Ultrafiltration Solutions for EGR
BOLLFILTER offers customized filtration solutions for Exhaust Gas Recirculation (EGR) that effectively remove sulfur and particles from bleed-off water, safeguarding diesel marine engines. The BOLLFILTER FineFilterUnit, based on its advanced ultrafiltration ceramic membrane technology, is a fully automated system that cleans bleed-off water, collecting suspended particles as concentrated sludge or solid components. This solution provides reliable and efficient EGR treatment, ensuring optimal IMO discharge compliance.
Membrane filtration in compliance with regulation for bleed-off water – IMO MEPC.307(73)
The BOLL FineFilterUnit complies with the regulatory guidelines for the treatment of EGR wastewater - IMO MEPC 307 (73) for MAN and WinDG engines. The membrane system ensures that the oil content in treated water is consistently below 5 ppm, meeting all necessary current requirements. Trust in our proven track record of successful tests directly at customer sites and more than 150 FineFilterUnits sold.
Our membrane system is also suited for Exhaust Gas Cleaning Systems (EGCS) according to the IMO MEPC.259 (68).
Advantages of the BOLL FineFilterUnit in EGR application
Advantages for engine manufacturers:
Marine engine builders integrating the BOLL FineFilterUnit (FFU) into the EGR system can benefit from the following:
Advantages for Shipowners:
MAN engines
Removal Rate:
>97% Turbidity [NTU]
>99% TSS [mg/L]
98% Oil [mg/L]
WinGD engines
Removal Rate:
>99% Turbidity [NTU]
>99% TSS [mg/L]
86% Oil [mg/L]
Filtration technology comparison
Characteristics of different filtration technologies
Dissolved Air Flotation | Centrifugal Separator | BOLL Membrane Filtration | |
---|---|---|---|
Polishing steps required | 2, Chemical and physical | 2, Chemical and physical | None (membrane as physical barrier) |
Separation dependence from density, temperature and water composition | Yes | Yes | No |
Replacement of filter elements | Regularly | Regularly | Not regularly |
Chemicals required for separation | Required, to increase the particle sizes for efficient floating | Required, to increase the particle sizes for centrifugal separation | Not required, Filtration based on size exclusion within the nanometer range |
Separation dependance from chemical or physical parameters | Impacted by water composition and dosing settings | Impacted by water composition and dosing settings | No dependance, 100% hard barrier, no particles with sizes greater than Cut-Off can pass |
Separation above 23° roll angle | Not possible | Possible | Possible |
Exhibitions
Application Technology for Efficiency & Sustainability – under this slogan, the filtration experts from BOLL & KIRCH will be presenting advanced and customer-focused solutions for the application area „Maritime Water Filtration” and “Marine Engines” at the worldwide largest marine exhibition.