As the most mature and common method, it’s  usual, at the bottom of th aerobic pond, to fix the aeration device, which is a closed ring made of tee, elbow, three pieces of adjustable bracket, reinforcing polypropylene joint, stainless steel hose clamp, stainless steel expansion bolts and aeration pipes, which are made from environmental friendly corrosion resistant reinforcing PP, ABS, UPVC and other engineering plastics.The installing with the aeration pipe and leveling bracket ,can be fully and firmly fixed at the bottom of the pond optionally, is not easy to be damaged to the aeration film by shaking. Meanwhile, in the domestic sewage and not serious water quality treatment, there is no oxygen supplying dead zone due to the short distance between the pond bottom and the device, which guaranteed long term even aeration, strong oxygen supplying capacity, high dissolved oxygen.