Open channel ultraviolet C wastewater disinfection system

Open Channel UV‑C Wastewater Disinfection System

Open‑Channel Low‑Pressure Mercury Lamp Technology, Specifically Designed for Large Wastewater Channels

The open channel UV‑C wastewater disinfection system is suitable for open wastewater drainage channels. It adopts low‑pressure, high‑intensity mercury lamps with a modular rack structure, combined with non‑powered water level control and automatic mechanical cleaning, achieving large flow, low head loss, and continuous, stable UV disinfection.

System Structure & Working Principle

Open‑Channel Low‑Pressure Mercury Lamp System

Lamps are installed directly on modular racks, which are submerged in the water flow of the open channel.
Low‑pressure mercury lamps, single wavelength (254 nm), high efficiency, low power consumption.
Single lamp power: 155 W – 320 W, effective UV output ≥40%.
Rated lamp life: >12,000 hours, maximum >16,000 hours.

Modular Rack Design
Racks can be independently hoisted for easy maintenance and replacement.
Lamps and ballasts are separated (ballasts are located in independent cabinets); lamp replacement does not require hoisting the rack.
Protection rating: IP68 (lamps are multiply sealed inside quartz sleeves).

Automatic Mechanical Cleaning System

In open channel environments, wastewater tends to foul the sleeve surface, affecting UV transmittance. Fusshia Technology uses a compressed‑air‑driven cleaning system:

Drive method: Compressed air (no electrical risk, more reliable and environmentally friendly).

Cleaning ring material: UV‑resistant EPDM (ethylene propylene diene monomer) rubber.

Contact method: Soft contact to avoid lamp breakage from rigid friction.

Cleaning modes:

Automatic physical cleaning (programmable interval)

Periodic manual chemical cleaning (restores sleeve fouling factor)

Advantages: No interruption of the disinfection process, reduced manual maintenance.

Control System & Operation Management

Automatic Control Center

FST series control system, three‑phase balanced design.

Human‑Machine Interface (HMI): real‑time monitoring of flow rate, water level, UV intensity, lamp operating hours, etc.

PLC compatibility: Siemens, Schneider, Allen‑Bradley (optional).

Communication methods: multiple options, compatible with upper‑level systems.

Ballast Configuration

Power factor: 0.98, adjustable output power from 50% to 100%.

CE certified and UL certified.

Independent cabinet with air cooling, separated from the racks to extend service life.