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Variable pore aerator
Product characteristics
Product advantages
Product Classification:
Key words:
Variable pore aerator
Overview
There are many types of commonly used aeration equipment in the country, which can be divided into two main categories based on the method of air supply: aeration with air blowing and mechanical aeration. The aeration system has undergone three types of oxygenation devices: large bubbles, medium bubbles, and small bubbles. The development process is measured by the oxygenation efficiency based on bubble size as an intuitive indicator. Large bubbles are represented by perforated pipes and diffused aerators, with an oxygen utilization rate of about 5%; medium bubbles are represented by grid and rotary mixing aerators, with an oxygen utilization rate of about 12%; small bubbles are represented by steel and rubber membrane variable micro-perforated aerators, with an oxygen utilization rate of over 20%. Our company has developed two types of variable micro-perforated aerator products: FQ-KBB type disc membrane micro-perforated aerator and pipe (pressure-resistant flat) type variable micro-perforated aerator.
Working Principle
The blower distributes air through the air main pipe to the air branch pipe, and enters the disc membrane type variable micro-perforated aerator or pipe (pressure-resistant flat) type variable micro-perforated aerator through a special distribution connector. The membrane opens automatically under air pressure. Air is ejected from the opened holes for aeration.
Product Features
1. Disc Membrane Type Variable Micro-Perforated Aerator
The aerator is made of ABS engineering plastic for the chassis, support plate, and cover, while the aeration plate is made of special synthetic rubber, creating uniformly sized fine holes on the surface. During oxygenation aeration, the micro-holes on the membrane open automatically under air pressure to ensure gas passes through and forms fine bubbles in the water. In a non-working state, the micro-holes on the membrane are closed to prevent contaminants from entering the gas pipeline system. Additionally, a one-way air valve is installed on the aerator's chassis, which can block the mixed liquid from entering the gas distribution pipe when the aeration system stops, effectively preventing clogging issues.
2. Pipe (Pressure-Resistant Flat) Membrane Type Variable Micro-Perforated Aerator
The simplified aeration hard pipe is made of ABS engineering plastic, and the simplified membrane is made of special synthetic rubber. The ends of the cylindrical membrane are fixed to the simplified aeration hard pipe with stainless steel clamps. During oxygenation aeration, air overflows from the small holes in the simplified aeration hard pipe, entering the small gap between the hard pipe and the outer cylindrical membrane. The cylindrical membrane is subjected to uniform annular tension, causing it to bulge slightly, thus opening the micro-holes on it, allowing air to be released for aeration and forming fine bubbles in the water. In a non-working state, the micro-holes on the membrane are closed to prevent contaminants from entering the gas pipeline system.
Main Features:
The EPDM composite polymer rubber membrane never ruptures. 87.5% of the generated small bubbles are less than 3mm. The utilization rate is stable and exceeds the national standard.
It has the function of not clogging, and the attached surface contaminants can separate automatically. It prevents sewage from backflowing, making it more suitable for intermittent aeration operations, such as SBR processes.
Main Technical Indicators
| Oxygen Utilization Rate (%) | 30~35.10 |
| Oxygenation Capacity (kg/h) | 0.1~0.2 |
| Theoretical Power Efficiency (kg/kw.h) | 3-6 |
| Resistance Loss (Pa) | 3200 |
| Service Area (m2) | 0.4-0.6 |
| Membrane Specification (mm) | 215 |
| Air Supply (m3/h) | 1-3 |
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