Clean Water Treatment

Process Water

Process water plays a vital role in manufacturing, even though it may not be part of the final product. It is essential for maintaining product quality, optimising production efficiency, and protecting equipment. Industries such as food and beverage, pharmaceuticals, chemicals, textiles, energy, and metal processing all rely heavily on precisely treated process water.

At Barr + Wray, we specialise in the design, supply, and installation of advanced water treatment systems tailored to meet the unique demands of process water applications. Our expertise ensures that water used throughout production meets strict quality, hygiene, and operational standards.

We provide solutions across every stage of the process water journey:

1. Cooling Water – We supply systems for treating water used in cooling towers, heat exchangers, and condensers, helping prevent scaling, fouling, and corrosion.
2. Cleaning + Rinsing – For applications requiring ultra-pure water, such as in pharmaceutical, food, and electronics production, our systems deliver high-grade water suitable for sensitive cleaning processes.
3. Boiler Feed Water – Our treatment solutions protect steam systems by removing impurities that cause scaling and corrosion, ensuring safe and efficient boiler operation.
4. Chemical Mixing – We deliver water quality control solutions that support accurate and consistent chemical reactions during manufacturing.
5. Fermentation + Processing – In beverage and biopharmaceutical production, we provide systems that ensure water quality supports microbial control and product purity.

Barr + Wray’s process water solutions are engineered for performance, reliability, and full compliance with industry standards.

Demineralised Water

Demineralised (demin) water treatment is the process of removing dissolved mineral salts such as calcium, magnesium, sodium, chlorides, sulphates, and bicarbonates from water. This high-purity water is critical in industries where even trace levels of minerals can interfere with processes, including pharmaceuticals, power generation, electronics manufacturing, and food and beverage production.

At Barr + Wray, we have extensive experience in delivering tailored demineralised water systems across a range of sectors, with particular expertise in the whisky and electronics industries.

In whisky production, water is used not only as a key ingredient but also throughout the mashing, fermentation, dilution, and cleaning stages. The mineral content of untreated water can significantly affect flavour, clarity, and product consistency. We provide demin systems that help distillers achieve the water quality needed for a consistently high-quality product.

In the electronics industry, ultra-pure water is essential to prevent contamination and defects. Barr + Wray supplies advanced multi-stage treatment systems that often combine ion exchange, reverse osmosis, electro-deionisation, and degassing to meet the ultra-high purity standards required.

We also support applications such as boiler feed water treatment, where the removal of minerals is essential to prevent scaling, corrosion, and reduced efficiency.

Our core demineralisation technologies include:

1. Ion Exchange – Resin beds replace unwanted ions with hydrogen and hydroxide, producing pure water.
2. Reverse Osmosis (RO) – Removes up to 99% of dissolved salts and impurities using semi-permeable membranes.
3. Mixed-Bed Polishing – Used post-RO to achieve ultra-pure water, especially for electronics and high-spec applications.

Barr + Wray’s systems are engineered for performance, long-term reliability, and compliance with strict industry standards.

Reverse Osmosis

At Barr + Wray, we specialise in the design, supply, and installation of high-performance Reverse Osmosis (RO) systems for a wide range of industrial and commercial applications. With decades of experience in water treatment engineering, we deliver fully integrated RO solutions tailored to meet the specific needs of sectors such as pharmaceuticals, food and beverage, power generation, electronics, and wastewater reuse.

Reverse osmosis is a proven and efficient method for producing high-purity water by removing up to 99% of dissolved salts, minerals, and impurities. Water is pressurised and pushed through semi-permeable membranes that reject contaminants while allowing clean water molecules to pass. The result is consistently clean, demineralised water suitable for critical processes.

Our RO systems typically include:

• Pre-treatment units (to remove sediment, chlorine, and other harmful substances)
• High-pressure pumps for optimal membrane performance
• Membrane modules engineered for long life and high rejection rates
• Post-treatment options, such as UV disinfection, pH correction, or mixed-bed polishing

Barr + Wray’s RO solutions are designed for efficiency, reliability, and ease of maintenance. We also offer automated control systems and remote monitoring options to optimise performance and reduce operator workload.

In addition to supplying new RO systems, we provide ongoing maintenance, membrane cleaning, replacement, and system upgrades, ensuring long-term system health and performance.

Whether for demineralisation, desalination, or wastewater recovery, Barr + Wray delivers robust RO solutions that meet today’s stringent water quality demands across a wide range of industries.

Ultra-Pure Water (UPW)

At Barr + Wray, we deliver advanced ultrapure water (UPW) treatment systems tailored to the demanding requirements of industries such as semiconductor and electronics manufacturing, pharmaceuticals, biotechnology, and power generation. In these environments, even the smallest impurity can compromise product integrity, system performance, or regulatory compliance.

Ultrapure water is treated to remove virtually all contaminants—dissolved salts, organics, particles, bacteria, and gases—achieving resistivity levels approaching 18.2 MΩ·cm and extremely low TOC levels. With decades of engineering experience, Barr + Wray designs fully integrated, high-performance UPW systems to meet or exceed industry standards.

Our typical UPW treatment process includes:

1. Pre-treatment – Multi-media filtration and activated carbon systems to remove sediments and organics.
2. Reverse Osmosis (RO) – For removal of dissolved solids and impurities.
3. Ion Exchange / EDI – Mixed-bed polishing or continuous electro-deionisation for ultra-low conductivity.
4. Ultrafiltration (UF) – To remove colloids, fine particles, and microorganisms.
5. UV Oxidation – TOC UV units to break down trace organics and germicidal UV units provide microbial control.
6. Final Filtration – High-purity filters, down to less than 0.1 micron for final polishing.

Each Barr + Wray UPW system can be equipped with continuous online monitoring of key parameters such as resistivity, and TOC, ensuring water quality remains within the strictest specifications.

From silicon wafer production plants, to injectable pharmaceutical facilities, our UPW systems are engineered to deliver precision, reliability, and regulatory compliance. We offer complete lifecycle support—including design, installation, commissioning, validation, and maintenance—making Barr + Wray a trusted partner for high-purity water solutions across critical sectors.

Colour Removal

At Barr + Wray, we provide advanced colour removal systems for both municipal drinking water and a wide range of industrial water treatment applications. Colour in clean water—caused by dissolved organic matter such as humic acids, tannins, or metals such as iron and manganese can affect not only water aesthetics, but also compliance with regulatory standards.

We design and supply treatment systems that combine Activated Carbon Filtration and Ion Exchange Technology to effectively reduce colour and improve water clarity, taste, and overall quality.

Activated Carbon Filtration

Our systems utilise high-grade granular activated carbon (GAC) media to remove naturally occurring organics and disinfection by-products responsible for colour, odour, and taste. These filters are engineered for maximum contact time and adsorption efficiency, making them ideal for pre-treatment in both municipal waterworks and industrial processing facilities.

Ion Exchange Treatment

Barr + Wray’s DWI-approved ion exchange resins (DWI56/4/1237, DWI56/4/1238 and DWI56/4/1239) provide safe and effective removal of colour-causing organics.

By integrating both methods, our systems deliver reliable, non-chemical treatment solutions that meet strict quality and aesthetic standards. We also offer automated regeneration systems, media replacement, and ongoing service support to ensure long-term performance and regulatory compliance.

From drinking water treatment plants to industrial production lines, Barr + Wray’s tailored solutions ensure consistently clear, high-quality water with efficient and sustainable operation.

Borehole Treatment

At Barr + Wray, we design and deliver fully engineered borehole water treatment systems for municipal, commercial, and industrial applications. Borehole water, while a valuable and sustainable source, often requires multi-stage treatment to meet regulatory, operational, and quality standards.

With extensive experience in water treatment across various sectors, Barr + Wray provides turnkey solutions that are tailored to the specific water chemistry and site conditions. Whether for potable use, industrial process water, or irrigation, we ensure reliable performance, compliance, and long-term system efficiency.

Our Typical Borehole Water Treatment Process Includes:

1. Pre-Filtration – Removal of sand, silt, and suspended solids using screen filters, bag filters or cartridge systems to protect downstream equipment.
2. Aeration Systems – Designed to oxidise dissolved iron and manganese, making them easier to filter out.
3. Media Filtration – Using custom-designed sand or multimedia filters to remove oxidised metals, turbidity, and other particulates.
4. Water Softening: Using ion exchange resin to remove hardness minerals from the water.
5. Disinfection – We offer UV disinfection units, automated chemical dosing systems and ozone systems to eliminate harmful microorganisms.
6. pH Correction – Where necessary, we include pH adjustment using dosing systems or neutralising filters to prevent corrosion and enhance water taste.

We also integrate real-time monitoring and control systems for performance tracking, alarms, and remote management—ideal for continuous and unattended operation.

Each system is custom-engineered based on detailed water analysis and designed for ease of maintenance, energy efficiency, and compliance with local water regulations.

From individual boreholes to multi-source treatment plants, Barr + Wray delivers complete, reliable borehole water treatment solutions backed by decades of expertise and ongoing technical support.

Rainwater Harvesting

At Barr + Wray, we provide fully engineered rainwater harvesting and treatment systems designed to reduce reliance on mains water supplies and support sustainable water management across a variety of commercial, municipal, industrial, and leisure applications.

While rainwater is a valuable natural resource, it typically contains contaminants such as dust, leaves, organic matter, microorganisms, and atmospheric pollutants. To ensure safe and effective use, Barr + Wray designs bespoke treatment systems that address the specific challenges associated with collected rainwater.

Our Rainwater Treatment Process Typically Includes:

1. Pre-Filtration – We supply robust leaf traps and mesh screens to remove large debris at the collection point.
2. Settling or Sedimentation Tanks – Used to allow heavier particles to settle before further treatment stages.
3. Media Filtration – Custom-designed sand or multimedia filters remove fine sediments and suspended solids
4. Activated Carbon Filtration – Our systems incorporate high-performance carbon media to reduce odours, improve taste, and adsorb chemical pollutants
5. Disinfection – To ensure microbiological safety, we offer both UV disinfection systems and automated chlorination units, suitable for high-demand or sensitive applications.
6. pH Correction – Where rainwater is acidic, we implement automated dosing or neutralising filters to stabilise water chemistry.

All systems are modular and scalable, allowing us to integrate them into new developments or retrofit existing buildings. Whether for non-potable reuse (e.g., toilet flushing, irrigation, cooling towers) or more advanced potable treatment, we tailor each solution to meet site-specific requirements and local regulations.

Backed by our engineering expertise and full project lifecycle support, Barr + Wray’s rainwater systems offer sustainable, efficient, and cost-effective alternatives to traditional water supply—ideal for organisations seeking to improve environmental performance and reduce operational costs.

Bespoke Packaged Plant

At Barr + Wray, we specialise in the design, manufacture, and installation of bespoke water treatment plants, tailored to meet the exact requirements of each client. With over 60 years of engineering expertise, we deliver custom-built systems that ensure high performance, operational efficiency, and full compliance with industry regulations.

Our process begins with a detailed assessment of your raw water source, whether it’s borehole, surface water, seawater, or municipal supply.  We analyse the water quality and understand the specific demands of your application – whether it be potable water, industrial process water, boiler feed, or wastewater treatment.

We then engineer a fully customised solution, selecting from a wide range of proven technologies including media filtration, cartridge filtration, reverse osmosis, ion exchange, activated carbon filtration, UV disinfection, and chemical dosing.

We customise plant layout, control systems, levels of automation, and material selection to match your operational environment and space requirements. All systems can be fully integrated with SCADA or remote monitoring platforms for real-time control and diagnostics.

Our experienced team handles everything – from 3D design and fabrication to on-site commissioning and aftercare support – delivering truly turnkey solutions.

Systems can be supplied fully skid-mounted, housed within a containerised packaged plant, or installed directly within the client’s existing plantroom. This flexible approach allows Barr + Wray to meet a wide range of space, accessibility, and operational requirements across different industrial environments.

Whether you’re operating in the municipal, pharmaceutical, food + beverage, power, electronics, or leisure sector, Barr + Wray delivers bespoke water treatment plants that are built to last and designed for future scalability.