Esmil Tube Air Diffusers APKV represent high efficiency without the need for maintenance. A distinctive feature of the APKV Tube Air Diffusers is their high reliability and low operating costs over a wide range of supply air flows.

Tube Air Diffusers APKV are designed for continuous aeration when minimum maintenance and maximum service life are required. The time-tested design of the air diffusers has established itself as one of the most efficient and reliable technological solutions for biological wastewater treatment.

Advantages of Esmil Tube Air Diffusers:

• Robust design and reliable operation with no need for regular cleaning;
• Resistant to supply air impurities;
• Uniform air distribution over the entire area of the aeration tank;
• Low-pressure losses resulting in reduced operating costs;
• Resistant to a wide range of challenging environmental conditions;
• Fast installation and start-up;
• Production control at every stage of equipment manufacturing.

Standard Oxygen Transfer Efficiency (SOTE)

APKV Diffusers: Pressure Loss

Operating principle of Tube Air Diffusers:

Tube Air Diffuser APKV consists of two pipes inserted into one another with an air gap between them. The outer pipe is called a disperser and is produced from LDPE by the pneumatic extrusion process. This results in a pipe material consisting of numerous interconnected pores through which air flows. The inner pipe is made of PVC and is perforated. The gap between two pipes is divided with cross-ring inserts providing uniform air supply throughout the diffuser.

1 – Perforated pipe, PVC
2 – Fibro-porous disperser, LDPE
3 – Cross ring insertion, LDPE

The supply air enters the space between the inner and outer pipes through the openings in the inner pipe. The air is then evenly dispersed into the aerated liquid through the “fibro-porous” outer pipe forming numerous and consistent fine bubbles. This ensures consistent and uniform air distribution in the aerated liquid and provides superior aeration efficiency with minimal energy cost.

Threaded diffuser joints are fixed at both ends of the diffuser featuring simple installation in branches.