AquaGRID Tutorial: A Practical Guide for Toray’s Reverse Osmosis Design Software

AquaGRID, a powerful upgrade to TorayDS (Toray RO Design Software), is one of the leading industrial water treatment design software tools. It uses advanced mathematical algorithms to simulate Toray’s specific membrane models with high accuracy although engineers can easily get overwhelmed figuring out how to start a project and link components correctly.

DaneshLine’s step-by-step AquaGRID tutorial covers everything from installation to practical case studies, focused on navigating its flexible workspace, linking components correctly, and interpreting the simulation reports.

Mastering the Core Features: AquaGRID Capabilities

System Architecture & Layout

• Complex Array Configurations: Design advanced multi-stage and multi-pass RO systems for large industrial projects.
• Interactive Workspace: Adjust layouts in real-time and instantly see the impact on membrane flux and hydraulics.
• Membrane Selection: Choose the right Toray membrane family for your specific feed water:

Membrane Family	Primary Application	Characteristics
TM700	Standard Brackish Water	High salt rejection; robust performance for standard industrial feeds.
TMG / TMH	Low-Energy Brackish Water	High permeability and ultra-low feed pressure to minimize OPEX.
TML	Low Fouling Brackish Water	Specialized spacers to resist fouling in challenging waters (e.g., wastewater).
TM800	Seawater Desalination	Extreme pressure tolerance and maximum salt rejection for ocean feeds.

Feed Water & Environmental Profiling

• Real-World Data: Input precise environmental conditions (like seasonal temperatures and SDI) to model worst-case scenarios.
• Automated Ion Balancing: Input your lab data, and the software automatically detects and resolves cation/anion charge imbalances.

Simulation & Performance Analysis

• Algorithmic Modeling: Use advanced algorithms for highly accurate predictions of system recovery, feed pressure, and permeate quality.
• Automated Diagnostics: The software analyzes membrane performance and highlights warnings to help you troubleshoot quickly.
• Energy Tracking: Calculate specific energy consumption (kWh/m³) and factor in pump efficiency to accurately estimate plant OPEX.

DaneshLine Tip: Temperature is your most critical variable. Always simulate the lowest winter temperature to properly size your high-pressure pump, and the highest summer temperature to verify worst-case permeate quality.

Case Study 1: Designing a Surface Water RO System via AquaGRID

Let’s put our mastery of the navigation to work by stepping through a concrete engineering project.

The Goal: We are setting up a single-pass, two-stage RO simulation. This time, our source is surface water (with an SDI < 3) carrying a Total Dissolved Solids (TDS) load of roughly 2,393 mg/L. Our target is to produce a solid 74 m³/h of pure product water while running the system at a 75% recovery rate.

Designer’s Note: This case study focuses exclusively on software navigation, flux balancing, and troubleshooting warnings inside the WAVE interface. If you are new to the core engineering calculations behind sizing an array such as manually determining your required number of pressure vessels, membrane elements, and staging ratios, it is highly recommended to read the foundational guide on How to Design a Reverse Osmosis Plant in 10 Easy Steps before proceeding. Once you have your baseline physical architecture mapped out, return here to execute the digital simulation.

Step 1: Initial Software Setup

To begin your project, launch the software and configure your foundational settings.

• 1. Select your preferred SI Unit from the setup menu.
• 2. Click the Apply button to confirm.

Step 2: Drawing the System Architecture

Move into the workspace to visually build your RO system.

• 3. Select, drag, and drop the essential components of the RO system from the left-hand menu (Feed, Pump, RO Unit, Chemical Dosing, Product, Discharge).
• 4. Connect the components to each other using the flow lines to establish the system’s path.

Step 3: Configuring the Feed Water

Once the physical layout is drawn, you must define the characteristics of your source water.

• 5. Switch the workspace from Drawing mode to Data Input mode using the top-right toggle.
• 6. Double-click on the Feed1 icon to open up the Feed Setting page.

Step 4: Entering Water Analysis Data

Input the precise chemistry of your surface water to ensure accurate simulation results.

• 7. Choose Brackish Surface water from the Water Type dropdown.
• 8. Set the baseline Temperature and pH.
• 9. Enter your complete Feed Water Analysis (cation and anion concentrations).
• 10. Set the Total TDS to roughly 2,393 mg/L (as per the case study parameters) and confirm the remaining temperature/pH settings.

Step 5: Setting Target Flow and Recovery

Define the operational goals for your RO plant.

• 11. On the main interface, set the system Recovery to 75%.
• 12. Set the target Product Flow Rate to 74 m³/h.

Step 6: Sizing the RO Array

Specify the membrane elements and pressure vessels for your two-stage setup.

• 13. Click Add Stage to create a two-stage system.
• 14. Choose your specific Membrane type from the dropdown menu (e.g., Toray TM820V-400).
• 15. Set the appropriate number of Vessels and elements for each stage based on your manual sizing calculations.

Step 7: Initial Execution and Review

Run the simulation to test your baseline design against the software’s parameters.

• 16. Click the green Execute (E) button in the top toolbar to run the calculation.
• 17. Review the preliminary results and any generated warnings (such as high flux alerts) at the bottom of the screen.

Step 8: Troubleshooting and Parameter Adjustment

If your initial run generates warnings, you must balance the flux by adjusting the array.

• 18. Return to the RO/NF Setting window to adjust design parameters. In this case, modify the number of vessels in Stage 1 and Stage 2 to better distribute the hydraulic load.

Step 9: Final Execution and Verification

Confirm that your adjustments have resolved any design warnings and met the project goals.

• 19. Execute (E) the modified design.
• 20. Review the final results of your RO system to verify that the average flux is balanced and the system safely produces 74 m³/h at a 75% recovery rate.

Case Study 2: Optimizing a Brackish RO System in AquaGRID

The Design Challenge: The Flux Imbalance Trap

The Scenario: Imagine you are tasked with designing a brackish water RO system to produce 50 m³/h of clean water from a local well. You set up a classic two-stage system aiming for a solid 75% recovery rate, and you pack it with high-rejection TM700 series membranes (like the TM720D-400) to ensure top-tier water quality.

The Problem: You hit “Simulate,” but AquaGRID throws a critical warning regarding element flux limits.

When you dig into the localized performance data, you spot a massive imbalance. Your Stage 1 elements are getting crushed under a heavy workload of 22.5 LMH, while your Stage 2 elements are barely breaking a sweat at just 9 LMH. If you commission the physical plant with this design, those front-end membranes are going to suffer from rapid colloidal fouling and premature failure.

Your Task: How do you fix this severe flux imbalance and save your lead elements without drastically increasing your energy consumption?

TorayDS vs. AquaGRID: Understanding the Evolution

While this tutorial focuses on AquaGRID, engineers often encounter legacy projects built in TorayDS. Understanding the key differences between Toray’s legacy program and its modern replacement will help you manage your workflows effectively. If you’re also weighing AquaGRID against platforms from other manufacturers, see our comparison of RO design software platforms.

Feature	TorayDS (Legacy)	AquaGRID (Modern)
Workflow & Interface	Rigid, step-by-step sequential tabs	Open, highly flexible interactive workspace
System Architecture	Standard layouts; difficult to customize	Easily handles complex multi-pass and hybrid designs
Visual Layout	Static data entry screens	Dynamic graphical representation of the system
Calculation Engine	Traditional mathematical modeling	Advanced, high-efficiency algorithmic processing
Learning Curve	Basic; easy for quick, simple estimates	Steeper initially, but offers complete engineering freedom

Although TorayDS was historically sufficient for basic projections, transitioning to AquaGRID is an absolute necessity for modern industrial projects requiring complex layouts, stream blending, or precise membrane hybridization.

FAQ: AquaGRID Operations