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disc diffuser for aeration tank fish farm
The bubble diffusers produce a plethora of very small air bubbles which rise slowly from the floor of a wastewater treatment plant or sewage treatment plant aeration tank and provide substantial and efficient mass transfer of oxygen to the water. The oxygen, combined with the food source, sewage, allows the bacteria to produce enzymes which help break down the waste so that it can settle in the secondary clarifiers or be filtered by membranes.
The diffuser are widely applied in the current sewage treatment technologies. It is the core component parts of the sewage treatment system and directly effect the good operation of the wastewater treatment plant, as well as the effluent quality.


1.High Oxygen Transmission efficiency (OTE)
2.Good effect on saving in power,and low operating cost
3.Excellent counter flow prevention function
4.Long guaranteed life, around 5 years
5.Easy installation



MODEL | HDH-215 | HDH-260 | ||
Diameter of Rubber membrane(mm) | 215 | 260 | ||
Air Flow(m3/h) | 0.5~5 | 1~8 | ||
Service Area(m2/piece) | 0.2~0.6 | 0.3~0.8 | ||
Oxygen Utilization Ratio(%) | 22~40 | 30~50 | ||
Oxygenation Capacity(kg O2/kw·h) | 0.13~0.40 | 0.20~0.50 | ||
Theoretical Power Efficiency(kg O2/kw·h) | 4.5~6.5 | 6.0~8.o | ||
Resistance Loss(Pa) | <3000 | <3000 | ||
Air Bubble Diameter(mm) | 1~3 | 1~3 | ||
Connector size | G3/4" G thread | |||
Note: The above data is tested in 4M depth clear water. | ||||
WORKING CONDITION | ||
Ambient Air Temperature(℃) | (-30.0~45.0℃) (max:90~100℃) | |
Contact fluid temperature(℃) | 4~50℃ | |
pH | 4~9 | |
Max.Working Depth(m) | 10 | |
Durability | 24h/day Non-stop Running or SBR process is ok | |
MAIN SPACE PARTS MATERIAL | ||
Rubber Membrane | EPDM | |
Connectors | EPDM | |
Clamping Ring | Strengthened PP | |
Membrane Support | Strengthened PP | |
Checke Valve | Strengthened PP+EPEM | |
Air Pipe | ABS/UPVC | |
Air Distributing Main Pipe | ABS/UPVC | |
Pipe Fitting | ABS/UPVC | |
Fastener of Main Pipe | 304 Stainless Steel | |
1.Aeration for SBR, MBBR reaction basin,contact oxidation pond ,and activated sludge aeration basin in sewage disposal plant;
2.Aeration for denitrification/dephosphorization aerobic processes;
3.Aeration for excreta and animal waste water treatment plant;
4.Aeration of deep aeration basin;
5.Aeration for high concentration wastewater aeration basin, and areation for regulating pond of waste water treatment plant;
6.Aeration of fishpond and other applications.


Packing | 30 pieces per carton |
Carton size | 60*40*30 cm |
Gross weight | 14.2KG |
Payement terms | FOB, CIF, CFR, DDP, DDU, FTA, etc. |
Port | Shanghai, Ningbo |
Delivery time | Within 5 working days after received payment |









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