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China Deoxygenation Membrane Equipment Suppliers and Factory in China for Effective Water Treatment Solutions Suppliers, Supplier
Product Description
⚙Working Principle
The core working principle of the deoxygenation membrane equipment is based on Henry's Law and the gas
-liquid mass transfer process. Henry's Law states that at a constant temperature, the equilibrium concentration of a dissolved gas
in a liquid is directly proportional to the partial pressure of that gas in the gas phase. The equipment uses a hydrophobic microporous hollow
fiber membrane as the gas-liquid contact interface, creating a dissolved oxygen concentration gradient across the membrane that drives oxygen molecules to migrate from the liquid
phase to the gas phase.
The membrane material is selected from hydrophobic polymers such as polypropylene (
PP) or polyvinylidene fluoride (PVDF). The pore size of the membrane micro-pores ranges from 0.01 to
0.1 micrometers. The hydrophobic nature prevents the water phase from penetrating the membrane pores, while gas molecules dissolved in the water can freely pass
through the membrane pores into the gas phase side.
A vacuum pump creates a negative pressure environment on the gas phase side of the
membrane module, bringing the oxygen partial pressure on the gas phase side close to zero. Water containing dissolved oxygen flows on the liquid phase
side of the membrane module. Driven by the partial pressure difference, oxygen molecules pass through the membrane pores into the gas phase side and are continuously
discharged by the vacuum pump. In this mode, the outlet dissolved oxygen concentration can be reduced to below 1 μg
/L.
🧪High-purity Nitrogen Gas (Purity ≥ 99.999%)
Is introduced into the gas phase side of the membrane module as a sweep gas
. The high-purity nitrogen maintains an extremely low oxygen partial pressure on the gas phase side. Driven by the concentration gradient, dissolved
oxygen in the liquid phase passes through the membrane pores into the gas phase side and is discharged along with the sweep gas.
In this mode, the outlet dissolved oxygen concentration can be reduced to below 5 μg/L.
An ideal solution for meeting short-term or long-term decentralized water supply demands
📍Application Fields
✔ Ultrapure water preparation for the electronics and semiconductor industry.
✔ Boiler makeup water deoxygenation in the power and heating industry.
✔ Preparation of water for injection and purified water for the pharmaceutical industry.
✔ Deoxygenation of production water in the food and beverage industry.
✔ Injection water in the petrochemical industry to reduce corrosion rates
.
✔ Water for laboratory analysis and precision cleaning applications.
❓Frequently Asked Questions
How does the deoxygenation membrane
work?
It works based on Henry's Law, using
a hydrophobic hollow fiber membrane to create a concentration gradient that drives dissolved oxygen from the water phase into the gas phase.
What is the
difference between Vacuum and Nitrogen mode?
Vacuum mode uses a pump to create negative pressure for
higher efficiency (below 1 μg/L), while Nitrogen mode uses high-purity nitrogen as a sweep gas
to maintain low partial pressure (below 5 μg/L).
What are the water quality requirements for the inlet?
The inlet water quality should meet specific turbidity and filtration standards to ensure membrane longevity.
In which industries is
this equipment commonly used?
It is widely used in semiconductors,
power plants, pharmaceuticals, and the food & beverage industry to prevent oxidation.
Can the system achieve dissolved oxygen levels below
5 ppb?
Yes, by using a two-stage series
process combining both vacuum and nitrogen sweep modes, the system can achieve oxygen levels below 5 ppb.
Is the system
suitable for long-term continuous operation?
Yes, the system
is designed for stable long-term operation with minimal maintenance required for the membrane modules.
