CompactClean Ballast Water Management System

Looking for a ballast water management system that can be installed easily and without relocating other equipment?

CompactClean is the answer! 

  • Approved for worldwide operation with both US Coast Guard and IMO type approval. 
  • The smallest footprint in industry
  • Only system in the world with integrated stripping solution
  • Filter and UV unit in seawater resistant Nickel-Alu-Bronze
  • Automatic flow control and lamp dimming
  • Worldwide service network
  • Fully automated operation
  • 2 hours’ holding time on USCG TA Certificate
  • IMO type approval according to the new BWMS code from IMO
  • Operational without add-ons
  • Graphic HMI touchscreen interface
  • Automatic generation of PDF reports to authorities
  • Patent pending highly efficient UV unit design
  • Short delivery time
  • Easy maintenance
  • No salinity or temperature limitations
  • Down to UV Transmission of just 42% - Also in US Territory!
  • 100% chemical free treatment

Almost as easy as plug and play! It is one of the first ballast water management systems on the market that combines very low space with large flow rates. Only 2.8 m2 / 30 sqft is necessary for a 1000 m3/h / 4403 gpm system + 0.6 m2 / 6.4 sqft for the electrical panel, which can however be placed up to 100 m / 328 ft away from the system itself.

If you have any questions, want to start a conversation or want a budget quotation, please click one of the below.

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Video: Index      
Ballast Operation: 00.27 De-Ballast Operation: 02:40 Stripping Operation: 03:19 Cleaning in Place: 03:51


The system is based purely on mechanical treatment and therefore it does not involve any use of chemicals or active substances. This eliminates risks of hazards to crew, vessel or the environment.

First treatment step is filtration, second step is UV treatment. During de-ballasting, UV treatment is repeated, but the filtration step is skipped.


New System Special Features

Smooth Port Operations
Automatic adjustment of treatment in order to cope with extremely challenging water, avoiding alarms and interrupted port operations in dirty and challenging water conditions.

High Efficiency Keeps your OPEX Down
Patent pending UV unit design with very high treatment efficiency reduces the power consumption.

Stripping Operations
The CompactClean filter backflush pump can be used as stripping pump during stripping of ballast tanks.

Fully Automated with Easy Integration into Ship Automation System
CompactClean is PLC controlled and supports all generally used main types of communication interfaces.

Long Lifetime of Components Gives you Reliable Treatment and Low OPEX
UV unit made of Nickel-Alu-Bronze material with superior corrosion resistance and proven very long lifetime.

CompactClean-340 system in standard 10” HC container

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Compact Clean Technical Data


Intelligent Control

The System is Delivered with a Standard Electrical Panel. Additional Remote HMI Screen on e.g. Bridge or in Engine Control Room can be Added.
The BWMS is delivered with a main panel that can be placed in any convenient place. The main panel is equipped with an HMI screen, from which the system is controlled and alarms are visualized. All operations can be done from a secondary screen in the deck control office or on the bridge, if option for installing remote control screens is used.
Standard fully automated operating modes for treatment are:

  • Ballast
  • De-Ballast
  • Stripping
  • Other automated modes which can be selected are:
  • Water Filling
  • Recirculation

On the HMI screen, the operator can switch between several screen views (main page, active alarms, alarm history, PI-D page and UV drivers) to display all relevant information. During operation, the status of all components and sensors can be monitored, and operational values such as flow, pressure, temperature and UV intensity can be viewed instantaneously; and trend curves can be displayed to see the development over time.


UV Transmission

What is UV Transmission?
UV-T is a measure of the capability of UV light to penetrate water. When the UV-T is high, close to 100%, the water is very clear and the UV light can penetrate deep into the water. On the other hand, when the UV-T is low, the water is very unclear and the UV light can only penetrate a limited distance into the water.

Clearly, the UV-T of the water to be treated is of utmost importance. To kill or render an organism non-viable, a certain UV dose is required, and the applied UV dose is directly proportional with the UV intensity. Therefore, when the UV-T is low, significantly more UV power is needed to treat the water according to the required discharge standards. 



UV Unit for 750 m3/h, 3302 gpm


Limitations of Ballast Water Management Systems
It should be acknowledged that all BWMS have limitations. Typically, chemical systems (e.g. electro-chlorination) have limitations related to the salinity of the water to be treated, its temperature or the amount of organic material contained in the water; whereas UV based BWMS have limitations with regard to the UV transmission of the water to be treated. In other words, all BWMS have special circumstances under which they cannot be expected to treat the water according to the IMO and USCG discharge standard. The trick for the ship owner is to select a BWMS that will work under normal operational conditions.

Port UV-T
Istanbul, Turkey 95%
San Pedro, CA, USA 95%
Vera Cruz, Mexico 94%
Halifax, NS, Canada 94%
Rotterdam, Netherlands 93%
Port of Singapore, Singapore 93%
Skagen, Denmark 92%
Brisbane, Australia 92%
Porto Grande, Cape Verde 92%
Wallhamn, Sweden 91%
Houghton, MI, USA 91%
Melbourne, Australia 87%
Erie, PA, USA 87%
Zeebrugge, Belgium 85%
Gothenburg, Sweden 85%
Charleston, SC, USA 84%
Tanjung Pelepas, Malaysia 83%
Baltimore, MD, USA 83%
Hong Kong, China 80%
Houston, TX, USA 74%
Hamburg, Germany 69%
Antwerp, Belgium 66%
Bremerhaven, Germany 60%
Shanghai, China* 55%
New Orleans, USA 54%
Lisbon, Portugal* 53%
Brunswick, GA, USA 51%
Southampton, England 51%
Shanghai, China* 49%
Lisbon, Portugal* 41%

*In the same port the UV-T can vary from day to day depending on tide, weather (rain and strong wind), and season. Source:  DHI & DESMI Ocean Guard


UV Transmission of Ballast Water
The UV-T found in different ports around the world varies significantly. Some ports are located at river estuaries, which means that the water in the port is fresh water containing high amounts of sediments, organic particles and dissolved organic compounds. This makes the UV-T very low. Other ports are located on islands in the middle of an ocean, and here the UV-T is typically high. In the same port the UV-T can vary from day to day depending on tide, weather (rain and strong wind), and season.


EX Certificate

Safety on Board any ship - including Oil and Chemical Tankers

The CompactClean BWMS is available in an ATEX and IECEX certified version, making installation in hazardous zones onboard oil, chemical or gas tankers possible. The EX certification notation is:

Ex II 2G Ex d e [ia] IIB T4 Gb and is based on the following components:

  • UV-sensor: EX [ia]
  • Temperature: EX [ia]
  • Pressure: EX [ia]
  • Water level: EX [ia]
  • Junction Box: EX e
  • Valves: Ex d
  • Motors: Ex d
  • UV lamp assembly: Ex d
  • Pumps (mechanical ATEX approval)
  • Flow meter: [ia]

DESMI guarantees a distance of up to 300 meters / 984 ft between the main panel and the Ballast Water Management System.

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