IMO has adopted RESOLUTION MEPC 227(64) with revised guidelines for effluent standards and performance test procedures for sewage treatment plants.
This new resolution is applicable to all sewage treatment plants installed on existing ships on or after 1 January 2016 and on new ships whose keels are laid on or after this date. Vessels of 400 GRT and above and ships of less than 400 GRT which are certified to carry more than 15 persons are required to comply with effect from that date.
The ACO Maripur NF and Clarimar MF range of wastewater and sewage treatment plants are fully certified to the IMO MEPC 227(64) including the section 4.2 standards.