Longking EnTech Europe: High-Capacity Ozone Generators - NLO range
High-Capacity Ozone Generators & Turnkey Ozone Systems for Water Treatment (NLO Series)
When a water treatment plant moves beyond “standard” ozonation and enters high-capacity ozone generation, the project stops being only about kg/h. Reliability, automation, oxygen logistics, contacting efficiency, off-gas management, safety design and lifecycle service become the real differentiators.
Longking EnTech Europe designs and delivers high-capacity ozone generators and turnkey ozone systems for drinking water, wastewater, water reuse and industrial applications—engineered for demanding utilities where continuous operation, energy performance and process control are non-negotiable.
This page explains the fundamentals of high-capacity ozone systems, the key design choices that drive performance and OPEX, and how the NLO platform supports robust multi-barrier treatment strategies.
What “High-Capacity” Means in Ozonation Projects
In municipal and industrial contexts, “high-capacity” typically refers to installations delivering tens to hundreds of kilograms of ozone per hour, often distributed across multiple generators for redundancy and load management.
At this scale, the critical question is not only “How much ozone can we produce?” but also:
Can we maintain stable output under variable operating conditions?
Is the system engineered to maximise ozone transfer efficiency in the contactor?
How are oxygen supply, energy use and maintenance affecting lifecycle cost?
What safety and compliance features are built-in from day one?
Where High-Capacity Ozone Systems Create the Most Value
High-capacity ozone installations are typically deployed for:
Drinking water treatment: pre-ozonation, intermediate ozonation, taste & odour control, oxidation of organics and metals (Fe/Mn), support to biological filtration
Process intensification: improved biodegradability prior to BAC/GAC and more stable downstream filtration performance
Wastewater & reuse: enhanced effluent quality, micropollutant reduction (process-dependent), support to reuse targets
Industrial applications: oxidation for process protection and reduction of chemical consumption where feasible
NLO Ozone Generators – Platform Overview
Longking’s NLO ozone generators are designed as a scalable platform for high-capacity projects. The architecture is modular, enabling configuration to match plant philosophy (redundancy, automation level, oxygen supply strategy, integration constraints).
System Architecture (Beyond the Generator)
A high-capacity ozone plant is a system of systems. A typical turnkey scope includes:
Oxygen supply (LOX, PSA or other project-specific solution)
Ozone generator modules (NLO) and power supply
Cooling and thermal management (project-dependent)
Ozone distribution and injection equipment
Contactor integration and hydraulic considerations
Off-gas treatment and ozone destructors
Instrumentation, safety interlocks and automation
Commissioning, training and lifecycle support
Key Design Choices That Define Performance and OPEX
1) Mass Output (kg/h) vs Concentration (wt%)
Many tenders focus on kg/h, but concentration and transfer efficiency are just as important. The “effective ozone delivered to water” depends on:
Ozone concentration and gas flow
Contacting method (diffusers/injectors)
Hydraulics and mixing
Water temperature and quality conditions
Off-gas management and residual control
A well-designed system targets not only production capacity but also stable, controllable dosing aligned with treatment objectives.
2) Oxygen Supply Strategy — LOX vs PSA
Oxygen strategy is one of the biggest drivers of lifecycle cost and operational resilience.
LOX-based oxygen supply is often selected when:
Maximum stability and high-performance operation is required
Logistics and storage are manageable
Plants prioritise predictable oxygen quality
PSA oxygen supply is often selected when:
On-site generation reduces dependency on deliveries
Space and utilities allow PSA installation
The project favours operational autonomy and optimised logistics
In many cases, the best choice is site-specific: CAPEX vs OPEX, footprint, resilience strategy and local supply constraints.
3) Redundancy and Load Management
High-capacity plants typically use multiple generator units to:
Maintain output during maintenance
Operate efficiently at partial loads
Increase overall availability and resilience
Modular architectures also simplify expansion and future upgrades.
Contactor Efficiency, CFD and “Delivered Ozone”
In high-capacity drinking water and reuse projects, hydraulic behaviour and contactor efficiency strongly impact results. That’s why advanced projects include:
Contact chamber assessment and optimisation (e.g., CFD studies when justified)
Evaluation of short-circuiting risks and effective contact time
Optimised injection and mixing to improve ozone transfer efficiency
Control philosophy aligned with CT targets (where applicable)
This approach shifts the discussion from “installed ozone” to measurable process performance.
Automation, Instrumentation and Remote Monitoring
High-capacity ozone plants require tight process control, traceability and rapid diagnostics. The NLO platform can include:
PLC + HMI with production control and system diagnostics
SCADA integration (project-dependent)
Dew point monitoring and oxygen quality supervision
Ambient ozone leak detection and safety interlocks
Optional remote monitoring (e.g., SENTINEL™) for alarms, trending and maintenance support
Automation is not a “nice-to-have” at scale: it is how you protect uptime, energy performance and operator safety.
Safety and Compliance Considerations
Ozone is highly effective, but high-capacity systems must be engineered with robust safety in mind:
Off-gas ozone destruction and vent management
Ventilation strategy, leak detection and emergency shutdown logic
Materials selection and pressure/flow safety concepts
Documentation aligned with end-user and regulatory requirements
For drinking water, ozonation must also be designed to manage by-product risk (e.g., bromate in bromide-containing waters) through correct process design, control strategy and operating window definition.
Turnkey Delivery and Lifecycle Support
Longking EnTech Europe supports projects end-to-end, including:
Process and integration engineering
FAT documentation and pre-commissioning support
Installation supervision, commissioning and operator training
Spares strategy and lifecycle service plans
Performance support through monitoring and maintenance planning
Ozone as Part of a Multi-Barrier Strategy (Ozone + UV)
In advanced treatment trains, ozone is frequently combined with UV disinfection and other barriers to increase robustness—particularly where plants aim to reduce chemical consumption and improve performance under variable water quality. In this context, ozone strengthens oxidation and upstream conditioning, while UV adds a reliable final disinfection barrier.
FAQ – Common Questions About High-Capacity Ozone Generators
How do I size a high-capacity ozone system?
Start from treatment objectives and water quality, then define dosing strategy, contactor performance, redundancy level and oxygen supply philosophy.
Is LOX always better than PSA?
Not always. LOX offers high stability; PSA can provide autonomy. The optimal choice depends on logistics, utilities, footprint and lifecycle economics.
What matters most: ozone concentration or kg/h?
Both—because delivered ozone is driven by production, concentration and transfer efficiency in the contactor.
How do you manage bromate risk in drinking water?
Through process design and control (operating window), monitoring strategy and site-specific water quality evaluation.
What automation is recommended?
At minimum: production control, dew point/oxygen quality supervision, leak detection, alarm management and SCADA integration.
Can you retrofit into existing contact chambers?
Often yes, but performance depends on hydraulics and injection strategy; a technical assessment (and sometimes CFD) is recommended.
If you are evaluating a high-capacity ozone generator or turnkey ozone system for drinking water, wastewater or reuse, our team can support you from concept to commissioning.
Ozone is not the future — it’s the now. And Longking EnTech is here to help you deploy it efficiently, safely, and sustainably.
For more information, contact our commercial department at info@longkingeu.com .