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Water treatment

Two-Pass RO System

Two sequential RO passes for applications requiring further polishing of first-pass permeate.

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Conceptual 3D equipment render of Two-Pass RO System
Two-Pass RO System — conceptual 3D equipment render. Final configuration follows the approved project design.

3D EQUIPMENT VIEW

Two-Pass RO System

Explore the equipment arrangement, then read how the system works and review its technical drawings.

Description & drawings Browse equipment renders

Conceptual equipment render. Final dimensions and configuration follow the approved project design.

PRODUCT DESCRIPTION & TECHNICAL DOCUMENTS

How two-pass ro system fits your process.

Operating principle

Two sequential RO passes for applications requiring further polishing of first-pass permeate.

Pressure drives water through a semipermeable membrane. The feed separates into permeate and a concentrate stream; recovery and membrane arrangement are established from water chemistry and a membrane projection.

Engineering checks

  • Feed ionic analysis, temperature, SDI and turbidity
  • Scaling potential at proposed recovery
  • Element flux, crossflow and pressure limits
  • Permeate quality and concentrate-management route

Configuration & equipment

  1. Feed conditioning and cartridge filtration
  2. High-pressure feed pump
  3. Membrane pressure housings
  4. Spiral-wound membrane elements
  5. Permeate and concentrate manifolds
  6. Pressure, conductivity and flow instruments
  7. Cleaning connections and control panel

Configuration options are reviewed against the project duty. Supply quantities and final scope are defined in the approved proposal.

Process / operating itemEngineering requirement
Process review 1Pass 1 permeate feeds pass 2. Interstage conditioning depends on the final water specification.
Process review 2Each pass has a concentrate outlet; any recycle is assessed separately.
Operating and maintenanceTrend normalized permeate flow and salt passage. Inspect differential pressure and cartridge loading. Use approved cleaning chemistry and membrane preservation.
DocumentationProject-specific datasheet, PFD, P&ID, equipment GA, electrical load list and O&M documentation as agreed.

PDF & DRAWING DOWNLOADS

Keep the technical references.

Read the water treatment & ro brochure, or download the process and arrangement drawings below.

Open brochure (PDF) Download PDFProcess drawing ↓Equipment drawing ↓

PROCESS FLOW DIAGRAM

Two-pass reverse osmosis

Download drawing (SVG)
Feed-water pretreatment → RO pass 1 → Interstage conditioning → RO pass 2 → Final permeate collection
Main process Utility / chemical Residual stream Recovery / recycle

Swipe the diagram to view every stage.

Design notes
  • Pass 1 permeate feeds pass 2. Interstage conditioning depends on the final water specification.
  • Each pass has a concentrate outlet; any recycle is assessed separately.

Indicative process overview. Equipment tags identify functional blocks only. Final PFDs, P&IDs, duties, sizes, valves and instruments are developed from the approved project design basis.

EQUIPMENT DRAWINGS

2D layout & exploded component views.

Review the functional arrangement and the components that make up the equipment.

Two-Pass RO System 2D functional arrangement

Reference drawings are not to scale. Project dimensions, equipment duty, pipe sizes and materials are specified after design review.

Download 2D SVG
Two-Pass RO System component decomposition reference
Two-Pass RO System — component decomposition

EXPLODED VIEW

Understand the assembly.

The separated component schematic identifies the main equipment groups. Vendor-specific internal geometry is established during detailed engineering.

  1. Feed conditioning and cartridge filtration
  2. High-pressure feed pump
  3. Membrane pressure housings
  4. Spiral-wound membrane elements
  5. Permeate and concentrate manifolds
  6. Pressure, conductivity and flow instruments
  7. Cleaning connections and control panel
Open calculation software Return to catalogue

EXPLORE YOUR DESIGN BASIS

See how recovery changes the water balance.

Move the recovery slider to compare permeate and reject at your entered feed flow.

Illustrative arithmetic using your inputs. These values are not measured plant results or a performance promise.

Permeate
7.00 m³/h
Reject
3.00 m³/h

Qpermeate = Qfeed × recovery; Qreject = Qfeed − Qpermeate. Feasible recovery needs chemistry and membrane checks.

Open detailed calculator →

YOUR PROJECT, YOUR DESIGN BASIS

Configure your requirement.

Enter what you know. Leave unavailable values blank for engineering review.

Process inputs

Required flow, operating hours, feed source, full water analysis, temperature, target product quality, recovery target, pretreatment, cleaning philosophy, automation, MOC and utility constraints.

Technologies you would like to discuss

Select candidates for review. This does not establish a treatment sequence.

Equipment & execution preferences

Materials are reviewed separately for each component against the fluid chemistry, temperature and service conditions. Preferences are subject to technical suitability and the agreed proposal.

No details are sent until you choose a sending channel.

A solution shaped by your requirements.

Two sequential RO passes for applications requiring further polishing of first-pass permeate. The process train is selected from feed-water analysis and the final water specification. Pretreatment protects downstream treatment, while monitoring and cleaning provisions support reliable operation.

What we review

  • Required product flow and operating hours
  • Water source and complete laboratory analysis
  • Feed temperature, pH and fouling indicators
  • Target water quality and intended use
  • Utility availability and plant footprint
  • Pretreatment and cleaning requirements

Capacity, materials, operating conditions and performance are specified after review of your project data. Product images are conceptual visualizations.

From design to operation

Our scope can cover process and mechanical engineering, manufacturing, supply, installation, commissioning and ongoing support. The final proposal clearly defines supplier scope, client interfaces, optional items and exclusions.

APPLICATIONS

Connect equipment to your industry.

Review the application, data requirements and candidate treatment options.

Pharmaceutical & Life SciencesElectronics & High-Purity Manufacturing

EXPLORE FURTHER

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