Water until water bags submerged fully to optimize the flow of oxygen is higher. After that, water was filling the air, the air is moving out of the water to push the envelope. The waggle of buoyancy in the water can push to move oxygen combines with water to a depth below the surface as well. Thus causing the agitation and aeration blended. And cause the flow of water along the direction of the well. Engineering can be a dirty wastewater (BOD) 250 milligrams per liter is 600 cubic meters per day, can be effective in reducing BOD was above 90 percent and consumes very little cost. The cost is 96 cents per cubic meter, the amount of dirt in kilograms BOD cost 3.84 baht.
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