On offshore production platforms, these are typically found after the final oil/water separation phase and prior to the produced water discharge.
Low-cost light scatter technologies and high-accuracy fluorescence technologies make up the Arjay online and benchtop monitors for mg/l (ppm) oil in water analysing to ensure a model is available to fit any application.
For online, the HydroSense 2410 is the model of choice. This unit continuously monitors the water sample flowing through it to selectively target petroleum hydrocarbons in the water. Its non-contacting sample flow-through design tolerates turbidity while providing a high degree of accuracy.
For benchtop, the FluoroCheck allows screening of field samples prior to using the ISO/EPA solvent extraction approach, which correlates well with lab and regulatory methods.