Longking EnTech Europe Ultraviolet Water Disinfection: Efficiency, Safety, and Cutting-Edge Technology
Longking EnTech Europe: UV Disinfection for Open-Channel Applications – NLQ Series
Ultraviolet (UV) technology is a proven and chemical-free method for microbial disinfection in municipal and industrial water treatment. The NLQ open-channel UV system from Longking EnTech Europe provides a robust, energy-efficient and operator-friendly solution for wastewater and reuse applications requiring validated disinfection performance.
Designed for both vertical and horizontal open-channel configurations, the NLQ series adapts to a wide range of hydraulic conditions, retrofits and civil constraints while maintaining stable UV dose delivery.
UV Disinfection in Open-Channel Systems
Open-channel UV systems are widely used in tertiary wastewater treatment and water reuse facilities. Their main advantages include:
No chemical storage or handling
No formation of harmful disinfection by-products
Instant start/stop capabilities
High inactivation efficiency for bacteria, viruses and protozoa
Compatibility with variable flow regimes
The NLQ series has been engineered to ensure high UV transmittance performance and stable dose delivery, even under fluctuating hydraulic conditions.
Vertical vs Horizontal Open-Channel UV Systems
Longking EnTech Europe supplies both vertical and horizontal open-channel UV architectures. Each configuration offers specific advantages depending on hydraulic layout, footprint, access needs and retrofit constraints.
Vertical Open-Channel UV Modules
Vertical UV modules, NLQ - H, are installed perpendicular to the water flow and offer:
Reduced footprint and improved hydraulic distribution
Optimised UV exposure across water depth
Easier lamp replacement from the top deck
Excellent suitability for deep channels
Fewer hydraulic interferences and lower headloss
This configuration is ideal for retrofit projects where channel width is limited or where operators need improved access from walkways.
Horizontal Open-Channel UV Modules
Horizontal UV modules, NLQ - HPV, are arranged parallel to water flow. They provide:
High lamp density per channel
Very stable hydraulic conditions
Flexibility for shallow channels
Lower headspace requirements
Compatibility with wide-channel installations
This layout is commonly used in new WWTPs or in facilities where channel geometry favours large active UV surface area.
Both vertical and horizontal NLQ systems use the same LPHO high-efficiency lamp technology, ensuring consistent performance across layouts.
NLQ System Configuration and Lamp Technology
The NLQ series is powered by Low-Pressure High-Output (LPHO) lamps, offering:
High germicidal efficiency
Long lamp life
Reduced energy consumption
Stable dose delivery in variable flows
Technical Features
Modular frames for both new installations and retrofits
Quartz sleeves for high UV transmittance
Automatic or manual sleeve wiping systems
Reinforced stainless-steel structure
Top access for lamp removal (vertical systems)
Sliding frame access (horizontal systems)
Automated intensity and dose control
This modularity ensures a perfect fit for a wide range of hydraulic scenarios.
Control, Monitoring and Automation
The NLQ system integrates seamlessly with plant SCADA through standard communication protocols. Key monitoring parameters include:
UV intensity
Dose calculation
Lamp status and remaining life
Power consumption
Water level and flow data
Alarm reporting
Optional remote-access capabilities
Advanced automation ensures consistent disinfection performance even during flow peaks or transmittance drops.
Applications
The NLQ system is suitable for:
Municipal wastewater treatment
Water reuse and reclamation facilities
Industrial effluents
Irrigation water
Environmental discharge compliance
Retrofits of existing UV channels
Its ability to operate in both vertical and horizontal layouts makes it adaptable to virtually any civil configuration.
Advantages of UV Disinfection
Compared with chemical disinfectants, UV provides:
No harmful disinfection by-products
No chemical storage/transport
High efficiency against chlorine-resistant organisms
Low operational risk
Minimal maintenance
Strong environmental sustainability
These benefits align with the needs of modern WWTPs and reclaimed water facilities.
Regulatory Compliance and Sustainability
UV technology naturally complies with:
EU Regulation 2020/741
WHO water reuse guidelines
Local discharge requirements
The NLQ series helps plants achieve regulatory targets while reducing chemical consumption and operational complexity.
The Longking EnTech Europe NLQ open-channel UV system delivers reliable, efficient and sustainable disinfection performance. With both vertical and horizontal module options, advanced automation and LPHO technology, it is a robust solution for new installations, upgrades and retrofits in wastewater and water reuse applications.
UV 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 .