---
title: "Reverse Osmosis Membrane"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:REVERSE_OSMOSIS_MEMBRANE"
  data_integrity_hash: "20c87cfa1ad0d03bd17ede4804320b08"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:REVERSE_OSMOSIS_MEMBRANE"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/reverse-osmosis-membrane.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/reverse-osmosis-membrane"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "15-60 bar (1.5-6.0 MPa) at 25°C feed temperature"
    unit: "inches"
engineering_limits:
  max_safe_operating_point:
    value: 83
    unit: "bar"
    consequence: "Polyamide layer hydrolysis accelerates exponentially above 45°C, reducing tensile strength by 50% at 60°C; pressure-induced delamination occurs when transmembrane pressure exceeds 83 bar, causing separation of active layer from polysulfone support"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Chlorine concentration exceeding 0.1 ppm in feed water"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Install activated carbon pre-filter with 99.9% chlorine removal efficiency and redox potential monitoring at &lt;200 mV"
  - node_2:
      trigger: "Silica scaling when Langelier Saturation Index exceeds +0.5"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Implement antiscalant injection at 3-5 mg/L dosage with continuous SDI15 monitoring maintained below 3.0"
bom_nodes:
  membrane-surface:
    type: "component"
    urn: "URN:CNFX:ME:MEMBRANE_SURFACE"
    interface_type: "physical-logic-coupled"
  support-layer:
    type: "component"
    urn: "URN:CNFX:ME:SUPPORT_LAYER"
    interface_type: "physical-logic-coupled"
  backing-material:
    type: "component"
    urn: "URN:CNFX:ME:BACKING_MATERIAL"
    interface_type: "physical-logic-coupled"
  permeate-carrier:
    type: "component"
    urn: "URN:CNFX:ME:PERMEATE_CARRIER"
    interface_type: "physical-logic-coupled"
  feed-spacer:
    type: "component"
    urn: "URN:CNFX:ME:FEED_SPACER"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/reverse-osmosis-membrane.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "9e989daedcbc1d7afba3ab15f28885080b375f587d3894ad8b90aa32cc951c5b"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Reverse Osmosis Membrane

## 1. Technical Definition
A semi-permeable membrane used in reverse osmosis systems to remove dissolved solids, ions, and contaminants from water by applying pressure to overcome osmotic pressure.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **15-60 bar (1.5-6.0 MPa) at 25°C feed temperature**. Failure boundary: **Membrane rupture occurs at 83 bar (8.3 MPa) differential pressure or 45°C continuous operation temperature**, Mechanism: **Polyamide layer hydrolysis accelerates exponentially above 45°C, reducing tensile strength by 50% at 60°C; pressure-induced delamination occurs when transmembrane pressure exceeds 83 bar, causing separation of active layer from polysulfone support**.

### 2.1 Analytical Physics Model
Governed by the **Darcy-Weisbach Pressure Drop**:

> **Primary Equation**: $\Delta P = f \cdot \frac{L}{D} \cdot \frac{\rho v^2}{2}$  
> **Engineering Impact**: Critical for sizing CIP (Clean-In-Place) pump heads.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| f | Friction Factor | Engineering Constant |
| L | Pipe Length | Engineering Constant |
| v | Velocity | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Chlorine concentration exceeding 0.1 ppm in feed water | 8 | Polyamide active layer oxidation causing 90% salt rejection loss within 72 hours | Install activated carbon pre-filter with 99.9% chlorine removal efficiency and redox potential monitoring at &lt;200 mV |
| Silica scaling when Langelier Saturation Index exceeds +0.5 | 8 | Amorphous silica deposition reducing permeate flux from 25 LMH to &lt;5 LMH | Implement antiscalant injection at 3-5 mg/L dosage with continuous SDI15 monitoring maintained below 3.0 |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | inches | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **High-Pressure Pump**, **Pre-Filtration System**, **Membrane Housing Assembly**  
**Downstream Applications**: Potable Water, Industrial Process Water, Pharmaceutical-Grade Water  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What is the typical lifespan of an industrial reverse osmosis membrane?
**A**: Industrial RO membranes typically last 3-5 years with proper maintenance, depending on feed water quality, operating pressure, and cleaning frequency.

### Q: How does the polyamide thin-film composite material improve membrane performance?
**A**: Polyamide thin-film composite provides superior salt rejection (up to 99.8%), higher flux rates, and better chemical resistance compared to traditional cellulose acetate membranes, making it ideal for industrial applications.

### Q: What maintenance is required for reverse osmosis membranes in manufacturing equipment?
**A**: Regular maintenance includes monitoring pressure differentials, conducting periodic clean-in-place (CIP) procedures with approved chemicals, replacing pre-filters, and sanitizing to prevent biofouling and scaling.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Reverse Osmosis Membrane](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/reverse-osmosis-membrane)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **5** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: REVERSE_OSMOSIS_MEMBRANE | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 3ffbfebe
