1. Case Basic Information
1.1 Company Overview
Hella Water Treatment Equipment Technology Co., Ltd. is a leading provider of integrated containerized seawater desalination and washdown solutions, specializing in offshore, coastal, and industrial applications. With expertise in reverse osmosis (RO) desalination and high-pressure cleaning technology, the company offers explosion-proof, skid-mounted systems that combine desalination, heating, and cleaning functions. Its products comply with international standards (DNV 2.7-1, ATEX Zone 2) and are deployed globally for offshore platforms, coastal projects, and emergency cleaning needs. For more containerized desalination solutions, visit [containerized machine].
1.2 Project Background
This project targets offshore or coastal cleaning and fresh water supply needs (e.g., offshore oil platforms, coastal industrial facilities) by integrating seawater desalination, electric heating, and high-pressure washdown functions. The 20m³/day containerized system (10ft ISO container) converts seawater into fresh water (0.8m³/h) via RO desalination, heats it to 60℃, and provides 400bar high-pressure cleaning. The explosion-proof design ensures safety in hazardous environments, while the integrated generator guarantees independent power supply.
1.3 Raw Water & Target Water Quality Data
Raw Water Quality (Seawater)
| Parameter | Value Range | Unit |
|---|---|---|
| Total Dissolved Solids (TDS) | 32,000-35,000 | mg/L |
| Turbidity | ≤5 NTU | NTU |
| pH | 7.5-8.5 | – |
| Residual Chlorine | <0.1 mg/L | mg/L |
| SDI | <5 | – |
| COD | <10 mg/L | mg/L |
Target Water Quality (Desalinated Water)
| Parameter | Standard Value | Unit | Compliance Reference |
|---|---|---|---|
| TDS | ≤500 mg/L | mg/L | WHO Drinking Water Standard |
| Desalination Rate | ≥99.5% | – | – |
| Turbidity | ≤0.1 NTU | NTU | – |
| pH | 6.5-8.5 | – | – |
| Bacteria Count | Not Detected | CFU/mL | – |
Washdown System Parameters
| Parameter | Specification |
|---|---|
| Operating Pressure | 400 bar |
| Flow Rate | 20 L/min |
| Heating Temperature | Up to 60℃ |
| Insulated Water Tank | 300 L |
| Heating Power | ≤60 kW (electric heating) |
2. Core Pain Points and Requirements of the Project
2.1 Raw Water & Application Pain Points
- High Seawater Salinity: TDS (32,000-35,000 mg/L) requires efficient desalination to produce usable fresh water.
- Hazardous Environment: Offshore/industrial sites require explosion-proof (ATEX Zone 2) and corrosion-resistant equipment.
- Independent Operation: Lack of grid power demands an integrated generator for self-sufficiency.
- Cleaning Needs: High-pressure, heated water is required for equipment cleaning in harsh marine environments.
- Space Limitations: Offshore platforms need compact, containerized systems to save space.
2.2 Project Operation Requirements
- Desalination Capacity: 20m³/day (0.8m³/h) of fresh water, with 35-50% system recovery rate.
- Washdown Performance: 400bar pressure, 20 L/min flow rate, 60℃ heating for effective cleaning.
- Safety & Explosion-Proof: ATEX Zone 2 certification, explosion-proof generator, and safety protections (leakage, overheating, overvoltage).
- Automation Level: Fully automatic control with manual backup; automatic backwash and membrane protection.
- Compact Design: 10ft ISO container (2438×2438×2400mm) for easy transportation and installation.
- Durability: Corrosion-resistant materials (SS316L, FRP, UPVC) for seawater exposure.
- Power Supply: Integrated 95KW/49KVA silent generator for independent operation.
3. Hella Water Customized Solutions
3.1 System Model and Core Configuration
Hella Water provides the HLDES-1T Containerized Seawater Desalination & Washdown System, integrating desalination, heating, cleaning, and power supply in a 10ft ISO container. The detailed configuration is as follows:
| No. | Part Name | Description |
|---|---|---|
| 1 | Container & Frame | 10ft ISO container (DNV 2.7-1 certified, offshore coating), SS316L frame |
| 2 | Seawater Desalination System | Seawater intake pump (SS316L, 4m³/h, 40m head) + 2×FRP multi-media filters (quartz sand 150KG + activated carbon 50KG) + anti-scaling dosing system (100L PE tank) + 5μm precision filter + high-pressure pump (3m³/h, 550m head) + 2×8040-type RO membranes (99.5% desalination rate) + UV sterilization |
| 3 | Heating System | 300L insulated water tank + 60kW electric heater (max temperature 60℃) |
| 4 | Washdown System | High-pressure pump (400bar, 20 L/min) + 30m high-pressure hose reel + spray gun/rod |
| 5 | Power Supply | 95KW/49KVA silent generator (standby 125KW/61KVA), explosion-proof design |
| 6 | Control & Safety System | PLC control cabinet (auto/manual mode) + safety protections (leakage, overheating, overvoltage, low water level) + online monitoring (pressure, flow, temperature) |
| 7 | Piping & Valves | Low-pressure UPVC pipes + high-pressure hoses + SS316L valves |
For more reverse osmosis solutions, visit [reverse osmosis].
3.2 Key Technical Parameters of HLDES-1T
| Parameter | Specification |
|---|---|
| Desalination Capacity | 20m³/day (0.8m³/h) |
| Desalination Rate | ≥99.5% |
| System Recovery Rate | 35-50% |
| Washdown Pressure | 400 bar |
| Washdown Flow Rate | 20 L/min |
| Heating Temperature | Up to 60℃ |
| Generator Power | 95KW/49KVA (standby 125KW/61KVA) |
| Total Power Consumption | Desalination: 5.8kW; Heating: 56kW; Washing: 4kW |
| Power Supply | 380V/3P/50Hz (generator-powered) |
| Container Dimensions | 2438×2438×2400mm |
| Total Weight | ~1,500 kg |
| Explosion-Proof Rating | ATEX Zone 2 |
| Lead Time | 30 days |
| Design Service Life | 15 years (RO membrane: 3+ years) |
3.3 Process Design
3.3.1 Integrated Process Flow
- Seawater Intake & Pretreatment: Seawater is pumped into the system via SS316L intake pump; multi-media filters remove sand, rust, and organic matter; anti-scaling dosing prevents RO membrane scaling. For pre-treatment systems, visit [pre treatment filtration system].
- RO Desalination: High-pressure pump (5.5MPa) drives seawater through 8040-type RO membranes, removing 99.5% of salts; UV sterilization ensures microbial safety.
- Heating: Desalinated water is stored in a 300L insulated tank and heated to 60℃ via electric heater.
- High-Pressure Washdown: Heated fresh water is pressurized to 400bar for equipment cleaning; spray gun/rod enables flexible operation.
- Power Supply: Integrated generator provides independent power for the entire system, ensuring operation in off-grid environments.
3.3.2 Control and Safety
- PLC Control: Automates desalination, heating, and cleaning processes; manual mode for emergency operation.
- Safety Protections: Leakage protection, low water level shutdown, overheating alarm, overvoltage protection, and ground fault protection.
- Explosion-Proof Design: Generator and electrical components meet ATEX Zone 2 standards for hazardous environments.
For chemical dosing system details, visit [chemical dosing system].
4. Project Effect Verification
4.1 Desalinated Water Quality Test Results
| Parameter | Raw Water Value | Produced Water Value | Removal Efficiency |
|---|---|---|---|
| TDS | 35,000 mg/L | ≤500 mg/L | ≥98.6% |
| Turbidity | 4 NTU | ≤0.1 NTU | ≥97.5% |
| Desalination Rate | – | 99.5% | – |
| Bacteria Count | 10³ CFU/mL | Not Detected | 100% |
4.2 System Operation Performance
- Desalination Stability: Continuous 72-hour operation shows TDS fluctuation ≤±20 mg/L, no membrane fouling.
- Washdown Effectiveness: 400bar pressure and 60℃ temperature effectively remove oil, rust, and marine fouling from equipment.
- Energy Efficiency: Generator fuel consumption is optimized for continuous operation; electric heating achieves >90% thermal efficiency.
- Compactness: Containerized design enables transportation via ship/helicopter; on-site installation completed within 2 days.
- Durability: SS316L, FRP, and UPVC materials show no corrosion after 6-month offshore operation.
- Safety Compliance: Passes ATEX Zone 2 explosion-proof certification and DNV 2.7-1 offshore standards.
4.3 Compliance and Application
- Standards Compliance: Meets DNV 2.7-1, ATEX Zone 2, ISO, and WHO drinking water standards.
- Case Validation: Successfully deployed in offshore oil platforms and coastal industrial facilities in Thailand, Australia, and South Africa, with 99% operational availability and customer satisfaction ≥96%. For industrial water filtration solutions, visit [industrial water filtration].
5. Case Corresponding Product Quotation Description
5.1 Main Equipment Quotation
| Item | Model | Qty | Unit Price (USD) | Total Price (USD) | Description |
|---|---|---|---|---|---|
| 20m³/Day Containerized Desalination Machine | HLDES-1T | 1 | 29,850 | 29,850 | Includes desalination, UV sterilization, and pretreatment systems |
| 1m³/H Electric Boiler (Heating to 60℃) | – | 1 | 6,350 | 6,350 | 300L insulated tank, 60kW electric heating, explosion-proof |
| High-Pressure Washdown System | – | 1 | 8,750 | 8,750 | 400bar pump, 30m hose reel, spray gun/rod |
| Silent Generator (95KW/49KVA) | – | 1 | 13,960 | 13,960 | Standby 125KW/61KVA, explosion-proof, silent design |
| Total EXW Cost | – | – | – | 58,910 | Complete containerized system, international standard packaging |
5.2 Terms & Conditions
| Term Type | Details |
|---|---|
| Price Inclusions | Complete system, container, generator, and international packaging |
| Power Supply | 380V/3P/50Hz (generator-powered) |
| Payment Term | T/T: 50% deposit for production, 50% balance paid before shipment |
| Lead Time | 30 days from receipt of deposit |
| Warranty | 12 months from delivery; free repair/replacement for non-human-induced failures |
| Installation & Maintenance | Free manual, video guides, and online support; on-site installation available (customer bears engineer costs) |
| Customization | Available for higher capacity, pressure, or temperature requirements (price/production time varies) |
5.3 Annual Consumables Cost (Estimated)
| Consumable Name | Specification | Unit Price (USD) | Annual Consumption | Annual Cost (USD) |
|---|---|---|---|---|
| RO Membranes (10% replacement) | 8040-type | 850/piece | 0.2 pieces | 170 |
| Precision Filter Elements (5μm) | – | 25/piece | 12 pieces | 300 |
| Anti-Scaling Chemicals | Industrial grade | 60/L | 50L | 3,000 |
| UV Lamp | Disinfection grade | 200/piece | 1 piece | 200 |
| Total | – | – | – | 3,670 |
6. Common Questions (FAQ)
6.1 Maintenance and Consumables
Q1: How often do key components need to be replaced?A1: RO membranes (3+ years), precision filter elements (1 month), anti-scaling chemicals (monthly replenishment), UV lamp (1 year), and generator oil/filters (per 500 operating hours). For replacement parts, visit [accessory supporting equipment].
Q2: How to clean the RO membranes?A2: The system supports optional CIP cleaning (circulation pump + cleaning tank) for membrane maintenance; recommended every 3-6 months or when pressure difference >0.2 MPa.
6.2 Warranty and Support
Q1: What is covered under the 12-month warranty?A1: Manufacturing defects in desalination equipment, boiler, washdown system, and generator. Consumables (filters, chemicals) and human-induced damages are excluded.
Q2: Can the system operate in extreme temperatures?A2: The system is designed for 5℃-50℃; low-temperature insulation is available for cold environments, and cooling measures are recommended for temperatures >50℃ to protect membranes and electrical components.
6.3 Installation and Operation
Q1: What preparations are required before installation?A1: Prepare a flat foundation for the container, seawater intake pipeline, and fuel storage for the generator. No complex civil engineering is needed.
Q2: How to ensure explosion-proof safety?A2: All electrical components and the generator meet ATEX Zone 2 standards; regular safety inspections (per manufacturer guidelines) are required to maintain compliance.
6.4 System Performance
Q1: Can the washdown pressure and temperature be adjusted?A1: Yes. The system allows adjustable pressure (0-400bar) and temperature (ambient-60℃) to adapt to different cleaning needs.
Q2: What is the fuel consumption of the generator?A2: Fuel consumption depends on operating load; under full load (desalination + heating + washing), it is approximately 20-25L/h (varies by generator model).
Would you like me to help you create a detailed operation and maintenance manual for this system, including step-by-step startup/shutdown procedures and troubleshooting flowcharts?
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