scholarly journals Effectiveness of a Barge-Based Ballast Water Treatment System for Multi-Terminal Ports

2015 ◽  
Vol 27 (5) ◽  
pp. 429-437
Author(s):  
Lovro Maglić ◽  
Damir Zec ◽  
Vlado Frančić
Keyword(s):  
Water Management ◽  
Water Treatment ◽  
Ballast Water ◽  
Discrete Event ◽  
Cost Effective ◽  
Simulation Software ◽  
Treatment System ◽  
Water Treatment System ◽  
Ballast Water Treatment ◽  
Ballast Water Management

The paper presents outcomes of the discrete event simulation of the ballast water management in a multi-terminal port. The simulation includes ship’s manoeuvring, cargo and ballast operations and a barge-based ballast water treatment system operating within all terminal areas. The barge-based ballast water treatment system is used by ships unable to use their own equipment, not equipped with an appropriate ballast treatment system or non-compliant with the Ballast Water Management (BWM) Convention 2004 for whatever reason. The main goal is to estimate the productivity and cost effectiveness of such systems as an option to support ships not able to comply with the BWM Convention, once it enters into force. The model was built and tested in Arena simulation software. Process parameters are based on real traffic data for the port of Rijeka. The results indicate that barge-based ballast treatment facility will be heavily underutilized, and that such systems are cost-effective only in ports where large volumes of ballast water need to be delivered to shore treatment systems.

scholarly journals ATP assay for rapid onboard testing to detect living microorganisms in Ballast Water

2017 ◽  
Author(s):  
Seungshic Yum ◽  
Bong Gil Hyun ◽  
Kitae Rhie ◽  
Kyoungsoon Shin
Keyword(s):  
Water Management ◽  
Water Treatment ◽  
Cell Volume ◽  
Ballast Water ◽  
Treatment System ◽  
Diatom Species ◽  
Water Treatment System ◽  
Atp Assay ◽  
Ballast Water Treatment ◽  
Ballast Water Management

Rapid and simple analytical methods for viable microorganism detection in ballast water are required to evaluate the efficiency of ballast water treatment system. During the course of systematic investigation of the cytotoxicity and apoptosis assays, it was found that the adenosine triphosphate (ATP) and luminescence based cell viability assay, in other word, an ATP assay was the most sensitive and applicable to ballast water management (BWM). The assay was applied to cultured microalgae samples, and it could detect the existence of 5 viable cells in 100 μl. Comparably low luminescent values were detected in two cultured diatom species than in cultured dinoflagellates. This result might be caused by the small cell volume in diatom species. Following a regression model between ATP concentration and cell volume, an ATP guideline (876 – 109246 relative luminescence units: RLU) was developed for the evaluation of treated ballast water. ATP assay was also applied to the evaluation of ballast water treatment system (BWTS). The luminescence value which obtained from the ATP assay also showed a good correlation with the presence of living natural plankton cells with comparably low luminescence values than the cultured species. The low ATP concentration in natural plankton cells may reflect a decline in their biological activity because of extended exposure to dark conditions. ATP assay could be a suitable method for the monitoring of ballast water management compliance even though the results of this study need further validation.

The Experimental Study on the UV Ballast Water Treatment System

2014 ◽  
Vol 1010-1012 ◽  
pp. 704-707 ◽  
Author(s):  
Jing Ming Dong ◽  
Shao Long Yang ◽  
Jin Yang Sun ◽  
Xin Xiang Pan
Keyword(s):  
Escherichia Coli ◽  
Experimental Study ◽  
Water Treatment ◽  
Ballast Water ◽  
Treatment System ◽  
Test Results ◽  
Water Treatment System ◽  
Ballast Water Treatment ◽  
Test Organisms ◽  
Circulation Volume

A UV ballast water treatment system was built in this paper. Nitzschiaclosteriumminutissima, Dunaliellasalina and Escherichia coli were selected as the test organisms to run the tests. The test results show that the inactivation ratio for the Escherichia colican close to 100%, when using 5UV lamps and the circulation volume was 5m3/h. While the inactivation ratio for the Nitzschiaclosteriumminutissima and Dunaliellasalina were 86.67% and 82.10%respectively. The investigation provides a better understanding of the UV ballast water treatment further.

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