Nuvonic Wastewater UV Disinfection (ProLine PQ WW, WW IL, OpenLine OLS)

Wastewater UV disinfection treats treated wastewater with UV-C light instead of chemicals. Nuvonic ProLine PQ WW (NWRI validated), ProLine WW IL and OpenLine OLS open channel systems are designed for final disinfection before discharge and for reuse lines. Mikron Proses (Üsküdar, Istanbul) offers them with model selection, supply and commissioning.

UV is a proven alternative to chlorination and avoids generating potentially harmful by-products, so no chemicals are added to the water. Two inputs drive the choice in wastewater: the UV transmittance of the water (UVT) and the disinfection target.

Dose: how the target is set

UV dose is the result of light intensity and the time the water spends under the lamps. In Nuvonic systems a UV sensor measures intensity continuously. When flow and UVT meters are connected, the dose delivered by the reactor is calculated from the actual process conditions and a low-dose warning is raised. The target dose depends on the sensitivity of the target organism and on the microbiological criterion of the discharge permit or reuse standard, which is set per plant and per receiving environment. This page does not state dose figures; they are defined per project. For organism sensitivity, see the UV system selection guide.

The dose a reactor delivers in the field is not the value calculated from lamp power alone; flow dynamics and water quality decide it. For critical lines, a reactor with independently validated dose equations is therefore preferred. For the ProLine PQ WW series, dose equations and sizing are independently derived and third-party validated to the NWRI standard for wastewater reuse.

UVT: why it decides the selection

UVT is the percentage of UV light that passes through the water. Suspended solids, turbidity and UV-absorbing organic matter lower it, and the same lamp then delivers less dose. In wastewater UVT is generally lower than in drinking or process water and changes over time, which has these consequences:

• The UV reactor goes after the clarifier, sand filter or membrane, because pre-treatment raises UVT.
• Sizing is done for the worst-case UVT; UVT is the datum that is most often missing.
• With flow and UVT meters connected, lamp power is adjusted steplessly and energy follows the actual conditions.
• ProLine WW IL is designed for low UVT water; the PQ WW series is preferred for reuse lines.

Discharge or reuse?

Application	Series	Note
Reuse: irrigation, aquifer recharge, process water	ProLine PQ WW AL and PQ WW IL	NWRI validated; tertiary disinfection after sand filter or membrane
Discharge, lower criticality, low UVT	ProLine WW IL	Basic model without third-party validation; after clarifier, sand filter or membrane
Disinfection in an open channel before discharge	OpenLine OLS	Modular lamp banks, automatic wiper, RS 485 for SCADA

Series values (datasheets)

Series	Lamp	Maximum power	Lamp life	Liquid temperature	Pressure
ProLine PQ WW AL	Low pressure amalgam	2.4 and 7.2 kW (AL 100 / AL 300)	9,000 hours	5-40°C	10 bar
ProLine PQ WW IL	Medium pressure	5.6-117 kW (9 models)	12,000 hours	1-60°C	6 bar
ProLine WW IL	Medium pressure	1.8-117 kW	12,000 hours	1-60°C	6 bar
OpenLine OLS	Low pressure, high-output amalgam	Depends on the number of modules and banks	14,000 hours	Open channel	Open channel

The values are the manufacturer’s statements in the datasheets; details vary with model and configuration. The datasheets of the ProLine series give lamp power, not flow capacity; for OpenLine OLS the datasheet gives hydraulic limits from 84 m³/h per model.

Operation: wiper, monitoring and maintenance

• Automatic wiper: keeping the quartz sleeve clean matters for dose in wastewater; all series have an automatic wiper, and Ultrawipe is optional on PQ WW IL and WW IL for water with high fouling potential.
• Dose and alarms: 4-20 mA outputs carry UV dose and ballast power, and VFC outputs carry system status and faults; the ProLine series connects to SCADA over Modbus RS 485.
• Maintenance: for lamp and quartz sleeve replacement, see UV lamp replacement.

Information needed for selection

1. Minimum, nominal and maximum flow (m³/h) and the hydraulic type: open channel or closed pipe
2. UVT (T10, %) and its worst-case value
3. The microbiological criterion of the discharge permit or reuse standard, and the validation required
4. The treatment chain before the UV unit (clarifier, sand filter, membrane) and the turbidity
5. Supply voltage, SCADA protocol and available installation space

If you share this information, we can select the series and lamp configuration together. For general UV selection, see the UV system selection guide, for all series UV disinfection systems, and for the manufacturer Nuvonic.