When December 24 sacks, b.e. 2531 his Majesty the King's and the format. The story was the issue of waste water by dissolved oxygen in water is the essence of wastewater aeration into two ways: one way. Use compressed air to blow into the vent under the surface of the water bubble exploded, and another way is probably done by a lap or more turbines baler David on the surface of the water and let the surface of the water, according to the original agreement. Without such a slow rotation, water turbine A small electric motor with power of up to 2 HP, or may use the power of water flow, it is possible to consider creating a prototype and then reinstall the trial treatment inside the phramongkutklao hospital and Wat bowonniwet Vihara.