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 electrodeionization (EDI) modules for industrial, commercial, and laboratory applications. With expertise in advanced deionization technology, the company offers integrated EDI systems that deliver high-purity water with resistivity up to 18 MΩ·cm. Its products comply with international quality standards and are widely used in electronics manufacturing, pharmaceuticals, laboratories, and power generation. For more EDI solutions, visit [edi].
1.2 Project Background
This project targets medium-scale ultra-pure water needs (e.g., mid-sized production lines, research institutions, or commercial facilities) requiring deep deionization of pre-treated water. The 16m³/H EDI module (Model: HL-EDICM-16T) consists of 4 integrated purification modules (3×5m³/H + 1×1m³/H) and is equipped with a precise filter, controller cabinet, and SUS304 frame. The single-phase power supply (220V/50Hz) and compact design make it suitable for both industrial workshops and laboratory buildings.
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/Pharmaceuticals |
| 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%).
- Particulate Contamination: Fine particles in feed water may foul EDI membranes, requiring additional precision filtration.
- Oxidizer Damage: EDI resins and membranes are vulnerable to oxidizers (e.g., chlorine), demanding complete removal from feed water.
2.2 Project Operation Requirements
- Production Capacity: 16m³/h of ultra-pure water, supporting continuous 24/7 operation.
- Water Purity: Resistivity up to 18 MΩ·cm, meeting strict quality standards for critical 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: Dimensions 150×100×160cm (220KG) 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.
- Pre-Filtration: Built-in precision filter to protect EDI membranes from particulate fouling.
3. Hella Water Customized Solutions
3.1 Module Model and Core Configuration
Hella Water provides the HL-EDICM-16T 16m³/H EDI Module System, integrating 4 purification modules, a precision filter, and a centralized controller cabinet. The detailed configuration is as follows:
| No. | Part Name | Description |
|---|---|---|
| 1 | EDI Core Modules | 3×5m³/H + 1×1m³/H purification modules (each with anion/cation exchange membranes and ion-exchange resins) |
| 2 | Precision Filter | 40” PP filter (removes fine particles >1μm to protect EDI membranes) |
| 3 | Power Supply System | Power adapter, sensor wiring, and load wiring (220V single-phase) |
| 4 | Central Controller Cabinet | Pressure monitoring, relay control, and digital input module (EL1809) |
| 5 | Piping & Frame | PVC pipeline (corrosion-resistant) + SUS304 frame (stable support, 220KG) |
| 6 | Safety Components | Overload protection, low water level shutdown, and pressure relief valve |
For more ultra-pure water systems, visit [ultrapure water system].
3.2 Key Technical Parameters of HL-EDICM-16T
| Parameter | Specification |
|---|---|
| Ultra-Pure Water Output | 16m³/h (3×5m³/h + 1×1m³/h modules) |
| 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 |
| Precision Filter | 40” PP filter, 1μm filtration accuracy |
| Dimensions | 150×100×160cm |
| Weight | 220KG |
| I/O Modules | Digital Input (EL1809) |
| Control Functions | Tank level switch-linked start-stop, pressure monitoring, fault alarm |
| 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
- Each EDI module integrates anion-exchange membranes (AEM), cation-exchange membranes (CEM), and ion-exchange resins.
- An electric field is applied to each 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.
- The combined configuration of 3×5m³/H and 1×1m³/H modules ensures flexible flow adjustment and redundancy—partial module shutdown for maintenance does not interrupt overall operation.
3.3.2 Integration Process
Pre-Treated Water (RO/UF Effluent) → Precision Filter (40” PP) → EDI Module System (3×5m³/H + 1×1m³/H) → 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) | 18 ppb | <10 ppb | ≥44.4% |
4.2 System Operation Performance
- Purity Stability: Continuous 72-hour operation shows resistivity fluctuation ≤±0.3 MΩ·cm, no ion leakage or quality degradation.
- Flow Flexibility: Modular configuration allows flow adjustment between 1-16m³/h to match varying application needs.
- Pre-Filtration Effectiveness: 40” PP filter reduces feed water turbidity to <0.05 NTU, effectively protecting EDI membranes from fouling.
- Energy Efficiency: Low power consumption for electric regeneration; no chemical waste discharge, aligning with environmental requirements.
- Compactness: Dimensions 150×100×160cm fit in standard industrial workshops or laboratory basements; installation completed within 1 day.
- Durability: SUS304 frame and PVC pipeline withstand long-term use; no corrosion or structural deformation after 6-month operation.
4.3 Compliance and Application
- Standards Compliance: Meets ISO, SEMI, and pharmaceutical GMP standards for ultra-pure water.
- Case Validation: Successfully deployed in mid-sized electronics factories, pharmaceutical labs, and research institutions globally, with customer satisfaction ≥97%. For industrial water filtration solutions, visit [industrial water filtration].
5. Case Corresponding Product Quotation Description
5.1 System Quotation (Estimated)
| Item | Model | Qty | Unit Price (USD) | Total Price (USD) | Description |
|---|---|---|---|---|---|
| 16m³/H EDI Module System | HL-EDICM-16T | 1 | 115,000 | 115,000 | Includes 3×5m³/H + 1×1m³/H EDI modules, 40” PP filter, controller cabinet, piping, and SUS304 frame |
5.2 Terms & Conditions (Estimated)
| Term Type | Details |
|---|---|
| Price Inclusions | Complete EDI system, precision filter, controller cabinet, 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 | 28 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 installation and training 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 | 3.5kW × 8,000 hours/year × USD0.15/kWh | ~4,200 | |
| Precision Filter Elements | 40” PP filter (1μm) | 300/piece × 4 pieces | 1,200 |
| Routine Inspection & Calibration | Professional maintenance service | ~1,500 | |
| Total Annual Operating Cost | – | ~6,900 |
Note: No consumables required for EDI modules due to continuous resin regeneration by the electric field.
6. Common Questions (FAQ)
6.1 Installation and Integration
Q1: Can the system be integrated with existing RO/UF pre-treatment?A1: Yes. The system is designed with standard interfaces, compatible with most RO/UF systems as long as the feed water meets the specified conductivity, hardness, and oxidizer requirements.
Q2: What space and installation conditions are required?A2: The system requires a flat surface of ≥2×1.5m (for placement and operation) and a 220V single-phase power supply. No complex civil engineering is needed—installation involves connecting pipelines and power.
6.2 Operation and Maintenance
Q1: Does the system require chemical regeneration?A1: No. The EDI modules use electric field regeneration of ion-exchange resins, eliminating the need for chemical agents and reducing operational complexity.
Q2: How often should the precision filter be replaced?A2: The 40” PP filter element should be replaced every 3-6 months, depending on feed water turbidity. Replacement is simple and can be completed on-site without professional tools.
6.3 Warranty and Support
Q1: What is covered under the 24-month warranty?A1: Manufacturing defects in EDI modules, controller cabinet, precision filter, and power supply. Consumables (filter elements) and damage from improper use are excluded.
Q2: What should I do if the system alarms for high pressure?A2: High-pressure alarms typically result from a clogged precision filter or EDI membrane fouling. Replace the filter element first; if the alarm persists, contact technical support for membrane cleaning guidance.
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 system triggers overheating protection to prevent module damage.
Q2: Can the system 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.
Would you like me to help you create a detailed operation and maintenance manual for this EDI system, including step-by-step startup/shutdown procedures and troubleshooting flowcharts?
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