Coarse Bubble Diffuser

Product Description

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Diffuser Description

The diffuser is the special design for MBBR aeration system. The coarse-bubble design is employed to mix the suspended media evenly throughout the reactor while providing the mixing energy required to slough old biofilm from the internal surface area of the media and maintain the dissolved oxygen required to support the biological treatment process.

Coarse bubble diffuser is made of stainless steel (SUS304 or SUS316L is optional).The coarse bubble diffuser provides maximum aeration and mixing efficiency.The standard length of diffuser is 600 mm. A 600mm long diffuser can achieve a 1250mm air release circumference.It has a service life of over 15 years.

The diffuser’s advantage:

1) Multi-level air hole design, ensure the aeration intensity uniform, high dissolved oxygen efficiency.

2) The bottom hole design ensures that the pores remain open and will not be blocked.

3) Prefabricated components, quick and convenient installation. It can be installed in a variety of pools.

Optimum oxygen transfer efficiency is achieved when operating in the middle to low end of the airflow range.

Diffuser Type	Design Airflow		Diffuser Length		Net Operating Buoyancy		Dry Weight
Diffuser Type	scfm	m3N/h	in	mm	lb	kg	lb	kg
BC-300 Ⅰ	0-28	0-48	12	300	2.12	0.96	2.2	1.0
BC-300Ⅱ	0-26	0-44	12	300	2.0	0.91	1.81	0.82
BC-600Ⅰ	0-51	0-87	24	600	4.19	1.9	4.62	2.1
BC-600Ⅱ	0-47	0-80	24	600	4.0	1.82	3.26	1.64

The approximate operating pressure of the diffuser at the mid-range is 2 to 4 inches (0.5 - 1.0 kPa).

Operational Data
α-value	0.7~0.9
Air load per diffuser element	10~50m³/h
Backpressure of the diffuser	5~20mbar
Oxygenation efficiency SOTE	2~3%/m (clean water)
Oxygenation efficiency SOTE	3~5%/m (30%~50% media fill rate)