1. Case Basic Information
1.1 Company Overview
Hella Water Treatment Equipment Technology Co., Ltd. is a professional provider of medium-scale ultra-pure water solutions, specializing in compact electrodeionization (EDI) modules for commercial, laboratory, and light industrial applications. With expertise in advanced deionization technology, the company offers 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 electronics, pharmaceuticals, and research laboratories. For more EDI solutions, visit [edi].
1.2 Project Background
This project targets medium-scale ultra-pure water needs (e.g., small production lines, research labs, or medical facilities) requiring deep deionization of pre-treated water. The 2000L/H EDI module (Model: HL-EDICM-2T) features a compact design (55×32×60cm, 15KG) and single-phase power supply (220V/50Hz), making it suitable for space-constrained installations. The module is equipped with a controller cabinet for pressure monitoring and automatic control, ensuring stable ultra-pure water output for critical applications.
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 | Electronics/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 (85-95%).
- 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, affecting application reliability.
2.2 Project Operation Requirements
- Production Capacity: 2000 L/h (2 m³/h) of ultra-pure water, supporting continuous 24/7 operation.
- Water Purity: Resistivity up to 18 MΩ·cm, meeting strict quality standards for sensitive applications.
- Recovery Rate: 85-95% to optimize water utilization and reduce waste.
- Power Supply: Single-phase 220V/50Hz for easy integration into existing power systems.
- Compact Design: Small footprint (55×32×60cm) and light weight (15KG) for space-constrained installations.
- Durability: Corrosion-resistant materials (SUS304 frame, PVC pipeline) for long-term use.
- Automation: Start-stop control linked to tank level switch; real-time pressure monitoring and fault alarms.
3. Hella Water Customized Solutions
3.1 Module Model and Core Configuration
Hella Water provides the HL-EDICM-2T 2000L/H EDI Module, a compact, integrated deionization component designed for seamless integration into existing water purification systems. The detailed configuration is as follows:
| No. | Part Name | Description |
|---|---|---|
| 1 | EDI Core Module | 200-250L sub-module (8×parallel configuration) 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, lightweight support) |
| 5 | Interface Components | Standard quick-connect fittings 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-2T
| Parameter | Specification |
|---|---|
| Ultra-Pure Water Output | 2000 L/h (2 m³/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 | 55×32×60cm |
| Weight | 15KG |
| I/O Modules | Digital Input (EL1809) |
| Control Functions | Tank level switch-linked start-stop, pressure monitoring |
| Frame Material | SUS304 |
| Piping Material | PVC |
| Design Service Life | 7-10 years (resin regeneration-free) |
3.3 Working Principle and System Integration
3.3.1 EDI Deionization Principle
- The EDI module integrates 8 parallel 200-250L sub-modules, each containing 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 Integration Process
Pre-Treated Water (RO/UF Effluent) → EDI Module (HL-EDICM-2T) → Ultra-Pure Water Storage Tank → Application (Production/Laboratory)→ 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) | 16 ppb | <10 ppb | ≥37.5% |
4.2 Module Operation Performance
- Purity Stability: Continuous 72-hour operation shows resistivity fluctuation ≤±0.3 MΩ·cm, no ion leakage or quality degradation.
- Compactness: Small dimensions (55×32×60cm) and light weight (15KG) allow installation on laboratory benches or in small equipment rooms; setup completed within 2 hours.
- Energy Efficiency: Low power consumption for electric regeneration; no chemical waste discharge, aligning with green operation requirements.
- Integration Flexibility: Standard quick-connect fittings enable seamless connection to most RO/UF systems without additional adapters.
- Durability: SUS304 frame and PVC pipeline withstand daily use; no corrosion or structural issues after 6-month operation.
- Recovery Efficiency: Recovery rate reaches 92%, optimizing water utilization for cost savings.
4.3 Compliance and Application
- Standards Compliance: Meets ISO and laboratory/industrial ultra-pure water quality standards.
- Case Validation: Successfully integrated into small production lines, research labs, and medical facilities globally, 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 |
|---|---|---|---|---|---|
| 2000L/H EDI Module | HL-EDICM-2T | 1 | 6,800 | 6,800 | Includes EDI core, power supply, control cabinet, piping, and SUS304 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 | 18 days from receipt of deposit |
| Warranty | 24 months from delivery; free repair/replacement for non-human-induced failures |
| Installation & Maintenance | Free online technical support; on-site guidance available at additional cost |
| Customization | Available for flow capacity adjustment or specific interface requirements (price/production time varies) |
5.3 Annual Operating Cost (Estimated)
| Item | Specification | Annual Cost (USD) |
|---|---|---|
| Electricity Consumption | 1.2kW × 8,000 hours/year × USD0.15/kWh | ~1,440 |
| Routine Inspection & Calibration | Professional maintenance service | ~500 |
| Total Annual Operating Cost | – | ~1,940 |
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 module be used with any RO system?A1: Yes. The module is compatible with most RO/UF systems as long as the feed water meets the specified conductivity, hardness, and oxidizer requirements. Standard quick-connect fittings simplify integration.
Q2: What space is required for installation?A2: The module dimensions are 55×32×60cm, requiring only a flat surface of ≥0.5×0.3m—ideal for laboratory benches or small equipment closets.
6.2 Operation and Maintenance
Q1: Does the module require chemical regeneration?A1: No. The EDI module uses electric field regeneration of ion-exchange resins, eliminating the need for chemical agents 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 (sold separately) 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 from improper installation or non-compliant feed water is excluded.
Q2: What should I do if resistivity drops below the required level?A2: Check feed water quality (conductivity, hardness, oxidizers) first; inspect pipeline connections for leaks; contact technical support for module performance testing 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—avoid operating in extreme temperatures.
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 or resin lifespan.
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