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首页> 外文会议>Sixth International in Situ and On-Site Bioremediation Symposium, 6th, Jun 4-7, 2001, San Diego, California >BIODEGRADATION OF A COMPLEX PHENOLIC WASTE- CONTAMINATED GROUNDWATER BY PRESSURIZED FLUIDIZED BED REACTOR
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BIODEGRADATION OF A COMPLEX PHENOLIC WASTE- CONTAMINATED GROUNDWATER BY PRESSURIZED FLUIDIZED BED REACTOR

机译：加压流化床反应器降解复杂的含酚废水。

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摘要

A bench-scale pressurized fluidized bed reactor (PFBR) system was employed to treat a complex phenolic waste contaminated groundwater containing 2,4-dimethylphenol, tricresylphosphate and as many as twenty (20) other volatile and semi-volatile organic contaminants. The experimental system consists of two PFBRs operated in series, a biofilter, and a settling tank. Granular activated carbon was added to serve as the adsorbent/biomass carrier in the PFBRs. Experimental results show that the phenol waste degrading microorganisms could be cultured in the PFBR system under an operating hydraulic retention time (HRT) of 1 hour and an organic loading rate of 2.9 kg COD/m~3-day. The PFBR system could continuously remove organic contaminants with influent concentrations up to 7,000 μg/1 (2,4-dimethylphenol) and 2,500μg/1 (tricresylphosphate) to below the GC's detection limits (<5 μg/1 for 2,4-dimethylphenol and < 40μg/1 for tricresylphosphate, respectively). The PFBR system was able to resist a six fold-three hour shock load and recovered within one and a half hours when normal operating conditions were resumed.
机译：台式压力流化床反应器（PFBR）系统用于处理含2，4-二甲基苯酚，三甲苯三磷酸和多达二十（20）种其他挥发性和半挥发性有机污染物的复杂的含酚废物污染的地下水。实验系统由两个串联操作的PFBR，一个生物滤池和一个沉淀池组成。添加颗粒状活性炭以用作PFBR中的吸附剂/生物质载体。实验结果表明，可在PFBR系统中，在1小时的水力停留时间（HRT）和2.9 kg COD / m〜3天的有机负荷下，在PFBR系统中培养降解苯酚的微生物。 PFBR系统可以连续去除进水浓度高达7,000μg/ 1（2,4-二甲基苯酚）和2,500μg/ 1（三甲苯基磷酸酯）的有机污染物，低于GC的检测极限（2,4-二甲基苯酚的<5μg/ 1和<40μg/ 1分别为磷酸三甲苯酯）。 PFBR系统能够抵抗六分之三小时的冲击载荷，并且在恢复正常运行条件后的一个半小时内即可恢复。

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