By disinfecting the ballast water in ships, a system named Sicure protects marine environments from damage due to the introduction of alien plant and animal species.
In addition, Sicure can also process cooling water. This combination of features is unique worldwide. Siemens has now received full certification for Sicure from the International Maritime Organization (IMO). A new IMO guideline will require that all ocean-going ships be equipped with certified disinfecting equipment for sterilizing their ballast water. This regulation will mean that over 50,000 ships worldwide will have to be retrofitted in the near future.
Ships that aren't carrying a load are stabilized by taking on ballast water directly from the sea. However, when discharging that water again, ships can introduce organisms into foreign ecosystems. For example, it was ballast water that introduced the European zebra mussel into the Great Lakes of North America where they have caused extensive damage to water pipes and drainage systems. Another example of the phenomenon is provided by the mitten crab, a species from northern Asia, which was brought to North America and Europe where it has caused the extinction of a number of local species.
In order to limit natural and economic damage, the IMO now requires ships to be equipped with a certified ballast water processing system that conforms to specified standards. Actually, these systems aren't in use 95 percent of the time, because the process of taking on or releasing ballast water doesn't last very long.
In contrast, because of its ability to process both ballast water and cooling water, the new Sicure system can be in operation continuously, making a separate system for the cooling water unnecessary. The IMO has confirmed Sicure's positive environmental credentials as well as its compliance with safety standards. Sicure is a further development of the Chloropac system, which has successfully been processing seawater in cooling circulation systems for 35 years.
The process of electrolysis produces hypochlorite, a disinfectant, from the salt contained in seawater. The system is a combination of a filtering phase followed by an electrolysis phase, where the introduction of the hypochlorite is precisely regulated. Additionally, by injecting a small amount of hypochlorite solution into the water before it enters the ballast water filter, the Sicure system reduces the risk of fouling through biological contaminants.
This added step, which reduces system failures and maintenance, has been registered as a patent by Siemens.
Dr. Norbert Aschenbrenner | Siemens InnovationNews
Dispersal of Fish Eggs by Water Birds – Just a Myth?
19.02.2018 | Universität Basel
Removing fossil fuel subsidies will not reduce CO2 emissions as much as hoped
08.02.2018 | International Institute for Applied Systems Analysis (IIASA)
At the Hannover Messe 2018, the Bundesanstalt für Materialforschung und-prüfung (BAM) will show how, in the future, astronauts could produce their own tools or spare parts in zero gravity using 3D printing. This will reduce, weight and transport costs for space missions. Visitors can experience the innovative additive manufacturing process live at the fair.
Powder-based additive manufacturing in zero gravity is the name of the project in which a component is produced by applying metallic powder layers and then...
Physicists at the Laboratory for Attosecond Physics, which is jointly run by Ludwig-Maximilians-Universität and the Max Planck Institute of Quantum Optics, have developed a high-power laser system that generates ultrashort pulses of light covering a large share of the mid-infrared spectrum. The researchers envisage a wide range of applications for the technology – in the early diagnosis of cancer, for instance.
Molecules are the building blocks of life. Like all other organisms, we are made of them. They control our biorhythm, and they can also reflect our state of...
University of Connecticut researchers have created a biodegradable composite made of silk fibers that can be used to repair broken load-bearing bones without the complications sometimes presented by other materials.
Repairing major load-bearing bones such as those in the leg can be a long and uncomfortable process.
Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.
Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...
Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.
The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...
13.04.2018 | Event News
12.04.2018 | Event News
09.04.2018 | Event News
24.04.2018 | Information Technology
24.04.2018 | Earth Sciences
24.04.2018 | Life Sciences