Core functions and application scenarios of Fine Bubble Disc Diffuser
The core function of disc diffuser is to achieve oxygenation and agitation mixing, which efficiently transfers oxygen from the air to the water body to meet the respiration needs of microorganisms, while promoting water circulation and mixing through bubble movement. Its application scenarios widely cover municipal wastewater, industrial wastewater (such as petrochemicals, pharmaceuticals, printing and dyeing, etc.), and aquaculture, especially suitable for the aeration tank of activated sludge process in biochemical treatment engineering.
aeration diffuser
Structural characteristics: Adopting ABS engineering plastic skeleton and imported rubber/silicone membrane, hollow water filling design reduces buoyancy in water, and has strong operational stability; The membrane micropores automatically close when aeration stops, preventing sludge blockage and sewage backflow.
Performance advantages: Small bubble diameter (uniform diffusion), high oxygen utilization rate, and 40% reduction in energy consumption compared to traditional equipment; Acid and alkali resistant, without plasticizers, with long-lasting elasticity and long service life.
Installation and maintenance: Supports non-stop replacement, avoids emptying pool water and re cultivating bacterial strains through improved design, suitable for upgrading old pools.
membrane disc diffuser
Composition structure: It consists of rubber diaphragm, air distribution pipeline, regulator and connecting parts. The diaphragm and pipeline are connected by G3/4 thread, and the base is fixed on the annular air distribution pipeline.
Installation requirements: It should be installed after the completion of civil engineering and before water discharge. During leakage testing, the water depth should exceed 10cm of the aerator to ensure that the pipeline is leak free before operation.
Key points for installation and operation of aeration system
Installation process specification
Pipeline layout: Gas distribution pipelines are often arranged in a circular shape, with a main pipe flow rate of 10-15m/s and a branch pipe flow rate of 5m/s to ensure pressure balance.
Fixed and protected: The regulator is fixed to the bottom of the pool by expansion bolts. After the pipeline is installed, it is necessary to avoid damage from welding sparks, concrete and other heavy objects. The aeration head should be assembled after the civil engineering is completed.
Key to operation and maintenance
Bubble effect: During aeration, the bubble diameter is small (≤ 3mm), the diffusion is uniform, the gas-liquid interface area is large, and the total oxygen transfer coefficient kla (20) can reach 0.204-0.337min ⁻¹ 31.
Troubleshooting: If there is abnormal aeration resistance (normal range 0.13-0.4mmH ₂ O) or blockage, the adjustable aerator can be used to replace the membrane online to reduce downtime losses.
Typical application cases and advantages
Municipal sewage: After the transformation of a sewage treatment plant in a certain city using a tubular aerator, the oxygen utilization rate has been increased to over 35%, and the treated water volume has increased by 40%.
Industrial wastewater: In the treatment of pharmaceutical wastewater, the use of disc aerators combined with elastic packing can increase COD removal rate by 20%, and the membrane is resistant to organic solvent corrosion, with a lifespan of over 5 years.
The aerator has become a key equipment in water treatment systems due to its efficient oxygenation and flexible maintenance characteristics. Its technical selection needs to be comprehensively considered based on pool shape, water quality, and operating costs to achieve the optimal balance between energy conservation and treatment efficiency.