Continuous bubble reactor using carbon dioxide and its mixtures for ballast water treatment

Baek, Jun Tae; Hong, Jae Hoon; Tayyab, Muhammad; Kim, Doo Wook; Jeon, Pil Rip; Lee, Chang Ha

doi:10.1016/j.watres.2019.02.014

Cited by 8 publications

(4 citation statements)

References 30 publications

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“…Furthermore, invasive species can cause harm to infrastructure and property, resulting in increased maintenance costs and decreased property values. The expenses associated with controlling and eradicating invasive species can be substantial, and their effects may persist for many years [6], [7], [19], [13], [23]- [29].…”

Section: Introductionmentioning

confidence: 99%

“…To ensure effective bactericidal results, precise control over the UV reactor is necessary, which involves maintaining a consistent UV lamp dose that adheres to the specified standard. In practice, the dose of UV radiation relies on two critical factors: the flow rate of water passing through the reactor, and the intensity of UV radiation within the UV reactor itself [29], [36], [37], [39], [40]. Identifying these factors and devising a control method for the UV reactor is a crucial area of research that requires careful study and implementation.…”

Section: Introductionmentioning

confidence: 99%

“…As a result, the UV dose becomes unstable, leading to inefficient energy consumption and a shorter lifespan for the UV lamps. This article focuses on formulating and establishing optimal control equations for the UV reactor, with the aim of addressing the aforementioned drawbacks and improve the performance of systems such as these [37], [38], [29], [41]- [43].…”

Section: Introductionmentioning

confidence: 99%

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Optimal UV Quantity for a Ballast Water Treatment System for Compliance with Imo Standards

Thach,

Hung

2023

Polish Maritime Research

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Ballast water management is an effective measure to ensure that organisms, bacteria and viruses do not migrate with the ballast water to other areas. In 2004, the International Maritime Organization adopted the International Convention on the Control and Management of Ballast Water and Ship Sediments, which regulates issues related to ballast water management. Many technologies have been researched and developed, and of these, the use of UV rays in combination with filter membranes has been shown to have many advantages and to meet the requirements of the Convention. However, the use of UV furnaces in ballast water treatment systems requires a very large capacity, involving the use of many high-power UV lamps. This not only consumes large amounts of electrical energy, but is also expensive. It is therefore necessary to find an optimal algorithm to enable the UV radiation for the UV controller in the ballast water sterilisation process to be controlled in a reasonable and effective manner. This controller helps to prolong the life of the UV lamp, reduce power consumption and ensure effective sterilisation. This paper presents a UV control algorithm and a controller for a UV furnace for a ballast water treatment system installed on a ship. The results of tests on vessels illustrate the effect of the proposed UV controller.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Optimal UV Quantity for a Ballast Water Treatment System for Compliance with Imo Standards

Thach,

Hung

2023

Polish Maritime Research

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“…If the huge number of organisms in the ballast water directly discharged into the destination sea without inactivated, it will inevitably cause the invasion of alien species and spell disastrous consequences for the ecological environment [ 3 , 4 , 5 , 6 , 7 ]. Therefore, ship ballast water must be inactivated before being discharged [ 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Detection of Viability and Concentration of Microalgae Cells Based on Chlorophyll Fluorescence and Bright Field Dual Imaging

Wang

et al. 2021

Micromachines

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Ship ballast water contains high concentration of plankton, bacteria, and other microorganisms. If the huge amount of ballast water is discharged without being inactivated, it will definitely spell disaster to the marine environment. Microalgae is the most common species exiting in ballast water, so the detection of the concentration and viability of microalgae is a very important issue. The traditional methods of detecting microalgae in ballast water were costly and need the help of bulky equipment. Herein, a novel method based on microalgae cell intracellular chlorophyll fluorescence (CF) imaging combines with cell bright field (BF) microscopy was proposed. The geometric features of microalgae cells were obtained by BF image, and the cell viability was obtained by CF image. The two images were fused through the classic image registration algorithm to achieve simultaneous detection of the viability and concentration of microalgae cells. Furthermore, a low-cost, miniaturized CF/BF microscopy imaging prototype system based on the above principles was designed. In order to verify the effectiveness of the proposed method, four typical microalgae in ballast water (Platymonas, Pyramimonas sp., Chrysophyta, and Prorocentrum lima) were selected as the samples. The experimental results show that the self-developed prototype can quickly and accurately determine the concentration and the viability of microalgae cells in ship ballast water based on the dual images of BF and CF, and the detection accuracy is equivalent to that of commercial microscope. It was the first time to simultaneously detect the viability and concentration of microalgae cells in ship ballast water using the method that combining the fluorescence and bright field images; moreover, a miniaturized microscopic imaging prototype was developed. Those findings expected to contribute to the microalgae detection and ship ballast water management.

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Introduction: Update of the Global Maritime Transport and Ballast Water Management Book First Edition

Gollasch,

David

2024

Invading Nature - Springer Series in Invasion Ecology

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Continuous bubble reactor using carbon dioxide and its mixtures for ballast water treatment

Cited by 8 publications

References 30 publications

Optimal UV Quantity for a Ballast Water Treatment System for Compliance with Imo Standards

Optimal UV Quantity for a Ballast Water Treatment System for Compliance with Imo Standards

Simultaneous Detection of Viability and Concentration of Microalgae Cells Based on Chlorophyll Fluorescence and Bright Field Dual Imaging

Introduction: Update of the Global Maritime Transport and Ballast Water Management Book First Edition

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