China China Deoxygenation Membrane Equipment Factory - Suppliers of Physical Degassing Technology for Water Treatment Manufacturers, Manufacturer
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 membrane material is selected from hydrophobic polymers such as polypropylene (PP) or polyvinylidene fluoride (PVDF). The pore size ranges from 0.01 to 0.1 micrometers, preventing water penetration while allowing gas molecules to pass freely.
🎛 Operation Modes
A vacuum pump creates a negative pressure environment on the gas phase side, bringing oxygen partial pressure close to zero. Oxygen molecules are continuously discharged. Outlet dissolved oxygen can be reduced to below 1 μg/L.
High-purity nitrogen (≥ 99.999%) is introduced as a sweep gas. It maintains extremely low oxygen partial pressure. Outlet dissolved oxygen can be reduced to below 5 μg/L.
🧱 Equipment Structure & Core Components
- Membrane Contactor Unit: Internally packed with hollow fiber membrane bundles in stainless steel or plastic housing.
- Vacuum/Sweep System: Liquid-ring or rotary vane vacuum pumps, or nitrogen supply lines.
- Control System: Flow control valves, pressure gauges, vacuum indicators, and online dissolved oxygen monitors.
- Configuration: Four-port design (two for liquid, two for gas) with inside-out or outside-in flow paths.
🔄 System Process Flow
Connection: Series connection after RO or EDI modules. RO/EDI permeate is pressurized and sent to the shell side of the membrane.
Advanced Degassing: For requirements below 5 ppb, a two-stage process is used (Stage 1: Vacuum; Stage 2: Nitrogen Sweep + Vacuum).
Water Quality Requirements: Turbidity
🏢 Application Fields
📦 Other Products
Modular Seawater Desalination
Wastewater ZLD System
