Technical feasibility study of an onshore ballast water treatment system |
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Authors: | Shengjie Liu Manxia Zhang Xiang Li Xiaojia Tang Lingling Zhang Yimin Zhu Chengyu Yuan |
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Institution: | 1. Institute of Environmental Remediation, Dalian Maritime University, Dalian 116026, China; 2. Liaoning Ocean and Fisheries Science Research Institution, Dalian 116026, China |
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Abstract: | To fulfill the requirements of Guidelines for approval of ballast water management system (G8), a set of onshore ballast water treatment equipment utilizing micro-pore ceramic filtration (MPCF) and UV radiation (MPCF&UV) system was designed and set up with a maximum flow rate of 80 m3·h-1. Technical feasibilities of MPCF&UV system were evaluated in three areas: removal efficiencies of indicator organism and oceanic bacteria, perdurability of a ceramic filter, and application on native seawater. The results showed that no indicator organism (Dunaliella) or oceanic bacteria was detected after treatment of 20 L MPCF and UV radiation at 1.3× 104 μW·s·cm-2. A 20 L ceramic filter can run continuously for 5.3 h at the flow rate of 15 m3·h-1 before its pressure drop up to 0.195 MPa. The removal percentage of total plankton amounts were 91.9% at a flow rate of 70 m3·h-1 by 80 L MPCF and UV radiation at 1.3× 104 μW·s·cm-2. |
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Keywords: | ballast water ceramic filter UV plankton oceanic bacteria |
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