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Industrial & Commercial Water Purification Systems: Modular RO, UF, and Treatment Solutions

Industrial and municipal water treatment projects require equipment engineered for stable continuous operation, strict permeate quality, and predictable lifecycle operating costs. This page serves procurement engineers, EPC contractors, and system integrators looking for factory-direct water purification equipment—including skid-mounted reverse osmosis units, containerized plants, ultrafiltration systems, and supplementary environmental hardware. Built to match precise hydraulic and chemical parameters, these systems eliminate scaling risks, minimize energy consumption per cubic meter of permeate, and integrate directly into existing plant automation architectures.

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Solutions

Municipal & Community Drinking Water Supply

Containerized and skid-mounted high-capacity reverse osmosis systems designed to reduce total dissolved solids (TDS), heavy metals, and microbiological contaminants below WHO drinking water standards.

Industrial Process Water Preparation

Multi-stage purification units supplying boiler feed water, electronics rinsing water, and manufacturing dilution water with controlled conductivity.

Commercial Bottled Water Production

Compact multi-filtration and RO lines engineered for continuous sanitary operation, stable flow output, and automated CIP (Cleaning-in-Place) compatibility.

Remote & Mobile Infrastructure

Plug-and-play containerized water treatment stations equipped with integrated power distribution, climate control, and pre-filtration for off-grid or emergency deployment.

Product Category

Category / Model	Core Technology	Capacity Range	Primary Material	Target Application
LK-RO-C Series	Containerized Reverse Osmosis	3,000–10,000 L/h	Carbon Steel Container / SS304 Internal Piping	Remote sites, municipal water supply, rapid deployment
LK-RO-S Series	Skid-Mounted Industrial RO	500–5,000 L/h	SS304 / SS316L Frame and Pressure Vessels	Factory process water, boiler feed, commercial production
LK-UF Series	Pressure-Driven Ultrafiltration	2,000–20,000 L/h	PVDF / PVC-U Hollow Fiber Membranes	Surface Water Pretreatment, High-Turbidity Removal
LK-MF Series	Multi-Media and Activated Carbon Pretreatment	Customized to Flow	FRP / Carbon Steel Rubber-Lined Tanks	Suspended Solids Reduction, Chlorine and Organic Removal
LK-NaClO Series	On-Site Electrolytic Generation	50–500 g/h as Cl₂	Titanium Electrodes with Ruthenium-Iridium Coating	Disinfection, Wastewater Sterilization, Municipal Dosing

System Configuration

01/

Pretreatment Subsystem: Multi-media filters containing graded quartz sand and anthracite remove suspended solids and turbidity down to less than 20 NTU. Activated carbon filters absorb free chlorine and organic molecules to protect downstream polyamide membranes from oxidation.

02/

Chemical Dosing Unit: Automated dosing pumps inject antiscalant to prevent mineral precipitation (calcium carbonate, silica) on membrane surfaces, alongside pH adjustment chemicals when required by raw water chemistry.

03/

Security Filtration (Cartridge Filter): 5-micron polypropylene (PP) melt-blown cartridge filters capture fine particulates escaping the primary media bed, preventing mechanical damage to high-pressure pump impellers.

04/

High-Pressure Pumping Section: Vertical multi-stage centrifugal pumps (such as Grundfos or equivalent industrial grade) supply the requisite hydraulic pressure (1.0 to 2.5 MPa depending on feed salinity) required to overcome osmotic pressure.

05/

Membrane Separation Assembly: Spiral-wound composite polyamide RO membranes housed in FRP or stainless steel pressure tubes execute selective ion and molecule separation.

06/

Electrical & Control Cabinet: Centralized PLC controller (Siemens S7-1200 series or Schneider equivalent) coupled with real-time digital sensors monitoring feed pressure, permeate conductivity, flow rates, and tank level interlocks.

Treatment Process

Stage	Process Description	Primary Equipment / Media	Target Removal Metric
Stage 1	Coarse and Suspended Solids Removal	Disc Filter / Raw Water Pump	Suspended solids >50 μm
Stage 2	Coagulation and Filtration	Multi-Media Filter (Quartz Sand / Anthracite)	Turbidity <1.0 NTU; SDI <5
Stage 3	Adsorption and Dechlorination	Activated Carbon Filter	Free chlorine <0.1 mg/L; organics and residual odor
Stage 4	Scale Inhibition and Fine Filtration	Micro-Dosing Pump + 5 μm PP Cartridge	Colloidal particles; prevention of hardness precipitation
Stage 5	Reverse Osmosis / Ultrafiltration	High-Pressure Pump + RO/UF Membrane Elements	95–99.4% TDS removal; up to 99.9% bacteria/virus removal
Stage 6	Post-Treatment and Disinfection	UV Sterilizer / Mineralization Cartridge / Chlorine Dosing	Final microbiological safety; balanced pH and mineral profile

Applications

Microfiltration (MF) Solid-Liquid Separation System

Food & Beverage Manufacturing

Ingredient water preparation, rinsing lines, and clean-in-place water supply requiring strict microbiological purity.

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Power Generation & Boilers

High-purity makeup water for low-pressure and medium-pressure boilers, preventing scale formation and turbine blade corrosion.

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Chemical & Pharmaceutical Processing

Process water for chemical synthesis washing, laboratory support, and secondary equipment cleaning loops.

Skid-Mounted NF System For Process Liquid Purification

Municipal & Rural Utilities

Centralized drinking water stations and containerized purifying plants for isolated communities or disaster relief operations.

Technical Specifications

Category	Parameter	Specification
Feedwater Requirements	Total Dissolved Solids (TDS)	<2,000 mg/L; higher salinity configurations available with customized design
	Feedwater Temperature	5–40 °C
	Inlet Pressure	0.2–0.4 MPa
	SDI (Silt Density Index)	<5
Electrical Specifications	Standard Operating Voltage	380 V / 415 V, 3-phase, 50/60 Hz
	Regional Power Adaptation	Custom transformers available for specific regional grids
	Control Voltage	24 V DC
Performance Parameters	System Recovery Rate	50–75%; adjustable via concentrate recycling valves
	Desalination Rate	≥97–99.4%, depending on membrane selection
	Permeate Conductivity	<10 μS/cm; dual-pass systems can achieve <1 μS/cm
Materials of Construction	Skids and Frames	Carbon structural steel with anti-corrosive epoxy coating or SS304 with pickling-passivated finish
	Low-Pressure Piping	UPVC Schedule 80 or PPR
	High-Pressure Piping	SS304 / SS316L seamless stainless steel tubing
	Pressure Vessels	Fiberglass Reinforced Plastic (FRP), rated to 300/450 psi

Selection Guide

Raw Water Source Analysis: Obtain a complete water quality lab report covering TDS, hardness (CaCO3), silica (SiO2), iron, manganese, and SDI. High silica or iron levels require specific pretreatment softening or catalytic oxidation modules prior to RO entry.

Required Permeate Flow Rate: Calculate peak hourly demand (m3/h) and daily consumption volume. Factor in a 15 percent safety margin for membrane flux decline over a 3-year operating lifecycle.

Permeate Quality Standards: Define maximum allowable conductivity (uS/cm) or specific ion limits based on downstream industrial or drinking water mandates.

Installation Environment: Determine whether the system will be housed inside an existing mechanical room (skid-mounted configuration) or deployed outdoors in variable weather conditions (ISO containerized configuration with insulation and HVAC).

Power Availability: Confirm local industrial power supply parameters (voltage, phase, frequency) to match pump motor and control panel electrical ratings.

Ultrapure RO Water System With EDI Integration

Manufacturing and Quality Control

Structural Fabrication: Skid frames are assembled using laser-cut structural steel profiles, welded by certified personnel (ISO 9606 standards), and treated with abrasive blast cleaning followed by multi-layer marine-grade epoxy painting to resist humid, corrosive environment exposure.

Pressure Vessel & Piping Integration: High-pressure stainless steel piping undergoes argon-arc welding (TIG) with internal purge protection to eliminate weld oxidation and prevent micro-crevice bacterial growth.

Hydrostatic Pressure Testing: Every assembled skid undergoes a 24-hour hydrostatic pressure test at 1.5 times maximum working pressure prior to electrical integration, verifying zero leakage across all flanged, threaded, and welded joints.

Electrical Wiring & PLC Burn-In: Control panels are wired according to IEC standards with numbered terminal blocks, segregated power and signal conduits, and a 48-hour continuous functional burn-in test of the PLC program, solenoid valves, and pump interlocks.

Factory Acceptance Testing (FAT): Prior to crating, systems undergo dry-run and wet-run simulation testing where flow meters, pressure transmitters, conductivity probes, and automatic flush cycles are calibrated against design specifications.

Organics Removal NF Water Purification Unit

Customized Options

Dual-Pass RO Systems: Integration of a second-pass high-pressure pump and membrane array for ultra-pure applications requiring conductivity less than 2 uS/cm.

Energy Recovery Devices (ERD): Incorporation of isobaric energy recovery or turbochargers for high-salinity water feeds to reduce system specific energy consumption by up to 40 percent.

Containerized Insulation & Climate Control: ISO shipping containers modified with rockwool insulation, interior lighting, ventilation fans, split-unit air conditioning, and freeze-protection heating strips.

Automated CIP (Cleaning-in-Place) Skids: On-board chemical mixing tanks, electric heaters, and dedicated low-pressure flush pumps to automate membrane cleaning cycles without dismantling piping.

Telemetry & Remote Monitoring: IoT gateway integration supporting Modbus TCP/IP, Profibus, or 4G cellular routers for remote supervisory control and data acquisition (SCADA).

Our Certificate

FAQ

Q: How do we determine whether a skid-mounted RO system or a containerized unit is better suited for our project site?

A: Skid-mounted systems are designed for installation inside existing, climate-controlled plant mechanical rooms where floor space and overhead protection are already established. Containerized units are built inside modified ISO shipping containers, providing a weatherproof, pre-wired, and pre-piped plug-and-play station ideal for remote locations, outdoor installations, or sites lacking dedicated indoor infrastructure.

Q: What pretreatment steps are necessary if our raw water has high SDI and elevated hardness?

A: Raw water with high Silt Density Index (SDI greater than 5) and hardness requires a multi-stage pretreatment train. This typically includes a multi-media filter (quartz sand and anthracite) to reduce turbidity, an activated carbon filter to remove oxidants, an automatic ion-exchange water softener or continuous antiscalant dosing system to prevent calcium and magnesium scaling on the RO membranes, followed by 5-micron security cartridge filtration.

Q: What is the typical service lifespan of industrial RO membranes, and what factors accelerate replacement?

A: Industrial polyamide RO membranes typically operate effectively for 3 to 5 years under proper maintenance regimes. Factors that accelerate membrane degradation and flux decline include inadequate pretreatment (allowing free chlorine to oxidize the polymer matrix, high SDI causing physical particulate fouling, or unchecked silica/calcium scaling), operating outside acceptable pH limits, and failing to execute periodic chemical cleanings.

Q: Can the system control panel integrate with our facility's existing SCADA or central PLC network?

A: Yes. Standard electrical enclosures utilize Siemens or Schneider PLCs equipped with standard industrial communication protocols such as Modbus RTU, Modbus TCP/IP, or Profibus DP. This enables plant operators to monitor real-time operating parameters—including permeate flow, recovery rate, operating pressure, and tank levels—directly from a central control room.

Q: What is the standard factory testing procedure before equipment is packed and shipped internationally?

A: Every water purification system undergoes rigorous Factory Acceptance Testing (FAT), including structural weld inspections, a 24-hour hydrostatic pressure test at 1.5 times working pressure, electrical circuit verification, and a 48-hour PLC burn-in test. For wet-tested units, pre-shipment functional checks verify pump cavitation thresholds, valve actuation timing, and sensor calibration.

Q: What export crating and documentation are provided for overseas maritime shipping?

A: Equipment is secured on heavy-duty steel base skids or enclosed within steel shipping containers, wrapped in anti-corrosion moisture barrier films, and packed inside fumigated plywood crates compliant with ISPM 15 standards. Documentation packages include comprehensive English operation and maintenance manuals, P&ID schematics, electrical wiring diagrams, factory test reports, and component manufacturer data sheets.

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