1. Case Basic Information
1.1 Company Overview
Hella Water Treatment Equipment Technology Co., Ltd. is a professional provider of ultra-pure water purification components, specializing in electrodeionization (EDI) modules for industrial, laboratory, and electronic applications. With expertise in advanced deionization technology, the company offers compact, high-efficiency EDI modules that deliver ultra-pure water with resistivity up to 18 MΩ·cm. Its products comply with international quality standards and are widely integrated into RO/UF water purification systems, serving industries such as semiconductors, pharmaceuticals, and precision manufacturing. For more EDI solutions, visit [edi].
1.2 Project Background
This project targets ultra-pure water supplementation needs (e.g., laboratory water systems, electronic component cleaning lines, or pharmaceutical production) requiring deep deionization of pre-treated water. The 500L/H EDI module (Model: HL-EDICM-05T) is designed to integrate with existing RO/UF systems, removing residual ions from feed water to produce ultra-pure water. The single-phase power supply (220V) and compact size make it suitable for small-scale installations and system upgrades.
1.3 Feed Water & Target Water Quality Data
Feed Water Requirements (Pre-Treated Water)
| Parameter | Specification |
|---|---|
| Conductivity | <50 μS/cm (optimal: <10 μS/cm) |
| Total Hardness (as CaCO₃) | <1 mg/L (at 90% recovery) |
| Temperature | 5℃-40℃ (optimal: 10℃-35℃) |
| Oxidizers (e.g., Chlorine) | Absent |
| pH | 6.5-8.5 |
| Turbidity | <0.1 NTU |
Target Water Quality (Ultra-Pure Water)
| Parameter | Standard Value | Unit | Application Reference |
|---|---|---|---|
| Resistivity | Up to 18 MΩ·cm | MΩ·cm | Semiconductor/Laboratory |
| Conductivity | <0.06 μS/cm | μS/cm | – |
| Total Dissolved Solids (TDS) | <1 ppm | ppm | – |
| Total Organic Carbon (TOC) | <10 ppb | ppb | – |
| Silica (SiO₂) | <10 ppb | ppb | – |
2. Core Pain Points and Requirements of the Project
2.1 Feed Water Pain Points
- Residual Ions: Pre-treated RO/UF water still contains trace ions that limit water resistivity, failing to meet ultra-pure requirements.
- Hardness Sensitivity: Even low hardness (<1 mg/L) can cause scaling on EDI membranes at high recovery rates.
- Oxidizer Damage: EDI resins and membranes are vulnerable to oxidizers (e.g., chlorine), requiring complete removal from feed water.
- Purity Instability: Fluctuations in feed water quality lead to inconsistent ultra-pure water output.
2.2 Project Operation Requirements
- Production Capacity: 500 L/h of ultra-pure water, compatible with continuous 24/7 operation.
- Water Purity: Resistivity up to 18 MΩ·cm, meeting industrial ultra-pure water standards.
- Recovery Rate: 85-95% to optimize water utilization.
- Power Supply: Single-phase 220V/50Hz for easy integration into existing systems.
- Compact Design: Small footprint (28×32×68cm) for space-constrained installations.
- Durability: Corrosion-resistant materials (SUS304 frame, PVC pipeline) for long-term use.
- Automation: Start-stop control linked to water tank level switch for seamless system integration.
3. Hella Water Customized Solutions
3.1 Module Model and Core Configuration
Hella Water provides the HL-EDICM-05T 500L/H EDI Module, a standalone deionization component designed for integration into existing water purification systems. The detailed configuration is as follows:
| No. | Part Name | Description |
|---|---|---|
| 1 | EDI Core Module | 500L/H deionization module (28×32×68cm, 50KG) with anion/cation exchange membranes and ion-exchange resins |
| 2 | Power Supply System | Power adapter, sensor wiring, and load wiring (220V single-phase) |
| 3 | Control Cabinet | Pressure monitoring, relay control, and digital input module (EL1809) |
| 4 | Piping & Frame | PVC pipeline (corrosion-resistant) + SUS304 frame (stable support) |
| 5 | Interface Components | Standard connectors for easy integration with RO/UF systems |
For more ultra-pure water systems, visit [ultrapure water system].
3.2 Key Technical Parameters of HL-EDICM-05T
| Parameter | Specification |
|---|---|
| Ultra-Pure Water Output | 500 L/h |
| Resistivity | Up to 18 MΩ·cm |
| Recovery Rate | 85-95% |
| Operating Voltage | 220V 50Hz single-phase |
| IP Rating | IP20 |
| Operating Temperature | 5℃-40℃ |
| Operating Pressure | 0.2-0.5 MPa |
| Dimensions | 28×32×68cm |
| Weight | 50KG |
| I/O Modules | Digital Input (EL1809) |
| Control Function | Tank level switch-linked start-stop |
| Design Service Life | 7-10 years (resin regeneration-free) |
3.3 Working Principle and Integration
3.3.1 EDI Deionization Principle
- The module integrates anion-exchange membranes (AEM), cation-exchange membranes (CEM), and ion-exchange resins.
- An electric field is applied to the module: cations pass through CEM to the concentrate stream, while anions pass through AEM to the concentrate stream.
- Ion-exchange resins are continuously regenerated by the electric field, eliminating the need for chemical regeneration and reducing environmental impact.
- Feed water is converted into ultra-pure water (permeate) and concentrated brine (rejected), with the permeate meeting high-resistivity requirements.
3.3.2 System Integration Process
Pre-Treated Water (RO/UF Effluent) → EDI Module (HL-EDICM-05T) → Ultra-Pure Water Storage Tank → Application (Laboratory/Cleaning/Production)→ Concentrate Stream → Discharge/Treatment
For reverse osmosis pre-treatment systems, visit [reverse osmosis].
4. Project Effect Verification
4.1 Ultra-Pure Water Quality Test Results
| Parameter | Feed Water Value | Produced Water Value | Removal Efficiency |
|---|---|---|---|
| Resistivity | 10 MΩ·cm | Up to 18 MΩ·cm | – |
| Conductivity | 10 μS/cm | <0.06 μS/cm | ≥99.4% |
| TDS | 5 ppm | <1 ppm | ≥80.0% |
| Total Hardness | 0.8 mg/L | Not Detected | 100% |
| Silica (SiO₂) | 20 ppb | <10 ppb | ≥50.0% |
4.2 Module Operation Performance
- Purity Stability: Continuous 72-hour operation shows resistivity fluctuation ≤±0.3 MΩ·cm, no ion leakage.
- Integration Flexibility: Seamlessly integrates with existing RO/UF systems; installation completed within 4 hours.
- Energy Efficiency: Low power consumption for electric regeneration, no chemical waste discharge.
- Compactness: Small size (28×32×68cm) fits in standard equipment racks or laboratory corners.
- Durability: SUS304 frame and PVC pipeline show no corrosion after 6-month operation; resin performance remains stable.
- Recovery Efficiency: Recovery rate reaches 92%, optimizing water utilization.
4.3 Compliance and Application
- Standards Compliance: Meets ISO and industrial ultra-pure water quality standards for electronics and pharmaceuticals.
- Case Validation: Successfully integrated into laboratory water systems and small-scale production lines in global markets, with customer satisfaction ≥97%. For industrial water filtration solutions, visit [industrial water filtration].
5. Case Corresponding Product Quotation Description
5.1 Module Quotation (Estimated)
| Item | Model | Qty | Unit Price (USD) | Total Price (USD) | Description |
|---|---|---|---|---|---|
| 500L/H EDI Module | HL-EDICM-05T | 1 | 9,800 | 9,800 | Includes EDI core, power supply, control cabinet, piping, and frame |
5.2 Terms & Conditions (Estimated)
| Term Type | Details |
|---|---|
| Price Inclusions | EDI module, control cabinet, power adapter, and installation accessories |
| Power Supply | 220V 50Hz single-phase (customizable for other voltages) |
| Payment Term | T/T: 50% deposit for production, 50% balance paid before shipment |
| Lead Time | 20 days from receipt of deposit |
| Warranty | 24 months from delivery; free repair/replacement for non-human-induced failures |
| Installation & Maintenance | Free online technical support for integration; on-site guidance available at additional cost |
| Customization | Available for higher capacity or specific interface requirements (price/production time varies) |
5.3 Annual Operating Cost (Estimated)
| Item | Specification | Annual Cost (USD) |
|---|---|---|
| Electricity Consumption | 500W × 8,000 hours/year × USD0.15/kWh | ~600 |
| Routine Inspection & Calibration | Professional maintenance service | ~300 |
| Total Annual Operating Cost | – | ~900 |
Note: No consumables required due to continuous resin regeneration by the electric field.
6. Common Questions (FAQ)
6.1 Installation and Integration
Q1: Can the EDI module be integrated with any RO system?A1: Yes. The module is designed with standard interfaces, compatible with most RO/UF systems as long as the feed water meets the conductivity, hardness, and oxidizer requirements.
Q2: What installation space is required?A2: The module dimensions are 28×32×68cm (50KG), requiring only a flat surface near the pre-treatment system and storage tank.
6.2 Operation and Maintenance
Q1: Does the module require chemical regeneration?A1: No. The EDI module uses an electric field to continuously regenerate ion-exchange resins, eliminating the need for chemical regeneration and reducing operational complexity.
Q2: How to monitor the module’s performance?A2: The integrated control cabinet includes pressure monitoring; we recommend adding an optional online resistivity meter to track water purity in real time.
6.3 Warranty and Support
Q1: What is covered under the 24-month warranty?A1: Manufacturing defects in the EDI core, control cabinet, and power supply. Damage caused by improper installation or feed water non-compliance is excluded.
Q2: What should I do if resistivity drops below the required level?A2: Check feed water quality (conductivity, hardness) first; clean the module’s inlet filter if clogged; contact technical support for resin or membrane inspection if issues persist.
6.4 Performance and Compatibility
Q1: What is the impact of temperature on resistivity?A1: Optimal temperature is 10℃-35℃. Below 5℃, resistivity may decrease slightly; above 40℃, the module’s service life may be shortened.
Q2: Can the module operate intermittently?A2: Yes. The tank level switch-linked start-stop function allows intermittent operation, with no adverse impact on module performance.
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