1. Case Basic Information
1.1 Company Overview
Hella Water Treatment Equipment Technology Co., Ltd. is a professional provider of medium-scale RO water purification solutions, specializing in commercial, industrial, and municipal water treatment systems. With decades of industry experience, the company offers customizable, high-efficiency equipment featuring corrosion-resistant materials, intelligent control, and reliable performance. Its products are certified to international standards and deployed globally, serving scenarios such as drinking water purification, industrial process water, and wastewater reuse. For more water treatment products, visit [water treatment product].
1.2 Project Background
This project targets medium-scale water purification needs (e.g., small industrial facilities, commercial buildings, or rural communities) requiring deep desalination and contaminant removal. The 20m³/h RO system processes raw water with high TDS, turbidity, and toxic organic/inorganic pollutants into safe, clean water. The 6-stage filtration design ensures compliance with drinking water standards, while the compact SUS304 frame and FRP filter tanks make it suitable for both indoor and outdoor installation.
1.3 Raw Water & Target Water Quality Data
Raw Water Quality
| Parameter | Test Value | Unit | Compliance Status |
|---|---|---|---|
| Total Dissolved Solids (TDS) | 1500 mg/L | mg/L | Exceeds standard |
| Turbidity | 20 NTU | NTU | Exceeds (≤5 NTU) |
| Conductivity | 2600 μS/cm | μS/cm | Exceeds standard |
| Ammonia (NH₃) | 15 mg/L | mg/L | Exceeds (≤0.1 mg/L) |
| Nitrite (NO₂⁻) | 3 mg/L | mg/L | Exceeds (≤0.1 mg/L) |
| Nitrate (NO₃⁻) | 50 mg/L | mg/L | Exceeds (≤0.1 mg/L) |
| Chloride (Cl⁻) | 400 mg/L | mg/L | Exceeds (320.35 mg/L) |
| Sulfate (SO₄²⁻) | 500 mg/L | mg/L | Exceeds (692.19 mg/L) |
| Benzene | 10 μg/L | μg/L | Exceeds (<1 μg/L) |
| Toluene | 700 μg/L | μg/L | Exceeds (<1 μg/L) |
| Heavy Metals (Hg/Cd/As) | 0.001-0.01 mg/L | mg/L | Exceeds standard |
Target Water Quality
| Parameter | Standard Value | Unit |
|---|---|---|
| TDS | ≤50 mg/L | mg/L |
| Turbidity | ≤0.1 NTU | NTU |
| Conductivity | ≤100 μS/cm | μS/cm |
| Ammonia (NH₃) | ≤0.1 mg/L | mg/L |
| Nitrite (NO₂⁻) | ≤0.1 mg/L | mg/L |
| Nitrate (NO₃⁻) | ≤10 mg/L | mg/L |
| Chloride (Cl⁻) | ≤200 mg/L | mg/L |
| Organic Pollutants (Benzene/Toluene) | Not Detected | μg/L |
| Heavy Metals (Hg/Cd/As) | ≤0.001 mg/L | mg/L |
| Desalination Rate | ≥99.5% | – |
| Bacteria Removal Rate | ≥99.99% | – |
2. Core Pain Points and Requirements of the Project
2.1 Raw Water Quality Pain Points
- High TDS and Conductivity: TDS (1500 mg/L) and conductivity (2600 μS/cm) require deep desalination to meet drinking water standards.
- Turbidity and Suspended Solids: Turbidity (20 NTU) causes RO membrane fouling, reducing system efficiency and lifespan.
- Toxic Contaminants: Excessive ammonia, nitrite, nitrate, and heavy metals (Hg/Cd/As) pose serious health risks.
- Organic Pollution: Benzene and toluene exceed standards, requiring effective adsorption and separation.
- Scaling Risk: High chloride and sulfate levels lead to RO membrane scaling, demanding anti-scaling measures.
2.2 Project Operation Requirements
- Treatment Capacity: 20 m³/h of purified water, supporting continuous 24/7 operation.
- Desalination Efficiency: Desalination rate ≥99.5% to reduce TDS from 1500 mg/L to ≤50 mg/L.
- Automation Level: PLC integrated control with auto/manual modes; real-time monitoring of pressure, flow, and water quality.
- Durability: Corrosion-resistant materials (SUS304 frame, FRP filter tanks, PVC pipes) for long-term operation.
- Stability: Operating pressure 1.6 MPa, system recovery rate 45-55%, temperature adaptability 5℃-50℃.
- Maintenance Convenience: Easy-to-replace filter elements and RO membranes; accessible components for routine checks.
- Compliance: Meet international drinking water standards (e.g., WHO) and local environmental regulations.
3. Hella Water Customized Solutions
3.1 System Model and Core Configuration
Hella Water provides the HLRO-20T 6-Stage Reverse Osmosis System, integrating pretreatment, RO desalination, disinfection, and intelligent control. The detailed configuration is as follows:
| No. | Part Name | Description |
|---|---|---|
| 1 | Pretreatment System | FRP quartz sand filter (2000KG media) + FRP activated carbon filter (700KG media) + 1μm precision filter (stainless steel) |
| 2 | Dosing System | Anti-scaling dosing system (100L PE tank + 7bar 3L/H dosing pump) |
| 3 | RO Membrane System | 4×8040-5 pressure vessels + 20×8040-type RO membranes (99.5% desalination rate) |
| 4 | High-Pressure System | High-pressure pump (32kW, flow 40m³/h, head 150m) with pressure switch protection |
| 5 | Disinfection System | UV sterilizer for microbial control |
| 6 | Control & Protection | PLC integrated controller, touch screen, high/low pressure switch, conductivity alarm, liquid level alarm |
| 7 | Raw Water & Piping | Raw water pump (flow 30m³/h, head 40m) + PVC pipes + SUS304 frame |
For more pre-treatment systems, visit [pre treatment filtration system].
3.2 Key Technical Parameters of HLRO-20T
| Parameter | Specification |
|---|---|
| Water Output Capacity | 20 m³/h (at 25℃) |
| Power Supply | 380V/3P/50Hz |
| Total Power Consumption | 48 kW |
| Filtration Stages | 6-stage (quartz sand → activated carbon → dosing → precision filter → RO → UV sterilization) |
| Membrane Quantity | 20×8040-type RO membranes |
| Desalination Rate | ≥99.5% |
| Operating Pressure | 1.6 MPa |
| Operating Temperature | 5℃-50℃ |
| System Recovery Rate | 45-55% |
| SDI Requirement | <5 (raw water pretreatment target) |
| Lead Time | 15 days |
| Design Service Life | 10-12 years |
3.3 Process Design
3.3.1 6-Stage Purification Process
- Quartz Sand Filtration: FRP tank with 2000KG quartz sand removes suspended solids, colloids, and silt; automatic backwashing.
- Activated Carbon Filtration: FRP tank with 700KG activated carbon adsorbs organic matter, residual chlorine, and toxic organics (benzene/toluene). For multi-media filter details, see [multi media filter].
- Anti-Scaling Dosing: Dosing system adds anti-scaling agents to prevent membrane scaling. For chemical dosing system details, visit [chemical dosing system].
- Precision Filtration: 1μm PP filter elements capture fine particles to protect RO membranes.
- RO Membrane Desalination: 20×8040-type membranes (0.0001μm precision) remove 99.5% of dissolved salts, heavy metals, and nitrite/nitrate. For reverse osmosis details, visit [reverse osmosis].
- UV Sterilization: Kills residual bacteria and viruses, ensuring drinking water safety.
3.3.2 Control and Protection
- PLC Control: Automates pump operation, backwashing, and cleaning; touch screen displays real-time parameters (flow, pressure, conductivity).
- Pressure Protection: High/low pressure switch (low pressure shutdown, high pressure alarm) prevents equipment damage.
- Monitoring Devices: Conductivity meter, pressure gauge, and flowmeter track system performance; alarms trigger for abnormalities.
4. Project Effect Verification
4.1 Purified Water Quality Test Results
| Parameter | Raw Water Value | Produced Water Value | Removal Efficiency |
|---|---|---|---|
| TDS | 1500 mg/L | ≤50 mg/L | ≥96.7% |
| Turbidity | 20 NTU | ≤0.1 NTU | ≥99.5% |
| Conductivity | 2600 μS/cm | ≤100 μS/cm | ≥96.2% |
| Ammonia (NH₃) | 15 mg/L | ≤0.1 mg/L | ≥99.3% |
| Nitrite (NO₂⁻) | 3 mg/L | ≤0.1 mg/L | ≥96.7% |
| Chloride (Cl⁻) | 400 mg/L | ≤200 mg/L | ≥50.0% |
| Benzene | 10 μg/L | Not Detected | 100% |
| Heavy Metals (Hg/Cd/As) | 0.001-0.01 mg/L | ≤0.001 mg/L | ≥90.0% |
| Desalination Rate | – | 99.5% | – |
4.2 System Operation Performance
- Stability: Continuous 72-hour operation shows water output fluctuation ≤±2%, TDS stable at ≤45 mg/L.
- Energy Efficiency: Operating power 48 kW, energy consumption ~2.4 kWh/m³ of purified water.
- Automation Effectiveness: Automatic backwashing and pressure protection reduce manual intervention by 85%.
- Durability: SUS304 frame, FRP tanks, and PVC pipes show no corrosion after 6-month outdoor operation.
- Recovery Efficiency: System recovery rate reaches 52%, exceeding the design range of 45-55%.
4.3 Compliance and Application
- Standards Compliance: Meets WHO drinking water standards and industrial water treatment regulations.
- Case Validation: Successfully deployed in commercial and small industrial projects in South Africa, Thailand, and Indonesia, with customer satisfaction ≥95%. 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/H RO Water Purification System | HLRO-20T | 1 | 19,600 | 19,600 | Complete 6-stage system including filters, RO membranes, pump, control cabinet, and UV sterilizer; EXW price |
5.2 Terms & Conditions
| Term Type | Details |
|---|---|
| Price Inclusions | Complete system, controller cabinet, international standard packaging |
| Power Supply | 380V/3P/50Hz (customizable for other voltages) |
| Payment Term | T/T: 50% deposit for production, 50% balance paid before shipment |
| Lead Time | 15 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: visa, flights, accommodation, labor) |
| Customization | Available for capacity, filtration stages, or disinfection options (price/production time varies) |
5.3 Annual Consumables Cost (Estimated)
| Consumable Name | Specification | Unit Price (USD) | Annual Consumption | Annual Cost (USD) |
|---|---|---|---|---|
| PP Filter Elements (1μm) | PP material | 2.5/piece | 60 pieces | 150 |
| Anti-Scaling Chemicals | Industrial grade | 50/bottle | 18 bottles | 900 |
| RO Membranes (10% replacement) | 8040-type | 420/piece | 2 pieces | 840 |
| Quartz Sand | Filter media | 0.2/kg | 400 kg | 80 |
| Activated Carbon | Filter media | 1.5/kg | 140 kg | 210 |
| Total | – | – | – | 2,180 |
6. Common Questions (FAQ)
6.1 Maintenance and Consumables
Q1: How often do key components need to be replaced?A1: PP filter elements (4 months), anti-scaling chemicals (1.5 bottles/month), RO membranes (3 years), quartz sand (3 years), and activated carbon (3 years). Cycles depend on raw water quality. For replacement parts, visit [accessory supporting equipment].
Q2: What is the recommended cleaning frequency for RO membranes?A2: Chemical cleaning (acid/alkaline) is recommended every 3-6 months to remove scaling and fouling; triggered by pressure difference >0.2 MPa.
6.2 Warranty and Support
Q1: What is covered under the 12-month warranty?A1: Manufacturing defects in equipment (pumps, membranes, control system). Consumables (filters, chemicals) and human-induced damages are excluded.
Q2: Can Hella Water provide technical support for overseas customers?A2: Yes. 7×24 online technical support is available via video calls and manuals; on-site support is optional (customer bears related costs).
6.3 Installation and Operation
Q1: Is the system easy to install?A1: Yes. The modular design allows plug-and-play installation; no complex civil engineering required. Installation can be completed by local technicians with the provided manual and video guides.
Q2: How to handle system alarms?A2: Alarms (high/low pressure, conductivity overlimit) are displayed on the touch screen. Common issues (e.g., filter clogging) can be resolved by replacing filter elements; contact support for complex faults.
6.4 System Performance
Q1: Can the system handle raw water with higher TDS than specified?A1: The system is designed for raw water TDS ≤2000 mg/L. For TDS >2000 mg/L, a specialized high-pressure RO membrane upgrade is available.
Q2: What is the impact of temperature on water production?A2: Water production decreases by 2-3% for every 1℃ drop in temperature (based on 25℃ standard). Heating equipment is recommended for raw water temperature <10℃.
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