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Domestic Sewage Treatment Plant Equipment , Adjustable Fine Bubble Air Diffuser

GSD Industrial Co., Ltd.
GSD Industrial Co., Ltd.
City: Shanghai
Province/State: Shanghai
Country/Region: China
Tel: 86-21-50550317-302
Contact Person:
Ms Emma Huang

Domestic Sewage Treatment Plant Equipment , Adjustable Fine Bubble Air Diffuser

Brand Name : GSD
Model Number : RSD
Certification : ISO
Place of Origin : TAIWAN
MOQ : Negotiation
Price : Negotiation
Payment Terms : T/T
Supply Ability : 10000 sets per month
Delivery Time : 30 days
Packaging Details : carton
Material : PU/EPDM
Air flow : 1.8-12 m3/h
OTE : 26%-29%
Headloss : 2400Pa-3000Pa
Outside Screw : 3/4"
Water Depth : 2-5m
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Domestic Sewage Treatment Plant Equipment , Adjustable Fine Bubble Air Diffuser​

RSD series have RSD144, RSD245, RSD330 3 types, RSD144 is large bubble disc aerator, RSD245/RSD330 are fine bubble disc aerators.


1. Aeration for SBR 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 wastewater treatment plant;
4. Aeration of deep aeration basin;
5. Aeration for high concentration wastewater aeration basin, and aeration for regulating pond of wastewater treatment plant;
6. Aeration of fishpond and other applications.


High Oxygen Transmission Efficiency (OTE)

The pores on the EPDM membrane are almost 100% even, tinyair bubbles of 1-3mm are formed (the air bubbles are petty and even with good flow velocity and fluid condition), and the contact area with the sewage water is increased, so the oxygen transmission efficiency is high. Under the best ventilation capacity, the average oxygen transmission efficiency for every meter of water depth is up to more than 6%.

Good effect on saving in power, and low operating cost
Because of the high oxygen transmission efficiency, low powered blower can satisfy the oxygen volume required by aeration process. As a result, power is saved, operating cost is decreased, and the cost is reduced.

Excellent counterflow prevention function
The back stops are all equipped with valves to avoid counterflow when the air transmission is broken off, enabling the pores to shut smoothly and applicable to intermittent operation. Its unique and even air vents can lead the airflow effectively, and can prevent sewage water from flowing into the aerator pipeline effectively.

Long guaranteed life
EPDM membrane is a special elastomeric polymer with high non-deformability and anti-tearing index. The membrane is made at even thickness with small pressure. Special processing technology is used to overspread 6000 micro-pores on the surface of the membrane. Under running condition the air bubbles rise with spiral whirlpool, giving self-purification ability to the membrane. The life of the membrane under normal use is guaranteed for 5 years, but usually it is necessary to use it together with the water removal system.

Unique ring seal
The aeration head tightening ring provides tight sealing effect between the aeration head base and the membrane washer -- the higher the air pressure, the better the sealing effect.

Easy installation
PVC soft connector can be installed directly without any other auxiliary tools. The operation is easy and convenient.


Performance parameters:

MaterialStating ringPUABSABS
SpecificationsAir flow12-24m3/h1.8-9m3/h2.4-12m3/h
SpecificationsInlet attackOutside screw 1"Outside screw 3/4"Outside screw 3/4"


Water Depth 4m

Air flow 15m3/h 20℃


Water Depth 4m

Air flow 3m3/h 20℃


Water Depth 4m

Air flow 3m3/h 20℃



Air flow 15m3/h 20℃


Air flow 5.1m3/h 20℃


Air flow 7.2m3/h 20℃

Headloss curve:

OTE curve:


Product Tags:

wastewater air diffusers


wastewater aeration systems

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