something like 2,5BB is standard. Flop maybe 30-40% pot not full pot. As played turn is a check and then make a decision on the river. Even AJ will fold to this sizing, unless the opponent is really bad, so you are just value owning yourself. Everyone lose some chips here, but you dont need to give the opponent a full dubble up, at least not when he make a preflop mistake by not 3-betting.

I think this is starting to look like a trend of you getting it in with a hand that's not going to beat much of the hands that will give you action on this type of board.