ADVANCING MARINE SEWAGE TECHNOLOGY SINCE 1972

  • HAMANN sewage treatment plants (STP)

HAMANN offers a full range of high quality sewage treatment plants (STP), also referred to as marine sanitation devices (MSD) for offshore and inland vessels. Sewage and greywater treatment equipment from HAMANN is the preferred choice by many of the world’s leading shipyards, shi operators, ship owners and ship managers. The HAMANN product range of sewage treatment equipment covers all applications in the marine industry, including yachts and superyachts, ferries and passenger vessels, cruise ships, commercial and naval vessels and offshore installations.


  • HAMANN advanced wastewater treatment systems (AWTS)

HAMANN also offers a full range of high quality advanced wastewater treatment systems (AWTS) for offshore and inland vessels. Sewage and greywater treatment equipment from HAMANN is the preferred choice by many of the world’s leading shipyards, ship operators, ship owners and ship managers. The HAMANN product range of advanced wastewater treatment equipment is specifically designed to meet the highest standards in sewage and greywater treatment. These systems suit the needs of cruise ships, ferries and passenger vessels and large superyachts operating in the waters of of Alaska and in the Baltic Sea, being a special area under MARPOL Annex IV.


  • HAMANN grease separators

Grease separators are crucial for the performance of sewage systems. Fats, oils and grease, in short: F.O.G., have a negative impact on the performance of the sewage system. Pipelines and sensors are blocked or sealed by grease deposits within a short time. In holding tanks, grease accelerates the formation of hydrogen sulphide, a toxic and highly odorous gas. Hydrogen sulphide can lead to the formation of sulphuric acid, which then attacks the substance in the pipes. In addition, the purification performance of the sewage treatment plant is severely impaired.  Fats, oils and grease mainly get into the sewage via food residues in the galley water. Therefore, all drainage from kitchen areas, i.e. from sinks and dishwashers, or residual water from food waste treatment systems should pass through a grease separator. Only after this treatment, it may be considered as greywater and discharged into a holding tank. Food waste itself must always be treated separately from sewage, as it falls under MARPOL Annex V.


  • HAMANN conditioning systems

Aeration and circulation are two important aspects of sewage systems onbard ships. The contents, the ratio between black water and greywater and the condition of the sewage mix that is fed into a sewage treatment plant have a major impact on the treatment performance. The influent sewage mix for the sewage treatment plant should be well circulated to avoid clogging and to ensure a good balance of suspended an dissolved solids. The influent sewage mix should also be well supplied with oxygen and thus in aerobic condition. HAMANN conditioning systems help the crew on board to meet these criteria in the daily operation.


  • HAMANN transfer management systems

Sewage transfer management and sewage storage are important tasks of the sewage system on board any vessel. The more separate tanks are used on board and the longer the journey times between ports, the more important it becomes to have an intelligent transfer management system on board that can perform these tasks.


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