The SMART ESM is a washwater monitor for wet scrubber systems measuring and recording PAH, Turbidity, Temperature and pH.
Overwiew
In January 2020, the IMO 2020 global sulphur cap came into force to improve air quality, preserve the environment and protect human health. To comply with this sulphur reduction a popular solution is to install an exhaust gas cleaning system (EGCS).
For this, wet scrubber systems use wash water to remove the pollutants from the exhaust gas. Therefore the wash water being discharged must be monitored at all times to ensure it is within the limits set by the regulating body. There are IMO regulations for water quality parameters including Polycyclic Aromatic Hydrocarbons (PAHs), pH and turbidity prior to discharge into the ocean.
With over 35 years experience designing equipment for the marine environments, Rivertrace has developed our SMART ESM. The SMART ESM designed to MEPC.259(68) and MEPC.340(77) and is suitable for both the inlet and outlet of a EGCS, measuring and recording the required parameters of PAH, Turbidity, Temperature and pH. The monitor can be installed on new build of retrofit systems and can accommodate open-loop, closed-loop and hybrid scrubber systems.
The innovative measuring cell design allows for unique Plug and play maintenance design. Each measurement parameter is enclosed in a separate cassette slotted inside the measuring cell around the sample tube. This allows the calibrated parts to be swapped without the need of isolating the sample which flows through a glass tube in the centre of the cell.
Applications
- Exhaust Scrubber Washwater Discharge
- MEPC 259(68)
Technical Specifications
| PAH Range | 0μg/L to 4500μg/L |
| PAH Accuracy | 5% of measurement reading |
| PaH Measurement Principle | UV Fluorescence |
| Turbidity Range | 0 – 500 NTU |
| Turbidity Accuracy | 0.1NTU up to 100 NTU, 1NTU thereafter. |
| Turbidity Measurement Principle | IR Scattering |
| pH Range | 0 – 14 pH |
| pH Accuracy | 0.1 pH |
| pH Measurement Principle | pH Electrode |
| Sample / Clean Water Temperature range |
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| Sample / Clean Water pressure range | 1 to 9 Bar |
| Optimum Measuring pressure (Sample / Clean) | 3 Bar |
| Required Air Supply Pressure Range | 4 – 6 Bar |
| Compressed Air normal / average consumption | 450mL / Hr |
| Sample / Clean Water Flow rate range | 1 to 4 LPM |
| Ambient Temperature range | 0°C to 50°C |
| Supply Voltage | 230 VAC 50/60 Hz |
| Outputs |
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| Response Time | 266 seconds at 1l/m flow rate |
| Storage |
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| IP Rating | IP66 |
| Wetted Parts Material | uPVC, Nylon, Black acetal copolymer and peek |
| Approvals | DNV Type Approval – MEPC.259(68) and MEPC.340(77) |