Ballast water refers to the seawater that is poured into the cabin to maintain the balance of the hull when the ship is not carrying cargo. Ballast water is released when the ship enters the port for loading. The problem is that these infused seawaters may contain local marine life, and if they are brought to different waters, they pose a threat to the ecological environment of other areas.
According to Singapore’s Lianhe Zaobao, Liang Shangyong, deputy director of the Institute of Ocean and Resource Regeneration, said that the new system uses a two-stage purification process of filtration and ferrate, with an average selling price of S$500,000 per system ( About $317,000). The Environmental Science and Engineering Research Institute has completed fixed-point experiments in laboratories and ports, and has been testing on the Singapore merchant ship “Haihuang Pearl†that has traveled between Asia, the Americas and Europe since May last year. The results show that the system has a high success rate in purifying ballast water.
Singapore is surrounded by the sea and is very busy as a transit terminal. Many ships enter the port every day. Recognizing the seriousness of the ballast water problem, Singapore developed a ballast water treatment system as early as the 1990s, and the new system developed this time is more practical and effective.
The International Maritime Organization (IMO) stipulated in 2004 that all new medium-sized ships must install ballast water treatment systems by 2009, and large ships must be installed by 2012 at the latest. Although such a system is expensive, shipping companies cannot enter the ports of members of the International Maritime Organization if they do not comply with the regulations.
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