Patent ID: 8206495

Claim:
A gas filtration system, comprising: a water filtering system having multiple tanks connected to each other, each of the tanks having a predetermined level of water for purifying gases; at least one pump for forcing the gases in or out of the tanks; and a gas transferring system coupled with the tanks for transferring the gases therebetween, wherein the gas transferring system comprises: first gas transferring pipes mounted on a top surface of the respective tanks and extending into respective adjacent tanks, and second gas transferring pipes mounted on the top surface of the respective tanks for transferring the gases and connected to the pump; wherein each of the first gas transferring pipes includes: a lower portion positioned in the lower space of the tanks, having a closed M shape, and having a plurality of circular holes formed along a length of the pipes for releasing the gases, wherein the gases contained in bubbles rise to a top surface of the water level, and an upper portion extending contiguous to the lower portion; and wherein the predetermined level of the water is decided on the basis of a power of the at least one pump.