Our HAMANN HL-CONT Plus OceanCruise advanced wastewater treatment systems are designed to meet the highest standards for sewage & greywater discharge. They are compliant with IMO regulation MEPC.227(64) 4.2 (Baltic Sea as MARPOL Annex IV special area) & US regulation 33 CFR 159 Subpart E (Alaska). They have no need for filters and membranes. Their modular design consists of 2 Dissolved Air Flotation units & 2 Moving Bed Biofilm Reactors. Each module can be installed apart from the others.