Implementation of Ballast Water treatment system using electrolysis

Abstract

Recently, an environmental issue for ballast water which helps a ship maintain a balance has been discussed.To prevent ballast water from causing marine pollution, the IMO adapted the International Convention for Control and Management of Ship's Ballast Water and Sediments. As a result, all ships must install the BWTS by 2017. There are several methods of processing ballast water. The BWTS which is discussed in this paper uses electro-chlorination and is named as HiBallast(Hyundai Intelligent Ballast). We have analyzed operations of the HiBallast and implemented control sequence of these operations in a form of function block diagram by logic configurator based on IEC61131-3.Also we have implemented the HMI which enables user to control and monitor the HiBallast. In this paper, we explain the operations and implementation of the HiBallast and the FAT(Factory Acceptance Test) for verifying performance of the BWTS.

Potentiometric Sensor Based on Carbon Paste Electrode for Monitoring Total Residual Chlorine in Electrolytically-Treated Ballast Water

“…A number of technologies and rules for BW treatment have been established so as to eliminate the possible invasion of alien marine species. Among these methods, electrolytical treatment [ 5 , 7 , 8 ] is adopted as the most effective, convenient, and promising method due to its advantages, such as low price, high efficiency, no addition of chemical reagents, and safety, as well as the long-term stability. During electrolytical treatment, chlorine generated on the anode (Equation (1)) reacts with sodium hydroxide generated on the cathode, forming sodium hypochlorite (Equation (2)).…”

LED Module Calibration Strategy to Improve Measurement Accuracy of TRO Concentration

“…A high-brightness LED and RGB sensor are used in the TRO concentration measurement system. The high-brightness LED emits white light, and the RGB sensor can measure the intensity of the light source by separating the red, blue, and green light sources [15][16][17]. In this way, if the green and blue wavelengths are used among these types of wavelengths, it is possible to measure the TRO concentration with more than double accuracy even at high concentration (over 10 mg/L) [18,19].…”