Food and beverages process water treatment and reuse

Lenntech designs and delivers industrial water treatment systems for food and beverage process water, including process design, engineering, equipment supply, installation, and commissioning.

Water is a key utility in food and beverage production, supporting cleaning, processing, cooling, and auxiliary operations. Lenntech systems ensure reliable and consistent water quality, adapted to strict hygiene and operational requirements, while supporting water reuse and process optimization

Application context

Water is used throughout food and beverage processes, including:

• Cleaning and sanitation (CIP systems)
• Cooling and process utilities
• Rinsing and washing of raw materials
• General process water supply

Typical water sources include:

• Municipal water
• Groundwater
• Surface water
• Treated wastewater (for reuse applications)

Key challenges include:

• Microbiological safety and hygiene requirements
• Consistency of water composition
• Removal of organic compounds (COD, TOC)
• Control of hardness and scaling
• Reduction of water consumption and wastewater discharge

Increasingly, food and beverage producers implement water reuse strategies, reducing freshwater demand while maintaining compliant and safe process conditions.

Typical Lenntech solution

A typical Lenntech system for food and beverage process water consists of a combination of filtration, conditioning, membrane separation, and disinfection technologies, adapted to the application.

Pretreatment / Filtration

• Conditioning to reduce fouling potential
• Multimedia filtration (MMF) or equivalent
• Ultrafiltration (UF) for suspended solids and organics removal
• Protection of downstream membrane systems

Illustration of a multimedia filtration unit

Conditioning

• Adjustment of hardness and scaling potential
• Removal of compounds impacting process stability
• Optimization of water chemistry

Membrane separation

• Nanofiltration (NF) or reverse osmosis (RO)
• Closed‑circuit RO (CCRO) for high‑efficiency water recovery
• Removal of dissolved salts and organic compounds

Illustration of a Reverse Osmosis unit

Polishing and disinfection

• Remineralization where required for process compatibility
• Disinfection (UV, chlorine dioxide, or equivalent)
• Final adjustment to meet process water specifications

This approach ensures stable water quality and enables safe and efficient reuse within food and beverage operations.

Process Flow Diagram

A typical Lenntech system for food and beverage process water is illustrated below:

Example system configuration

Flowrate: ~2,160 m³/day

Feed water: Brewery wastewater

Technologies:

• Cartridge filtration
• Closed‑circuit reverse osmosis (CCRO)
• Calcite filtration (remineralization)
• pH adjustment and chemical dosing
• Disinfection (ClOâ‚‚)
• Automated cleaning (CIP)

Effluent quality:

• Water compliant with drinking water guidelines (WHO)
• Suitable for reuse in process applications

Application: Process water reuse in brewery operations

System configuration:

• High‑recovery CCRO (~90%)
• Fully automated operation with PLC/SCADA
• Integrated remineralization and disinfection steps

Outcome:
The system enables reuse of process wastewater within the factory, significantly reducing freshwater consumption and wastewater discharge while maintaining stable and compliant process water quality.

A more described reference project sheet is available here.

Additional reference: Bottled water production facility (Nigeria), demonstrating complete process water production from raw water sources. The project sheet is available here.

Applications / Reuse of treated water

Treated water can be used for:

• Process water in food and beverage production
• Cleaning and sanitation systems (CIP)
• Utility water (cooling, rinsing, washing)
• Internal reuse within the production facility

Benefits include:

• Reduced freshwater consumption
• Lower wastewater discharge and treatment costs
• Improved sustainability performance
• Stable and controlled water quality
• Compliance with hygiene and operational requirements

Lenntech scope of supply

Lenntech delivers complete food and beverage water treatment systems, including:

• Process assessment and water quality evaluation
• System design and technology selection
• Detailed engineering
• Equipment supply (filtration, membrane systems, disinfection)
• Modular or containerized installations
• Installation supervision and commissioning
• Operational support and optimization

Optional configurations and flexibility

Depending on application and water source, systems may include:

• Ultrafiltration for microbiological control
• Activated carbon for organic removal
• Nanofiltration for selective separation
• CCRO systems for high‑efficiency reuse
• Advanced disinfection systems
• Integration with wastewater reuse loops

System configurations are tailored to meet process requirements, hygiene standards, and water reuse targets.

Why choose Lenntech for food and beverage water treatment

Lenntech combines technical expertise and system integration capabilities that make it well suited for food and beverage applications:

• Proven experience in industrial water treatment and reuse systems
• Strong expertise in membrane, filtration, and disinfection technologies
• Ability to design systems compliant with strict hygiene and process requirements
• Experience in water reuse and high‑recovery systems (CCRO)
• Flexible solutions including modular and containerized installations
• Focus on water efficiency, operational reliability, and sustainability

Lenntech supports clients from process evaluation through to full system implementation, ensuring reliable and efficient water management in food and beverage production.