Penetration air Particle to boundaries

Dear Developer,
I made a simulation of multi-phase sloshing but air particle can penetrate the boundary, I used a layer on the boundary but it only reduces particle out. is there a way to tackle particle out from the tank?.

https://drive.google.com/open?id=1qSWModHsWu0xaV3rezLTy-n_v7rix-ii
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