A Brief:
Diaphragm type microporous aerator is the most developed in the 80 s New aeration device, the aeration device is small, the diameter of bubble diameter is small, gas-liquid interface area is large, the gas and liquid bubble spread evenly, won't produce hole plugging, corrosion resistance is strong, the environmental engineering at tongji university in Shanghai and China municipal engineering design institute of north China water and wastewater oxygen filling test, and the more than 50 users use effect is good for many years (more than normal product a fixed spiral aerator, disperse flow aerator and perforated tube aerator energy consumption reduced by 40%, 40%) or increase the sewage treatment. Especially suitable for the urban sewage and large plant expansion and new old transformation, aeration and the aeration tank can be intermittent operation.
B, connection and installation:
Aeration device by the aerator, the gas pipe, tee, four-way, elbow, regulator, fittings, removal system, etc. Cloth gas pipe press usually circular layout, aerator according to gas and pool form layout density, gas pipe connection using aerator and cloth G3/4 thread connection, the base for the internal thread (fixed in cloth tracheal path) aerator for external thread, the regulator according to the required size first installed through bolts fixed to the bottom, and then use clamp under the cloth gas pipe is fixed on the regulator, to prevent other operations such as welding sparks and civil, concrete and other heavy damage to the aeration device, must wait for the end of the civil engineering on the water before put aerator, in order to prevent the pipeline and the connection part of the leak, should water more than 10 cm base aerator depth test, leakage and ventilation, such as found that leakage should be promptly eliminate pipe connection parts, and then formally put into operation. 
C, main Technical parameters:
Aerator size: Φ 215 mm and 260 mm
Service area: 0.25 to 0.55 m2 / a, 0.35 to 0.75 m2 / a
Aeration Diaphragm run average pore: 80-100 microns
Air flow rate: 1.5 3 m3 / h
Total oxygen transfer coefficient, kla 0.204 0.337 min (20 ℃) - 1
Oxygen utilization: 3.2 27.7% (3.2 m) the depth of the water
Aerobic capacity: 0.112-0.185 KgO2 / m3h
Oxygen filling dynamic efficiency: 4.46-5.19 KgO2 / KWH
Mmh2o aeration resistance: 180-180
Air duct design should consider the pressure balance, got behind the best ring network, each group of inlet pipe valve should be set up, easy to adjust the volume of air. Air duct design velocity: main for 10 to 15 m/s; Branch pipe is 5 m/s. Surface of the aerator is apart from the bottom mounting height: 270 mm, 250 mm, the push plate is 200 mm.