DEVELOPMENT OF BIO-TREATMENT SYSTEM OF OILY BILGE DRAINED FROM SHIP ENGINE ROOM
The authors aimed to develop a system for treating emulsified oil discharged from ship engine rooms. The efficiency of the targeted system was to reduce the oil content of the drain to 15 ppm or less so that the drain could be discharged into the sea. A biological treatment was developed using a fluidized bed in which the drain and sludge are efficiently mixed by aeration and stirring. A specific sludge with enhanced oil decomposing ability is used in the system. Shipboard tests were performed using a pilot test system, the capacity of the reaction chamber of which is 0.5 m3 and oil volume load, 0.4kg-oil/(m3 d), and future possible applications of the system for ships was confirmed. This would bring a great reduction in the load on existing oil separators, saving its overall maintenance costs.
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Supplemental Notes:
- Mitsubishi Juko Giho, v 32 n 5, 1995, p 330 [4 p, 7 ref, 2 tab, 6 fig]
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Authors:
- Nakamura, H K
- Ogawa, N
- Publication Date: 1995
Language
- Japanese
Subject/Index Terms
- TRT Terms: Bilges; Environmental impacts; Living things
- Uncontrolled Terms: Treatment
- Old TRIS Terms: Biological effects; Oily water
- Subject Areas: Environment; Marine Transportation;
Filing Info
- Accession Number: 00718430
- Record Type: Publication
- Source Agency: British Maritime Technology
- Files: TRIS
- Created Date: Mar 27 1996 12:00AM