Systems
Integrated treatment systems engineered for reliability and performance.
Ultrafiltration System
We design and supply complete ultrafiltration (UF) systems that remove suspended solids, bacteria, protozoa and viruses from water through pressure-driven membrane separation. Every system is purpose-engineered around your feed water quality, required output standard and downstream process requirements, configured in the right form and scale to integrate reliably into your treatment train. From system design and equipment supply through to installation, commissioning and ongoing technical support, we deliver a complete scope so your UF system performs consistently from day one.
Reverse Osmosis (RO) System
A reverse osmosis (RO) system is a high-pressure membrane separation technology that removes dissolved salts, heavy metals, bacteria, viruses and organic compounds from water by forcing feed water across a semi-permeable polyamide membrane, producing high-purity permeate water with salt rejection up to 99.8%. IWTE designs, engineers and supplies complete RO systems for seawater desalination, brackish water treatment, industrial process water purification, boiler feed demineralisation and water reuse applications across municipal, industrial and commercial sectors. Reverse osmosis is the most widely deployed technology for water desalination and purification globally, combining proven membrane performance with scalable, automated operation suitable for applications from 1 m³/day to 10,000+ m³/day. IWTE's RO systems are purpose-configured to your source water chemistry, required product quality, target flow rate and site conditions, with each system including pre-treatment, high-pressure pumping, membrane array, post-treatment and automated control as a fully integrated package. Seawater RO systems operate at 55–70 bar with energy recovery devices (ERDs) reducing specific energy consumption to 2–3 kWh/m³, while brackish water RO systems deliver 65–85% recovery at 0.5–1.5 kWh/m³. Every IWTE RO system is designed for long membrane life through correct pre-treatment, integrated CIP protocols and detailed operating procedures. PLC/SCADA automation with remote monitoring capability enables unattended or minimally staffed operation as standard. IWTE provides a complete project scope from engineering design through equipment supply, installation, commissioning, operator training and long-term service support.
Ion Exchange
An ion exchange (IX) system is a water treatment technology that removes dissolved ions from water by passing feed water through a resin bed that selectively replaces target ions, such as calcium, magnesium, sodium or heavy metals, with less harmful substitute ions or produces deionised water through a combination of cation and anion exchange resins. IWTE designs and supplies ion exchange systems for water softening, demineralisation, selective ion removal and ultra-pure water polishing across industrial, commercial, power generation and municipal applications. Water softening using cation exchange is one of the most common IX applications, replacing hardness-causing calcium and magnesium ions with sodium to prevent scaling in boilers, heat exchangers, cooling systems and membrane systems. Two-bed and mixed-bed demineralisation systems use both cation and anion exchange resins to produce high-purity deionised water for boiler feed, electronics, pharmaceutical and precision industrial processes. IWTE's IX systems are engineered with correctly sized resin volumes, optimised regeneration cycles and chemical dosing to maximise resin service life and minimise salt and chemical consumption. Each system is available in simplex, duplex or multi-train configurations to deliver continuous or duty-standby operation based on flow and quality requirements. Ion exchange systems are frequently deployed downstream of RO to achieve ultra-low conductivity or specific ion concentrations that membrane filtration alone cannot deliver. IWTE provides complete system design, equipment supply, installation, commissioning and resin replacement services supported by ongoing technical and analytical support.
Mixed Bed Demineralization System
A mixed bed demineralization (MB) system uses an intimate mixture of strong acid cation and strong base anion exchange resins in a single pressure vessel to produce ultra-pure, high-conductivity water from pre-treated or RO permeate feed water. IWTE designs and supplies mixed bed systems for applications requiring the highest levels of water purity, including power generation, electronics manufacturing, semiconductor fabrication, pharmaceutical production and laboratory water supply. Mixed bed systems achieve effluent conductivity below 0.1 µS/cm and resistivity approaching 18.2 MΩ·cm, water quality that two-bed IX systems and RO alone cannot deliver. IWTE's mixed bed units are engineered as standalone polishers or as the final stage in a multi-step deionisation train that includes upstream two-bed IX, RO or electrodeionisation (EDI) pre-treatment. Each system is designed with correct resin volume, regeneration chemistry and separation and re-mixing protocols to ensure consistently high effluent quality through each service cycle. Duplex configurations with online regeneration capability ensure continuous high-purity water supply without production interruption, critical for power plant condensate polishing and continuous manufacturing processes. IWTE supplies complete mixed bed systems including pressure vessels, resin, regeneration chemical dosing, conductivity monitoring, control panels and all interconnecting pipework and valves. Our project scope includes system design, equipment supply, installation, commissioning and resin regeneration support services.
Electrodeionization (EDI)
An electrodeionization (EDI) system is a continuous, chemical-free ion removal technology that combines ion exchange resin beds, ion-selective membranes and a low-voltage direct current to remove dissolved ions from RO permeate and produce consistently high-purity deionised water without the need for acid and caustic regeneration chemicals. IWTE designs and supplies EDI systems for pharmaceutical purified water (PW) production, power generation, electronics and semiconductor manufacturing, laboratory water supply and any application requiring continuous high-purity water above the capabilities of RO alone. EDI is the preferred final polishing technology for pure water systems operating under cGMP or equivalent quality frameworks, offering chemical-free operation, continuous output, reduced operator involvement and a smaller environmental footprint than conventional mixed bed demineralisation. IWTE's EDI systems achieve product water conductivity below 0.1 µS/cm when fed with correctly pre-treated RO permeate meeting defined silica, hardness and free chlorine limits. Each system is sized for the required permeate flow rate with pre-treatment upstream validated to protect EDI module performance and maximise module service life. IWTE integrates EDI as the final polishing stage in complete ultra-pure water systems that include multi-stage pre-treatment, RO and EDI in a fully automated, validated package. Systems are designed for 21 CFR Part 11 compliance and GAMP validation support where pharmaceutical applications require it. Our scope covers complete system design, equipment supply, installation, commissioning, IQ/OQ/PQ validation support and ongoing service and module replacement programmes.
Ozone Sterilization
An ozone sterilization system generates ozone (O₃) on-site and applies it to water as a powerful oxidising and disinfecting agent, inactivating bacteria, viruses, protozoa and a broad range of organic micropollutants and taste- and odour-causing compounds without leaving persistent disinfection by-products in treated water. IWTE designs and supplies ozone sterilization systems for municipal drinking water treatment, bottled water production, food and beverage processing, pharmaceutical water systems, swimming pool and recreational water treatment, and industrial process water disinfection. Ozone is one of the most effective broad-spectrum disinfectants available, delivering 3,000 times greater germicidal action than chlorine and degrading endocrine-disrupting compounds, pharmaceuticals and pesticide residues that conventional chlorination cannot remove. IWTE's ozone systems incorporate on-site ozone generators, using corona discharge technology, alongside ozone contact vessels, ozone dissolution systems, off-gas treatment and safety monitoring, delivering a complete, safely managed disinfection solution. System capacity is matched to the required flow rate and CT (concentration × time) targets for pathogen inactivation and oxidation objectives. Ozone decomposes rapidly to oxygen in treated water, eliminating persistent disinfectant residuals and making it particularly suited to applications where chemical-free treated water is required. Each system is designed with safety interlocks, ambient ozone monitoring and emergency shutdown as standard to ensure safe operation within occupied environments. IWTE provides full engineering design, equipment supply, installation, commissioning and operator safety training for every ozone system deployment.
UV Disinfection
A UV disinfection system exposes water to high-intensity ultraviolet light at a wavelength of 254 nm, disrupting the DNA and RNA of bacteria, viruses and protozoa, inactivating pathogens without the addition of chemicals or the generation of disinfection by-products. IWTE designs and supplies UV disinfection systems for municipal drinking water treatment, wastewater effluent polishing, water reuse schemes, food and beverage production, pharmaceutical water systems and industrial process water applications requiring reliable, chemical-free pathogen control. UV disinfection is effective against chlorine-resistant pathogens including Cryptosporidium and Giardia, making it the recommended final barrier in drinking water and water reuse treatment trains where protozoan control is a regulatory requirement. IWTE's UV systems use high-output low-pressure or medium-pressure UV lamps housed in stainless steel reactors with validated dose delivery, UV intensity monitoring and automatic lamp wiping to maintain consistent disinfection performance. System sizing is based on required UV dose (typically 40 mJ/cm² for potable water disinfection and 80–100 mJ/cm² for water reuse), flow rate, UV transmittance of the feed water and applicable regulatory standards. UV systems have no impact on water chemistry, taste or odour, making them ideal as a final polishing step or as a supplemental disinfection stage alongside chlorination. Each system is supplied with UV intensity sensors, dose monitoring, lamp hour counters and automated control integration for reliable operation and audit trail compliance. IWTE provides complete system design, equipment supply, installation, commissioning and UV lamp replacement programmes.
Chlorination
A chlorination system applies chlorine, as sodium hypochlorite solution, chlorine gas or calcium hypochlorite, to treated water at controlled doses to inactivate bacteria, viruses and other pathogens and to maintain a disinfectant residual through the distribution network. IWTE designs and supplies chlorination systems for municipal drinking water treatment, swimming pools and recreational water, cooling towers, wastewater effluent disinfection, irrigation water and industrial process water applications where a maintained disinfectant residual is required for regulatory compliance and public health protection. Chlorination is the most widely used water disinfection method globally, valued for its effectiveness against a broad spectrum of pathogens, residual persistence through distribution systems and proven reliability at scale. IWTE's chlorination systems include dosing pumps, chemical storage, flow-proportional or residual-based dosing control, mixing devices and online chlorine residual analysers, configured for safe, accurate and continuous chlorine application. Sodium hypochlorite (NaOCl) dosing systems are the most commonly supplied for drinking water and wastewater applications, offering safe chemical handling and suitability for remote or automated installations. Chlorine gas systems are available for high-capacity municipal applications where precision dosing and lower unit chemical cost are priorities, with full safety enclosures and gas detection provided as standard. Each chlorination system is designed to achieve target CT values for pathogen inactivation while managing chlorine by-product formation within regulatory thresholds. IWTE provides complete engineering design, chemical storage design, installation, commissioning and operator safety training for all chlorination system installations.
MBR (Membrane Bioreactor)
A membrane bioreactor (MBR) system combines activated sludge biological treatment with membrane filtration, typically ultrafiltration, in a single integrated process, producing high-quality clarified and disinfected effluent in a significantly smaller footprint than conventional secondary treatment followed by tertiary filtration. IWTE designs and supplies MBR systems for municipal sewage treatment, industrial wastewater treatment and water reuse applications where compact plant footprint, high effluent quality and reuse-suitable treated water are critical requirements. MBR technology delivers consistent effluent quality with low BOD, COD, TSS and pathogen concentrations, typically meeting reuse standards for irrigation, industrial supply and indirect potable reuse without additional tertiary polishing. IWTE's MBR systems use submerged hollow-fibre or flat-sheet ultrafiltration membrane modules operating in the mixed liquor of the biological reactor, providing physical removal of suspended solids and biomass regardless of biological performance variability. System design incorporates correct membrane flux, aeration and crossflow management, backwash and relaxation cycles, chemical cleaning protocols and membrane integrity testing to sustain membrane performance over the full service life. MBR systems are particularly advantaged in space-constrained environments, delivering secondary and tertiary treatment equivalent in up to 50% less footprint than conventional activated sludge and clarifier systems. IWTE's MBR plant designs are scalable from small packaged systems to large municipal facilities, with modular membrane configuration allowing future capacity expansion without major civil works. Our complete project scope covers process design, equipment supply, civil interface, installation, commissioning, membrane performance validation and ongoing maintenance support.
MBBR (Moving Bed Biofilm Reactor)
A moving bed biofilm reactor (MBBR) system uses plastic carrier media suspended in an aerated reactor basin to support dense biofilm communities that biologically degrade organic compounds, ammonia and nutrients from wastewater, delivering high biological treatment efficiency in a compact, robust and low-maintenance process configuration. IWTE designs and supplies MBBR systems for municipal sewage treatment, industrial wastewater treatment and retrofit upgrading of existing activated sludge plants requiring increased biological capacity or nutrient removal within existing tankage. MBBR technology combines the stability advantages of fixed-film biofilm processes with the operational simplicity of suspended growth systems, without the need for sludge return, secondary settlers or complex process control. IWTE's MBBR systems are designed with correct carrier media fill fraction, aeration intensity, hydraulic retention time and carrier retention screens to achieve required BOD, COD, ammonia and total nitrogen removal targets. The carrier media provides large protected surface area for biofilm colonisation, enabling high volumetric treatment rates and resistance to shock loads, toxic influent events and temperature variation. MBBR is particularly well suited to upgrading existing wastewater treatment plants, adding media and aeration to existing tanks to increase capacity or improve effluent quality without constructing new tankage. Combined MBBR-IFAS (integrated fixed-film activated sludge) configurations are available where higher effluent standards or specific nutrient removal requirements necessitate a hybrid approach. IWTE provides full process design, media supply, mechanical and electrical installation, commissioning and long-term operations support for MBBR system projects.
Activated Sludge
An activated sludge (AS) system is the most widely deployed biological wastewater treatment process globally, using a culture of microorganisms, maintained in suspension within aerated reactor basins, to biodegrade organic compounds, remove nutrients and produce a clarified, treated effluent suitable for discharge or further polishing. IWTE designs and supplies activated sludge systems for municipal sewage treatment plants, industrial effluent treatment facilities and upgrade projects where biological oxygen demand (BOD), chemical oxygen demand (COD), ammonia and nutrient removal are required to meet consent conditions. The activated sludge process operates by aerating mixed liquor in biological reactors to sustain the microbial community, followed by sedimentation in secondary clarifiers where biomass settles and a proportion is returned to the reactor (return activated sludge) to maintain treatment performance. IWTE's AS system designs cover conventional activated sludge, extended aeration, sequencing batch reactor (SBR) and oxidation ditch configurations, selected based on effluent requirements, site constraints and operational preferences. Each system is engineered for correct mixed liquor suspended solids (MLSS) concentration, sludge retention time (SRT), dissolved oxygen setpoints and sludge management to achieve consistent treatment performance and stable operation. Process control systems incorporate online monitoring of dissolved oxygen, ammonia, nitrate and sludge level, with automated aeration control to optimise energy consumption and treatment quality. IWTE's activated sludge designs integrate sludge thickening, dewatering and disposal options as a complete biological treatment and sludge management package. Our scope covers process engineering, civil interface, mechanical and electrical supply, installation, commissioning and operator training.
Chemical Dosing Systems
A chemical dosing system is an engineered assembly of dosing pumps, chemical storage tanks, mixing and injection points, flow measurement and control instrumentation that delivers precise, automated quantities of treatment chemicals into a water or wastewater stream to achieve defined treatment objectives. IWTE designs and supplies chemical dosing systems for coagulation and flocculation, pH correction, antiscalant and corrosion inhibitor dosing, disinfection, dechlorination, nutrient removal and a wide range of water and wastewater treatment applications. Accurate, reliable chemical dosing is fundamental to the performance of every water treatment plant, protecting membranes from scaling and fouling, achieving target effluent quality and ensuring safe, compliant treated water production. IWTE's chemical dosing systems are engineered for the specific chemical, concentration, flow range and control logic of each application, using diaphragm or peristaltic dosing pumps, chemical-resistant materials and calibrated metering to ensure accuracy across the full operating range. Each system includes day tanks with level monitoring, secondary containment, dosing pump control panels with flow-proportional or feedback dosing capability, and integration with the plant PLC/SCADA system. Chemical storage and handling design complies with applicable safety regulations, with bunded storage, emergency shower and eyewash, chemical-compatible materials and access arrangements for safe chemical delivery and management. IWTE supplies chemical dosing systems as standalone skid-mounted units or as fully integrated subsystems within complete water treatment plants. Our scope covers P&ID design, equipment supply, skid fabrication, installation, commissioning and operator training for all chemical handling systems.
pH Adjustment Systems
A pH adjustment system controls the acidity or alkalinity of water or wastewater by precisely dosing acid (typically sulphuric or hydrochloric acid) or alkali (sodium hydroxide or soda ash) to achieve a target pH range required for downstream treatment processes, equipment protection or discharge compliance. IWTE designs and supplies pH adjustment and correction systems for reverse osmosis pre-treatment and post-treatment, coagulation and flocculation optimisation, ion exchange regenerant management, effluent discharge compliance and any water treatment application where pH is a critical process parameter. Correct pH control is essential for RO membrane protection, preventing carbonate scaling at high pH and membrane degradation at low pH, and for optimising coagulant performance, biological treatment activity and disinfection effectiveness. IWTE's pH correction systems use high-accuracy dosing pumps, inline pH sensors, control loops with PID tuning, chemical storage with secondary containment and dosing injection points designed for rapid, complete chemical dispersion in the water stream. Each system is designed for the chemical dose range, flow variability and pH setpoint of the specific application, with dual-pump configurations for duty-standby reliability on critical processes. Safety design incorporates chemical-resistant materials, bunded storage, emergency response provisions and interlocked control to prevent overdosing events that could damage downstream equipment or produce out-of-specification water. pH adjustment systems are supplied as standalone skid-mounted packages or integrated within complete water treatment plant designs. IWTE provides full system design, equipment supply, installation, commissioning and calibration services for all pH control applications.
Coagulation / Flocculation
A coagulation and flocculation system applies coagulant chemicals, typically aluminium sulphate, ferric chloride or polyaluminium chloride, to raw or partially treated water to destabilise suspended colloidal particles, allowing them to aggregate into larger, settleable or filterable floc. IWTE designs and supplies coagulation and flocculation systems for municipal water treatment plants, industrial pre-treatment processes, wastewater clarification and any application where turbidity, colour, suspended solids or colloidal contaminants must be removed from a water or effluent stream. Coagulation and flocculation are typically the first treatment steps after screening in a conventional water treatment plant, and their performance directly determines the efficiency and reliability of downstream sedimentation and filtration stages. IWTE's coagulation and flocculation systems include coagulant and flocculant dosing assemblies, rapid mix units for coagulant dispersion, flocculation basins with gentle variable-speed mixing, and pH adjustment where required to optimise coagulation chemistry. Jar testing and treatability analysis inform coagulant selection, dose optimisation and mixing energy requirements for each specific raw water source, ensuring the system is correctly designed before commissioning. Polymer flocculant dosing systems are integrated where enhanced floc settling or dewatering performance is required, particularly for clarifier sludge management and sludge dewatering applications. Each system is designed for reliable, low-maintenance automated operation with dosing control proportional to flow or turbidity feedback and integrated with plant-wide PLC/SCADA control. IWTE provides complete system design, equipment supply, installation, commissioning and operator training, including coagulant selection support and ongoing process optimisation.
Packaged Treatment
A packaged water treatment system is a factory-assembled, pre-engineered treatment solution incorporating all process equipment, pipework, instrumentation and controls within a compact, self-contained skid or frame, ready for rapid site installation, connection and commissioning with minimal civil infrastructure. IWTE designs and supplies packaged water treatment systems for remote sites, temporary supply projects, capacity augmentation, emergency water supply and applications where project timeline, limited site access or restricted civil works budget favour a pre-built modular approach over conventional site-constructed plant. Packaged systems reduce on-site construction time, minimise construction-phase quality risk and allow factory testing and pre-commissioning before delivery, significantly accelerating the project programme from contract award to first water production. IWTE's packaged treatment systems cover the full range of treatment technologies, including pre-filtration, coagulation, ultrafiltration, reverse osmosis, softening, disinfection and chemical dosing, configured to the specific water source, quality targets and flow rate of each project. Each packaged system is engineered to the same technical standards as site-built plants, with detailed hydraulic design, P&IDs, SCADA-ready control panels and full documentation packages provided as standard. Packaged systems are available as trailer-mounted, container-housed or open-skid configurations, offering flexibility for permanent installation, transportable deployment or rapid relocation between project sites. IWTE's factory assembly and testing programme reduces commissioning risk and shortens site mobilisation time, delivering operational water treatment earlier in the project schedule. Our scope covers system design, fabrication, factory acceptance testing (FAT), delivery, site installation, commissioning and operator training.
Containerized Treatment
A containerised water treatment unit integrates a complete water treatment system, including process equipment, pipework, instrumentation, electrical distribution and controls, within a standard ISO shipping container, creating a fully self-contained, transportable and rapidly deployable water production unit. IWTE designs and supplies containerised treatment units for emergency water supply, humanitarian response, military and remote base camps, mining operations, construction sites, offshore facilities and any application where a permanent facility is impractical or project duration does not justify conventional plant construction. Container-housed systems offer the highest level of factory integration, fully assembled, wired, plumbed and tested before shipment, allowing site commissioning in days rather than the weeks or months required for site-built alternatives. IWTE's containerised units are available in standard 10-foot, 20-foot and 40-foot ISO container formats, with insulated and air-conditioned enclosures for operation in extreme temperature environments from below-zero to high-desert conditions. Treatment technology options include containerised RO desalination, ultrafiltration, iron and manganese removal, multi-media filtration, chemical dosing and UV disinfection, configured as standalone units or connected as a modular treatment train. Each unit incorporates generator-ready electrical design, solar power compatibility, bunded chemical storage and all ancillaries required for completely independent operation. IWTE's containerised units are engineered for rapid repeated relocation, including structural reinforcement, transport tie-down points and lift-safe certified lifting frames as standard. Our scope covers full system design, container fit-out, factory acceptance testing (FAT), shipping support, site commissioning and operator training.
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