5m³/H Reverse Osmosis (RO) Water Purification Project Case

1. Case Basic Information

1.1 Company Overview

Hella Water Treatment Equipment Technology Co., Ltd. is a professional provider of small-scale RO water purification solutions, specializing in integrated, skid-mounted systems for commercial, industrial, and municipal use. With ISO, CE, and NSF certifications, the company offers customizable equipment featuring high desalination efficiency, intelligent control, and corrosion resistance. Its products meet international drinking water standards and are deployed globally, serving scenarios such as small factories, commercial buildings, and rural communities. For more water treatment products, visit [water treatment product].

1.2 Project Background

This project targets small-scale water purification needs (e.g., small industrial facilities, commercial centers, or rural water supply) requiring deep desalination and contaminant removal. The 5m³/h RO system processes raw water with high hardness, chlorides, and suspended solids into high-purity water. The integrated design includes pretreatment, RO desalination, CIP cleaning, and intelligent control, ensuring stable operation and easy maintenance. The system is tailored for 380V/3P/50Hz power supply and meets the water quality requirements of Russian and international standards.

1.3 Raw Water & Target Water Quality Data

Raw Water Quality

Parameter	Test Value	Unit
pH	7.49	–
Total Hardness (as CaCO₃)	6.6 mmol/dm³	mmol/dm³
Chlorides (Cl⁻)	222.8 mg/dm³	mg/dm³
Sulfates (SO₄²⁻)	69.14 mg/dm³	mg/dm³
Total Alkalinity	4.8 mmol/dm³	mmol/dm³
Suspended Solids	32.4 mg/dm³	mg/dm³
TDS	734 mg/dm³	mg/dm³

Target Water Quality (Purified Water)

Parameter	Standard Value	Unit
TDS	<10 mg/L	mg/L
Turbidity	<0.01 NTU	NTU
pH	7.0-7.5	–
Total Hardness (as CaCO₃)	<0.01 mg-eq/L	mg-eq/L
Chlorides (Cl⁻)	<5 mg/L	mg/L
Iron (Fe)	<0.01 mg/L	mg/L
Nitrite (NO₂⁻)	<0.01 mg/L	mg/L
Desalination Rate	≥99.5%	–
Bacteria Removal Rate	≥99.99%	–

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2. Core Pain Points and Requirements of the Project

2.1 Raw Water Quality Pain Points

• High Hardness: Total hardness (6.6 mmol/dm³) leads to scaling on RO membranes and pipelines, reducing system efficiency.
• Elevated Chlorides: Chlorides (222.8 mg/dm³) are corrosive to equipment and affect water taste.
• Suspended Solids: Suspended solids (32.4 mg/dm³) cause membrane fouling, shortening membrane lifespan.
• TDS Content: TDS (734 mg/dm³) exceeds drinking water standards, requiring deep desalination.

2.2 Project Operation Requirements

• Treatment Capacity: 5 m³/h of purified water, supporting 24/7 continuous operation.
• Desalination Efficiency: Desalination rate ≥99.5% to reduce TDS from 734 mg/dm³ to <10 mg/L.
• Automation Level: PLC integrated control with auto/manual modes; real-time monitoring of pressure, flow, and water quality.
• Compact Design: Skid-mounted structure (2.5×0.8×1.6m for RO host) suitable for limited space.
• Durability: Corrosion-resistant materials (SUS304, FRP, PVC) for long-term use.
• Maintenance Convenience: CIP cleaning system for membrane maintenance; easy replacement of filter media and membranes.
• Protection Function: High/low pressure switch, overload protection, and dry-run protection to ensure system safety.

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3. Hella Water Customized Solutions

3.1 System Model and Core Configuration

Hella Water provides the HLRO-5T Integrated Reverse Osmosis System, integrating pretreatment, RO desalination, CIP cleaning, and intelligent control. The detailed configuration is as follows:

No.	Part Name	Description
1	Pretreatment System	2×disk filters (100μm, Q=7.5m³/h) + 3×multimedia filters (750×1850mm, manganese sand + activated carbon) + 5μm precision filter (40″ PP filter elements)
2	Dosing Systems	3 sets of dosing systems (100L PE tanks + 6×dosing pumps) for coagulant, sodium hypochlorite, and anti-scaling agent
3	RO Membrane System	5×8040-type Dupont RO membranes + FRP membrane shells (100PSI) + high-pressure pump (Q=10m³/h, head=120m)
4	Cleaning System	CIP cleaning system (500L cleaning tank + CHL14-30 cleaning pump + 40″ precision filter)
5	Control & Monitoring	PLC controller + touch screen + 4×HM digital conductivity meters + pressure transmitter + ultrasonic flow meter + thermometer
6	Storage & Piping	3m³ + 10m³ SUS304 water tanks + PVC low-pressure pipes + high-pressure pipes
7	Pumps	Raw water booster pump + backwash pump + clean water pump station (frequency converter control)

For more pre-treatment systems, visit [pre treatment filtration system].

3.2 Key Technical Parameters of HLRO-5T

Parameter	Specification
Water Output Capacity	5 m³/h (at 25℃)
Power Supply	380V/3P/50Hz
Total Power Consumption	10 kW
Desalination Rate	≥99.5%
Operating Pressure	1.5 MPa
Operating Temperature	5℃-50℃
System Recovery Rate	50-70% (max ≤60% recommended)
SDI Requirement	<5 (raw water pretreatment target)
Membrane Quantity	5×8040-type Dupont RO membranes
System Dimensions	RO Host: 2.5×0.8×1.6m; Pretreatment: 3.5×1.2×2.2m
Total Weight	~2,500 kg
Lead Time	15 days
Design Service Life	8-10 years (RO membrane ≥3 years)

3.3 Process Design

3.3.1 Integrated Purification Process

1. Pretreatment: Disk filters remove large particles; multimedia filters (manganese sand + activated carbon) reduce hardness, iron, and organic matter; precision filter protects RO membranes. For multi-media filter details, see [multi media filter].
2. Dosing: Coagulant improves sedimentation; sodium hypochlorite disinfects; anti-scaling agent prevents membrane scaling. For chemical dosing system details, visit [chemical dosing system].
3. RO Desalination: 8040-type Dupont membranes (0.0001μm precision) remove 99.5% of dissolved salts, heavy metals, and contaminants. For reverse osmosis details, visit [reverse osmosis].
4. CIP Cleaning: Periodic chemical cleaning restores membrane performance; triggered by pressure difference >0.2 MPa or timed cycles.
5. Storage & Distribution: Clean water tanks store purified water; frequency converter-controlled pumps ensure stable water supply.

3.3.2 Control and Protection

• PLC Touch Screen Control: Real-time monitoring of flow, pressure, conductivity, and temperature; automatic start/stop and backwashing.
• Protection Functions: High/low pressure switch (low pressure shutdown, high pressure alarm), overload protection, and dry-run protection for pumps.
• Monitoring Devices: Conductivity meters, pressure transmitters, and flow meters track system performance; alarms trigger for abnormalities.

For industrial water filtration solutions, visit [industrial water filtration].

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4. Project Effect Verification

4.1 Purified Water Quality Test Results

Parameter	Raw Water Value	Produced Water Value	Removal Efficiency
TDS	734 mg/dm³	<10 mg/L	≥98.6%
Turbidity	–	<0.01 NTU	–
pH	7.49	7.1	–
Total Hardness	6.6 mmol/dm³	<0.01 mg-eq/L	≥99.8%
Chlorides (Cl⁻)	222.8 mg/dm³	<5 mg/L	≥97.8%
Sulfates (SO₄²⁻)	69.14 mg/dm³	<5 mg/L	≥92.9%
Suspended Solids	32.4 mg/dm³	<0.1 mg/L	≥99.7%
Desalination Rate	–	99.5%	–

4.2 System Operation Performance

• Stability: Continuous 72-hour operation shows water output fluctuation ≤±2%, TDS stable at ≤8 mg/L.
• Energy Efficiency: Operating power 10 kW, energy consumption ~2.0 kWh/m³ of purified water.
• Compactness: Skid-mounted design fits in small utility rooms; installation completed within 1-2 days with online video guides.
• Durability: SUS304, FRP, and PVC components show no corrosion after 6-month operation.
• Maintenance Convenience: CIP cleaning system simplifies membrane maintenance; filter media and membranes are easy to replace.

4.3 Compliance and Application

• Standards Compliance: Meets ISO, CE, and NSF standards, as well as Russian drinking water requirements.
• Case Validation: Successfully deployed in small industrial and commercial projects in Russia and other countries, with customer satisfaction ≥95%. For commercial water filter applications, visit [commercial water filter].

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5. Case Corresponding Product Quotation Description

5.1 Main Equipment Quotation

Item	Model	Qty	Unit Price (USD)	Total Price (USD)	Description
5m³/h RO Water Treatment System	HLRO-5T	1	19,650	19,650	Complete system including pretreatment, RO membranes, pumps, control cabinet, and CIP cleaning system
HM Digital Conductivity Meters	–	4	85	340	South Korea-made, real-time conductivity monitoring
Thermometer	–	1	130	130	Temperature monitoring
Pressure Transmitter	–	1	110	110	Pressure sensing and protection
Ultrasonic Flow Meter	–	1	650	650	Flow rate monitoring
PVC Pipes (DN50) + Elbows	–	100	1.1	110	Low-pressure piping system
Total EXW Cost	–	–	–	20,990	EXW terms, including international standard packaging

5.2 Terms & Conditions

Term Type	Details
Price Inclusions	Complete system, monitoring devices, piping, and international packaging
Power Supply	380V/3P/50Hz (customizable for other voltages/frequencies)
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, and components (price/production time varies)

5.3 3-Year Consumables Cost (Estimated)

Consumable Name	Specification	Unit Price (USD)	Quantity	3-Year Cost (USD)
PP Filter Elements (5μm)	40″ PP material	2/piece	36 pieces	72
Anti-Scaling Agent	Industrial grade	60/bottle	18 bottles	1,080
RO Membranes	8040-type Dupont	310/piece	5 pieces	1,550
Manganese Sand	Filter media	1/kg	500 kg	500
Activated Carbon	Granular	2/kg	180 kg	360
Electrical Components (Relays/Pressure Switches)	–	220/set	1 set	220
Total 3-Year Cost	–	–	–	3,782

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6. Common Questions (FAQ)

6.1 Maintenance and Consumables

Q1: How often do key components need to be replaced?A1: PP filter elements (1 month), anti-scaling agent (2 months/bottle), RO membranes (3 years), manganese 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 CIP cleaning frequency?A2: Recommended every 3-6 months under normal operation; triggered automatically by transmembrane pressure difference >0.2 MPa or timed cycles.

6.2 Warranty and Support

Q1: What is covered under the 12-month warranty?A1: Manufacturing defects in equipment (pumps, membranes, control cabinet, and monitoring devices). Consumables (filters, chemicals) and human-induced damages are excluded.

Q2: Can Hella Water provide technical support for Russian 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 for non-professionals?A1: Yes. The skid-mounted design and online video guides allow installation by local technicians; no complex civil engineering required.

Q2: How to handle system alarms?A2: Common alarms (high pressure/low pressure/overload) are displayed on the touch screen. Troubleshooting can be done by checking pipeline blockages, power supply, or filter media fouling; online support is available for complex issues.

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 ≤3000 mg/dm³. For TDS >3000 mg/dm³, 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℃.

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?