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首页> 外文会议>12th International Harbour Congress Sep 12-16, 1999 Antwerpen, Belgium >BIOLOGICAL TREATMENT OF THE OILY DOCK WASTEWATER AND SPILLED OIL IN HARBOURS
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BIOLOGICAL TREATMENT OF THE OILY DOCK WASTEWATER AND SPILLED OIL IN HARBOURS

机译：港口油码头污水和溢油的生物处理

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摘要

Mineral oil may be spilled into the harbours through the discharges of ballast and bilge water, dry docking activities and tanker and non-tanker accidents to contaminate the seawater of harbours. In order to keep the harbors clean and maintain safe shipping, the spilled oil must be removed from the seawater in harbours. Besides, the oily dock wastewater should also be treated before being discharged to prevent the harbours from oil pollution. In this study, a lab-scale aerobic biofilter-biotrickling tower system packed with particulate plastic media (1.5 cm, hexagon in shape) was used to treat the seawater polluted by mineral oil (diesel) mixed with chemical dispersant (Tween system) and inorganic nutrients. The volatile organic compounds (VOC's) escaped from the biofilter due to aeration was then treated by the biotrickling tower of the treatment system. According to the experimental results, the optimal removal efficiencies of the emulsified diesel in seawater was found to be 95% controlled under concentrations of 1000 mg TOC/L of diesel in the influent and volumetric loading rate of 1.5 Kg TOC/m~3-day. The biodegradation rate constant (k) was measured to be 0.169 hr~(-1) for a first-order reaction assumed.
机译：矿物油可能会通过压舱水和舱底水的排放，干船坞活动以及油轮和非油轮事故等泄漏到港口，从而污染港口的海水。为了保持港口清洁并保持安全运输，必须将溢油从海港的海水中清除。此外，含油码头废水也应在排放前进行处理，以防止港口受到油类污染。在这项研究中，实验室规模的需氧生物滤池-生物滴滤塔系统装有颗粒状塑料介质（1.5厘米，六边形），用于处理矿物油（柴油）与化学分散剂（吐温系统）和无机污染物混合污染的海水营养。然后，由于曝气而从生物滤池中逸出的挥发性有机化合物（VOC）由处理系统的生物滴滤塔进行处理。根据实验结果，在进水和容积负载率为1.5 Kg TOC / m〜3天的条件下，在1000 mg TOC / L的柴油浓度下，乳化柴油在海水中的最佳去除效率可控制在95％。 。对于假定的一级反应，测得的生物降解速率常数（k）为0.169 hr〜（-1）。

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