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首页> 外文会议>Interantional harbour congress >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：油性码头废水的生物处理和港口溢油

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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：矿物油可以通过镇流器和舱底水的放电，干燥对接活动和油轮以及非油轮事故来溢出到港口中，以污染港口海水。为了防止港口清洁并保持安全运输，必须从港口中从海水中取出溢出的油。此外，还应在排出之前对油性停靠废水进行处理，以防止港口污染。在本研究中，使用颗粒状塑料介质（1.5厘米，六边形）的实验室规模的有氧生物过滤器 - 生物折磨塔系统用于处理被矿物油（柴油）污染的海水，与化学分散剂（吐温系统）和无机营养素。然后通过治疗系统的生物轧制塔处理由曝气的生物过滤器逸出的挥发性有机化合物（VOC）。根据实验结果，发现海水中乳化柴油的最佳去除效率为95％，在1000mg TOC / L柴油中控制的95％，流入的流动性和体积加载速率为1.5 kg TOC / m〜3天。对于假设的一阶反应，测量生物降解速率常数（k）为0.169小时〜（-1）。

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