Ozone generators: NLO
High-Capacity Ozone Generators for Municipal and Industrial Water Treatment Applications
Overview
The Longking NLO Series represents the next generation of high-capacity industrial ozone generators, specifically designed for large-scale municipal and industrial water treatment plants.
Based on double micro-gap borosilicate-glass dielectric discharge technology and powered by high-frequency electronic control (5–10 kHz), the NLO Series delivers maximum ozone concentration, low energy consumption, and exceptional operational reliability.
With modular ozone production capacities ranging from 1 kg/h to 160 kg/h, these systems guarantee consistent ozone output even under continuous 24/7 operation.
The result — stable disinfection, oxidation, and micropollutant removal with minimal operating cost.
Core Technology – Double Micro-Gap Discharge
Each NLO generator features a horizontal reactor configuration with independent dielectric-electrode assemblies.
The double micro-gap discharge ensures uniform plasma distribution and a stable corona field, maximizing ozone yield while minimizing power losses.
Performance highlights:
Ozone concentration: 150 – 296 g/Nm³ (oxygen feed).
Specific energy consumption: ≤ 7.5 kWh/kg O₃.
Materials: AISI 316L / PTFE for ozone-contact components.
Dielectric: borosilicate glass, ensuring electrical and thermal stability.
Modular fusible protection: each dielectric is individually fused, ensuring > 90 % system availability.
This advanced discharge system provides high conversion efficiency, temperature uniformity, and extended equipment lifespan.
Cooling and Thermal Management
Ozone generation efficiency is strongly influenced by temperature.
Longking employs a closed-loop water cooling system with plate heat exchanger and recirculating pump group to maintain constant thermal equilibrium across all reactors.
Stable reactor temperature ensures consistent ozone output.
Dual-pump configuration provides redundancy for continuous operation.
Gas-purge and expansion vessel maintain pressure stability.
Automatic monitoring of temperature and flow ensures safe operation.
This engineered thermal control system guarantees optimum discharge conditions even under variable ambient temperatures.
High-Frequency Power Supply (PSU)
The dedicated Power Supply Unit uses high-frequency inverters and isolation transformers to generate a perfectly stable voltage waveform.
This design delivers:
Rapid response and high conversion efficiency.
Minimal harmonic distortion and electrical stress.
Long-term component stability with reduced maintenance.
Each PSU is pre-wired, factory-tested, and enclosed in a corrosion-resistant cabinet with CE-compliant protection.
Control & Automation
All NLO systems are equipped with a PLC-based control system and touchscreen HMI, allowing full integration with plant SCADA or DCS.
Main features:
Real-time monitoring of ozone output, voltage, temperature, and gas flow.
Automatic start-up and shutdown sequences.
Alarm management for temperature, power, or cooling anomalies.
Remote access and data logging through Ethernet connectivity.
This intelligent automation ensures safe, continuous, and efficient operation under any process condition.
Applications
The NLO Series is ideally suited for:
Municipal drinking-water treatment – pre-oxidation, disinfection, taste and odor control.
Wastewater treatment (EDAR) – color removal, COD/BOD reduction, micropollutant oxidation.
Water-reuse plants – advanced oxidation processes (AOP).
Industrial effluents – textile, chemical, and pharmaceutical wastewater treatment.
Technical Specifications
Capacity: 1 – 160 kg O₃/h
Feed Gas: Oxygen (PSA or LOX)Concentration150 – 296 g/Nm³
Energy Consumption: ≤ 7.5 kWh/kg O₃
Cooling: Closed-loop water circuit
Reactor Configuration: Horizontal – modular assemblies
Control System: PLC + HMI, SCADA compatible
Compliance: CE / ISO 9001 / EU Safety Standards
Why Choose Longking NLO Series
Proven double-micro-gap discharge for maximum ozone efficiency.
Modular and scalable design – up to 160 kg/h.
Intelligent automation with remote control.
Optimized energy consumption and cooling.
Fully compliant with international safety standards.
20 + years of ozone engineering experience.