·OH Treatment for Killing of Harmful Organisms in Ship’s Ballast Water with Medium Salinity Based on Strong Ionization Discharge

2013 ◽  
Vol 33 (4) ◽  
pp. 751-763 ◽  
Author(s):  
Yubo Zhang ◽  
Mindong Bai ◽  
Cao Chen ◽  
Xiangying Meng ◽  
Yiping Tian ◽  
...  
Keyword(s):  
Ballast Water ◽  
Harmful Organisms ◽  
Strong Ionization Discharge ◽  
Ship’S Ballast Water

Treatment of 20t/h Ship's Ballast Water Using Strong Ionization Discharge

2004 ◽  
pp. 220-225
Author(s):  
Mindong Bai ◽  
Zhitao Zhang ◽  
Xiaohong Xue ◽  
Xingwang Liu ◽  
Xiyao Bai
Keyword(s):  
Ballast Water ◽  
Strong Ionization Discharge ◽  
Ship’S Ballast Water

Studies of the Effect of Hydroxyl Radicals on Photosynthesis Pigments of Phytoplankton in Ship's Ballast Water

2004 ◽  
Vol 7 (2) ◽  
Author(s):  
Zhitao Zhang ◽  
Mindong Bai ◽  
Xiyao Bai ◽  
Bo Yang ◽  
Mindi Bai ◽  
...  
Keyword(s):  
Hydroxyl Radical ◽  
Hydroxyl Radicals ◽  
Ballast Water ◽  
Experimental System ◽  
Marine Species ◽  
Pilot Scale ◽  
Invasive Marine Species ◽  
Ship’S Ballast Water

AbstractA pilot-scale system of 20 t/h for the treatment of ship’s ballast water and the setup of dissolved hydroxyl radical was introduced in this paper. With this experimental system, the kill efficiencies of bacteria, mono-algae, protozoan reach 100% within 2.67 s when dissolved OH· concentration is 0.6 mg/L. At the same time, the effect of hydroxyl radicals on the photosynthesis pigments of phytoplankton was done. The results indicate that the contents of chlorophyl-a, chlorophyl-b, chlorophyl-c and carotenoid are decreased to 35 ~ 64% within 8.0 s further to the lowest limit of test after 5 min. When dissolved OH· ratio concentration is 0.68 mg/L, the attenuation efficiencies of photosynthesis pigment are 100%. Therefore the invasive marine species can be killed in the process of the inputting and discharge ship’s ballast water.

scholarly journals Analysis of Ballast Water Treatment Technologies on Ships Operating in the Baltic Sea Region

2020 ◽  
Vol 8 (1) ◽  
pp. 15-20
Author(s):  
Renāte Kalniņa ◽  
Alise Romule
Keyword(s):  
Baltic Sea ◽  
Ballast Water ◽  
Aquatic Organisms ◽  
Water Control ◽  
The Baltic Sea ◽  
Baltic Sea Region ◽  
Treatment Technologies ◽  
Control Technologies ◽  
The Baltic ◽  
Ship’S Ballast Water

AbstractThe introduction of invasive aquatic species in new environments has been identified as one of the four biggest threats to the world's oceans causing serious threats and harm to both ecology and human health. There is a major exchange of ship’s ballast water over longer distances between continents and regional seas, and it has been known for decades that ballast water transfers organisms to new ecosystems, where the strongest, most aggressive and adaptable species can survive and become invasive under favourable conditions. The focus of the research is to study available ballast water control technologies to determine their suitability and effectiveness in the reduction of harmful aquatic organisms and compounds in the Baltic Sea.

scholarly journals IMPACT OF SHIP'S BALLAST WATER ON INVASIVE SPECIES OCCURRENCE, AND AS A CONSEQUENCE ON ENVIRONMENTAL AND PUBLIC HEALTH: A SHORT REVIEW

2020 ◽  
Vol 36 (1) ◽  
pp. 18-21
Author(s):  
A. Kholdebarin ◽  
N. Mozaffari ◽  
V. Vambol ◽  
S. Vambol ◽  
N. Mozaffari
Keyword(s):  
Public Health ◽  
Invasive Species ◽  
Ballast Water ◽  
Water Pressure ◽  
Ecological Impacts ◽  
Nutrient Cycle ◽  
Species Occurrence ◽  
Study Results ◽  
The Impact ◽  
Ship’S Ballast Water

Water is one of the main ways of transportation. The reduction of water pressure on the ship hull, controlling ship submergence, compensate for the impact of losing weight from fuel or water consumption, help to the existence of lateral balance and stability are the factors that show all ships need ballasting. Ballast water contains a large number of organisms from different species, which are in different life stages (egg, Larvae, Cysts, Spores, or adult). These aquatic invasive species cause damage to fisheries, aquaculture, water supply system, industrial infrastructure, biodiversity, and habitat. The study aims to review open information sources and analyze them to identify the Impact of ship's ballast water on invasive species occurrence, and as a consequence on environmental and public health effects. The search for sources was carried out for the keywords «ballast water», «ecology», «environment», «public health» and «invasive species», as well as for various combinations of these words through the Google Scholar. Restrictions in the search for sources amounted to: since 2005 and in relevance. The features of one of the reasons for the spread of invasive species and negative environmental consequences for aqua systems and public health are studied. The study's practical value lies in the fact that the study results can be used to train workers from water transport and ensure the environmental safety of aqua systems. Predation, parasitism, competition, the introduction of new pathogens, genetic changes, habitat alterations, species shift, and loss of biodiversity are the most important ecological impacts. Exotic species, which are often brought with ballast water, cause change to ecosystem function by changing in a nutrient cycle and a decrease in water quality. It is established that some invasive species including Vibrio Cholera and Giardia duodenalis that are transported by ballast water also affect the public health by increasing the risk of pathogens and parasitism.

scholarly journals Sampling Methodologies and Approaches for Ballast Water Management Compliance Monitoring

2012 ◽  
Vol 23 (5) ◽  
pp. 397-405 ◽  
Author(s):  
Stephan Gollasch ◽  
Matej David
Keyword(s):  
Water Management ◽  
Ballast Water ◽  
Compliance Monitoring ◽  
Water Sampling ◽  
State Control ◽  
International Convention ◽  
Harmful Organisms ◽  
Control Port ◽  
Ballast Water Management ◽  
Port State Control

The human-mediated transfer of harmful organisms via shipping, especially via ballast water transport, has raised considerable attention especially in the last decade due to the negative associated impacts. Ballast water sampling is important to assess the compliance with ballast water management requirements (i.e. compliance monitoring). The complexity of ballast water sampling is a result of organism diversity and behaviour which may require different sampling strategies, as well as ship design implications including availability of ballast water sampling points. This paper discusses the ballast water sampling methodologies with emphasis on compliance monitoring by the Port State Control officers according to the International Convention on the Management of Ships’ Ballast Water and Sediments, 2004. KEY WORDS: maritime transport, compliance control, port state control, ballast water sampling, ballast water management

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