Brief: 
Diaphragm type microporous aerator is most New aerator developed in the 1980s, which means aeration bubble diameter is small, gas-liquid interface of small diameter, large gas-liquid interfacial area, bubble spread evenly, no clogging, corrosion resistance, by Shanghai Tongji Environmental Engineering and the North China Municipal Engineering Design Institute of water and sewage oxygenation test, and after more than 50 years the use of effective user (than conventional products fixed spiral aerator, disperse flow aerator and perforated pipe aerator to reduce energy consumption 40%, or an increase sewage treatment capacity 40%). Especially suitable for urban sewage and large plant expansion and transformation of the old aeration tank and aeration tank can be run intermittently. 
B, connection and installation of aeration pipes: 
Aerator from the aerator, gas distribution pipes, tees, crosses, elbows, regulators, connectors, remove devices and other components. Gas distribution pipelines in the usual circular arrangement, aerator according to the amount of gas pool-shaped layout and connection density, aerator and gas distribution pipelines using G3 / 4 threaded connection, the base for the internal thread (fixed in the cloth tube lane) aerator is externally threaded, installation When the first regulator according to the desired size with expansion bolts in the bottom, and then use the cloth gas pipeline hoop fixed to the regulator, in order to prevent other jobs such as welding sparks and civil engineering, the concrete and other heavy damage aerator must wait after the end of the civil works on the aerator installed before water, in order to prevent the pipeline and the connecting portion leak, should turn on the water bottom depth of about 10cm over aerator leak testing, then the ventilation pipe connections if there is leakage should be immediately removed, and officially put into operation. 
C, the main Technical parameters: 
aerator Size: Φ215mm, 260mm 
Service area: 0.25-0.55m2 / a, 0.35-0.75m2 / a aeration Diaphragm run average porosity: 80-100 microns 
Air flow: 1.5-3m3 / a h 
Oxygen transfer coefficient: kla (20 ℃) ​​0.204-0.337min-1 
Oxygen Utilization: (depth 3.2m) 18.4-27.7% 
Oxygenation capacity: 0.112-0.185KgO2 / m3h 
Oxygenation Power Efficiency: 4.46-5.19KgO2 / kwh 
Aeration resistance: 180-280mmH2O 
Air tube design should consider the pressure balance, the best together into a ring network, each intake pipe valve should be set up, easy to adjust the amount of air. Air tube design flow: dry tube 10-15 m / sec; manifolds of 5 m / sec. aerator from the bottom surface mounting height: 270mm, 250mm, push plate is 200mm