PAH Sensor for Marine Scrubbers Wash Water Monitoring System

Overview

Desun Uniwill is delighted to introduce its newly developed PAH Sensor to the market. The PAH Probe is a fluorimeter that accurately and continuously measures the concentration of Polycyclic Aromatic Hydrocarbons in water. These PAHs result from the incomplete combustion of petroleum and are present in most mineral oils or fuels. The sensor measures the sum of the PAHs passing in front of the lens, detecting and measuring polycyclic aromatic hydrocarbons (PAHs) from 0 to 1000 ppb (µg/L).

Desun Uniwill PAH Measurement Sensor operates on the principle of UV fluorescence, which is much more sensitive than the conventionally used infrared scattering or absorption method. This enables the determination of even the slightest traces of PAHs, for example, in drinking water and cooling water condensates. Application areas include the petrochemical industry, leakage detection in cooling and wastewater streams, as well as environmental monitoring. The Fluorescence PAH Oil Probe can be used stationary in shafts, flow, and pipelines. PAH probes connect to controllers for data display and recording. It features an RS-485 interface that allows easy and fast sensor configuration via Modbus.

• PAH Probe mode, the probe is installed in the flow-through tank.
• PAH Analyzer mode combines the instrument with a flow-through tank to lead the liquid into the glass tube for measurement.

All of the above are real-time on-line measurement.

Technical Parameter

Measuring Principle

The measuring principle is based on the fluorescent properties of PAHs. Mineral oils rich in aromatic content will fluoresce when illuminated with ultraviolet light. The intensity of this fluorescence depends on the polyaromatic hydrocarbon (PAH) content of the oil. Typical oils that fluoresce include fuel oil, crude oil, hydraulic oil, and transformer oil. Each oil has its unique fluorescence intensity resulting from its specific PAH content. PAHs are integral parts of most mineral oil products and are a very specific indicator of oil contamination in water bodies and process water.

Features of PAH Oil-in-water Sensor

• PAH Measurement Range: 0 1000 ppb (µg/L)
• Equipped with an RS-485 interface that enables simple and quick sensor configuration via Modbus
• In situ measurement, no sampling no reagents
• Installations on the inlet and outlet of the scrubber
• Fluorescence probe for PAH/Oil in water measurements
• Corrosion-free Housing
• Detects oil in water through UV fluorescence
• Real-time in-line measurement
• Simple installation and operation

Advantages of Desun Uniwill PAH Probe

• Allowing for uninterrupted monitoring
• High Sensitivity with Low Cost
• Very High Accuracy
• Compliant with current IMO regulations
• Precisely measure hydrocarbons in water around oil wells
• Continuous PAH oil-in-water monitoring for the right price
• Minimal Maintenance
• High Sensitivity and Selectivity
• High Technology at a low price
• Fast Response Time
• Optical window with coating to minimize clogging

PAH Testing Purpose

• Trace oil in water
• Leak detection
• Oil Spill Monitoring
• Water Quality Monitoring
• Hydrocarbons monitoring in water
• Oil in Water Monitoring

PAH Monitoring Medium

• Ballast Water
• Discharge Water
• Industrial Wastewater
• Drinking Water
• Washing Water
• Cooling water & condensate return
• Process water (refineries, desalination plants)
• Rainwater (airport runoff monitoring)

Application Areas of PAH Sensor

• Monitoring drinking water resources
• Biological wastewater treatment plant protection
• Control of industrial discharges and wastewater
• PAH measurement in processed water
• Protection of membranes in desalination plants
• Control of washing water from purifiers on ships
• Marine ship Scrubber wash water monitoring
• Pipeline monitoring
• Bilge water monitoring
• Outflow detection in cooling condensates
• Environmental monitoring
• Petrochemical
• Wastewater monitoring
• Fuel detection in natural waters and sewage plants
• Gas Station/Refinery
• Bottom Water Monitoring
• Smoke Scrubbing
• Desalination device
• Airport Monitoring
• Maritime EGCS (Scrubber)
• Exhaust gas cleaning systems (EGCS) wash water monitoring
• Supervision and online control of fresh water in waterworks and boreholes
• Monitoring of wastewater in industrial and municipal sewage works
• Crude oil detection, and leakage control at offshore oil pipelines
• Exhaust gas wash water monitoring