Bubble Diffuser – High-Efficiency Oxygenation Device

The bubble diffuser is a device used to introduce air or oxygen into water, widely applied in water treatment, wastewater treatment, and aquaculture. It works by diffusing air into tiny bubbles, allowing oxygen to dissolve fully in the water, increasing the dissolved oxygen content, promoting the growth of aerobic microorganisms, thereby accelerating the degradation of organic pollutants. Common types of bubble diffusers include plate bubble diffusers and tube bubble diffusers, with different types suitable for different water treatment needs, helping to enhance the self-purification capacity and treatment efficiency of water bodies.

Specification
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Specification

KKI Series Plate Bubble Diffuser
PIK300 Plate Bubble Diffuser
GM Series Tube Bubble Diffuser
HKC Series Plate Bubble Diffuser

KKI Series Plate Bubble Diffuser

The KKI series plate bubble diffuser housing base is equipped with a patented check valve welded using ultrasonic technology, providing the bubble diffuser with dual check functions. This design ensures better prevention of backflow of sewage after shutdown, making it suitable for both intermittent and continuous aeration processes. It performs particularly well in intermittent aeration processes. Among them, the KKI E type is a medium-hole bubble diffuser in the KKI series. The bubbles produced by the medium-pore bubble diffuser are slightly 1 mm larger than those of the micro pore bubble diffuser, making it suitable for high-concentration wastewater treatment plants where membrane are prone to clogging. Additionally, the E-type bubble diffuser offers superior mixing performance.

Technical Parameters

Table 1: KKI Series Plate Bubble Diffuser Technical Parameters
Model	Air Flow Range (m³/h)	Optimal Air Flow Range (m³/h)	Oxygen Utilization Ratio (6 m Water Depth)	Theoretic Dynamic Efficiency (KgO₂/KW.h)	Drag Loss (Kpa)	Service Area (m²/piece)
KKI215	1–4	2–2.5	≥ 32%	4.5–6.5	1.0–3.0	0.25–0.75
KKI215E	1–6	2.5–3	≥ 30%	5–7	1.0–2.8	0.25–0.75
KKI260 / KKI280	1–6	3–3.5	≥ 35%	4.5–7.8	2.5–4.3	0.5–1.0
KKI280E	1–8	3–4	≥ 33%	4.8–7.9	2.0–3.5	0.5–1.0

PIK300 Plate Bubble Diffuser

The PIK300 plate bubble diffuser housing base is specially structured to encase a small steel ball. When the system is shut down, the steel ball is pressed against the rubber ring under pressure to prevent wastewater from backflowing into the pipeline. This dual check function allows it to perform exceptionally well in intermittent aeration processes.

The PIK300 plate bubble diffuser offers two installation methods: wedge and threaded. The wedge-type bubble diffuser is specifically designed to work with DN80 pipelines, which can be made from various materials such as UPVC, ABS, stainless steel, etc. The threaded type can be used with all pipe diameters, with commonly used branch pipe diameters including DN40, DN50, DN65, DN80, DN100, etc.

Front and back of one PIK300 plate bubble diffuser

Technical Parameters

Table 2: PIK300 Plate Bubble Diffuser Technical Parameters
Air Flow Range (m³/h)	Optimal Air Flow Range (m³/h)	Oxygen Utilization Ratio (6 m Water Depth)	Theoretic Dynamic Efficiency (KgO₂/KW.h)	Drag Loss (Kpa)	Service Area (m²/piece)
1–8	3–5	≥ 35%	6.0–8.0	2.0–6.0	0.5–1.5

GM Series Tube Bubble Diffuser

The diaphragm of the GM series tube bubble diffuser encases the liner and is secured at both ends with clamps. One end of the pipeline is open; after being submerged in water, the bubble diffuser pipeline fills with water, significantly reducing buoyancy. The GM series tube bubble diffuser is suitable for both continuous and intermittent aeration, offering high cost-effectiveness.

Technical Parameters

Table 3: GM Series Tube Bubble Diffuser Technical Parameters
Model	Air Flow Range (m³/h)	Optimal AIR FLOW RANGE (m³/h)	Oxygen Utilization Ratio (6 m Water Depth)	Theoretic Dynamic Efficiency (KgO₂/KW.h)	Drag Loss (Kpa)	Service Area (m²/piece)
GM67/1000	2–12	6–10	≥ 35%	4.5–8.7	2.0–5.0	0.5–2.0
GM90/1000	2–18	10–12	≥ 35%	5.5–11.7	2.5–5.5	0.8–3.0

HKC Series Plate Bubble Diffuser

The HKC series bubble diffusers use corundum plates instead of diaphragms. Corundum plates are not prone to aging and are resistant to acids and alkalis. However, because the holes are fixed and unchangeable, during downtime, wastewater can easily backflow into the pipeline, so they are only suitable for processes requiring continuous aeration like the AAO treatment process. At the same time, due to their relatively low energy consumption, they are suitable for large urban wastewater treatment plants.

The HKC series bubble diffuser offers two installation methods: wedge and screw. The wedge-type bubble diffuser is specifically designed to work with DN80 pipelines, which can be made from various materials such as UPVC, ABS, stainless steel, etc. The threaded type can be used with all pipe diameters, with commonly used branch pipe diameters including DN40, DN50, DN65, DN80, DN100, etc.