In this second installment, we’re featuring our Degassing and Aeration System, demonstrated using the NAGASEP Test Module.

Controlled Oxygen Management for Water Treatment

Water in contact with the atmosphere typically contains around 8 ppm of dissolved oxygen under saturated conditions. In many water treatment processes, precise control of dissolved gases—both removal and reintroduction—is essential.

This system demonstrates how dissolved oxygen can be efficiently removed and reintroduced using silicone hollow fiber membrane technology.

How the System Works

The system consists of a degassing module, an aeration module, and an oxygen enrichment process working together in a continuous flow:

• Green tank on the left: Water containing approximately 8 ppm of dissolved oxygen is pumped into the degassing module (Model: M40-A).
• Blue tank on the right: inside the module, pressure is reduced by a vacuum pump. As the water passes through the silicone hollow fiber membranes, dissolved oxygen is removed, reducing the concentration to 1 ppm).
• The degassed water is then pumped into the aeration module (Model: M40-B), where oxygen-enriched air (30% O₂) is supplied. Oxygen permeates through the membrane, increasing the dissolved oxygen level back to 8 ppm.

At the same time, ambient air (21% O₂) is fed into the oxygen enrichment module. Under reduced pressure, oxygen selectively permeates through the hollow fiber membranes, producing oxygen-enriched air. The oxygen concentration is monitored by the oxygen analyzer located at the center of the system, and the enriched air is then supplied to the aeration module.

See the System in Action

This exhibit highlights how membrane-based degassing and aeration can provide precise, energy-efficient dissolved gas control for water treatment applications.

We invite you to visit our booth and see the system operating live at the exhibition.

Visit Us at InterAqua 2026

Dates: January 28–30, 2026
Venue: Tokyo Big Sight
Booth: 2S-T14

The post What to Expect at InterAqua 2026: Featured Exhibits (Part 2) appeared first on NAGASEP.

We are thrilled to announce that we’ll be heading to Tokyo Big Sight for InterAqua 2026 from January 28th to 30th. To give you a sneak peek of what we’re bringing to the show, we’re launching a three-part blog series highlighting the three water treatment systems we’ll have on display.

In this first installment, we’re showcasing our Aerobic Wastewater Treatment System, powered by Membrane Aerated Biofilm Reactor (MABR) technology.

Redefining Efficiency with MABR

MABR technology represents a significant leap forward in wastewater treatment. Unlike traditional activated sludge processes, which can be energy-intensive, MABR works by delivering oxygen directly to a biofilm attached to a membrane surface. This allows the microbes to break down organic matter and nutrients more efficiently while drastically cutting the energy needed for aeration.

A Closer Look at the Technology

The system we’ll be exhibiting features our own in-house manufactured silicone hollow fiber membranes. Here’s how it works:

• Pressurized air is supplied to the inner lumen of the hollow fibers via a compressor.
• Oxygen permeates through the membrane wall and diffuses into the surrounding water on the shell side.

This direct and controlled oxygen delivery supports stable biofilm growth and high treatment performance with minimal energy loss.

We’d love to show you how this technology can optimize your operations. Come visit us at the booth to see it in action!

Visit Us at InterAqua 2026

• Dates: January 28–30, 2026
• Venue: Tokyo Big Sight
• Booth: 2S-T14

The post What to Expect at InterAqua 2026: Featured Exhibits (Part 1) appeared first on NAGASEP.

During the exhibition, we surveyed the current market for hollow silicone membranes in China. Most of the products we found had an outer diameter of around 1.0–1.1 mm.
In comparison, Nagasep’s hollow silicone membrane is produced at 0.17–0.23 mm. This difference in thickness was clear when we looked across samples from various suppliers, and it makes Nagasep’s membrane unique in the current market landscape.

At the exhibition, we also visited the booth of @Boguan Jingwei, which displayed a comparison of commonly used porous filtration membranes, including PTFE, PVDF, Nylon, PES, PVC, MCE, UPE, PP and PET.

If categorized in the same chart, Nagasep’s membrane would be added as the final line, positioned below the PET layer, as it represents a non-porous silicone membrane rather than a porous filtration medium.

The post Hollow Silicone Fiber at Medtec China 2025 appeared first on NAGASEP.

At the exhibition, we will present the latest Nagasep® Silicone Hollow Fiber Membrane Modules, designed for advanced gas and liquid applications. These high-performance modules are used in gas separation, liquid degassing and aeration, dissolved gas control, and VOC recovery, offering versatile solutions across a wide range of industries including water treatment, energy, medical, and analytical instruments.

In addition, our booth will feature systems such as aerobic wastewater treatment units, solvent recovery units for wastewater, and degassed/aerated water circulation flow systems, showcasing real-world applications of Nagasep® technology.

We invite you to visit our booth (Booth No. 2S-T14) to experience our latest membrane separation solutions.

Nagasep remains committed to delivering efficient and reliable water and gas treatment technologies through continuous innovation in membrane science.

Official Inter Aqua 2026 Website

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