1. Product Overview:
The flat membrane aerator is the latest type of aeration device developed in the 1980s. The device has small bubble diameter, small gas-liquid interface diameter, large gas-liquid interface area, uniform bubble diffusion, no pore blockage, and strong corrosion resistance. It has been tested for water and sewage oxygenation by the School of Environmental Engineering at Tongji University in Shanghai and the North China Design Institute of Municipal Engineering in China, and has been used by more than 50 users for many years with good results (reducing energy consumption by 40% or increasing sewage treatment capacity by 40% compared to conventional products such as fixed spiral aerators, diffuser aerators, and perforated tube aerators). Especially suitable for urban sewage and the construction and expansion of large factories, as well as the renovation of old aeration tanks, and the aeration tanks can operate intermittently.
2. Technical parameters:
Aerator size: Φ 215mm, Φ 260mm, Φ 300mm
Service area: 0.25-0.55m2/piece, 0.35-0.75m2/piece
Average pore size of aeration membrane during operation: 80-100 microns
Air flow rate: 1.5-3m3/h per hour
Total oxygen transfer coefficient: kla (20 ℃) 0.204-0.337min-1
Oxygen utilization rate: (water 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
The design of air pipes should consider pressure balance and preferably form a circular network. Each set of intake pipes should be equipped with valves to facilitate the adjustment of air volume. Design flow rate of air pipe: 10-15 meters/second for main pipe; The branch pipe is 5 meters per second. The installation height of the aerator surface from the bottom of the tank is 270mm and 250mm, and the push plate is 200mm.

Ordinary type on the market

Without a check valve, after long-term use, sewage and sludge may flow back into the pipeline, affecting the service life of the fan and causing uneven aeration. The edge of the thread is thin and prone to breakage, which affects its service life. The nozzle of the aerator is flat, and the rubber ring is exposed on the surface. When installed and tightened, the rubber ring is extremely prone to deformation, causing air leakage.

Aiqin optimized type

Cross shaped check valve, after excellent modification, the check valve can move freely, with good check effect, effectively preventing sludge and sewage from flowing back, not easy to block, and even aeration. Thickening the edge of the thread increases its service life. Optimization of the concave mouth of the aerator, completely wrapping the rubber ring to prevent deformation and air leakage of the rubber ring.