A gas filtration apparatus includes a first pipeline configured to divide transmitted gas and air to second and third gas flows, transmit the second and third gas flows to second pipeline bundle which is configured to divide each of the second and third gas flows to two or more gas flows and transmit the divided gas flows to a plurality of filters, a purifying tank configured to contain first water for purifying the divided gas flows, a plurality of filters positioned in a lower space of the purifying tank and configured to disintegrate one or more bubbles created by the divided gas flows, and a gas outlet configured to collect a plurality of bubbles emitted from the first water and release the collected bubbles to the outside of the gas filtration apparatus.