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  • simultaneous 4-chlorophenol and nitrogen removal in moving bed sequencing batch reactors packed with polyurethane foam cubes of various sizes

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 585
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     moving bed sequencing batch reactors (mbsbrs) packed with 8% (v/v) of 8-, 27- and 64-ml polyurethane (pu) foam cubes, respectively, were investigated for simultaneous 4-chlorophenol (4-cp) and nitrogen removal at increasing 4-cp concentration. when the 4-cp concentration exceeded 300 mg l−1, the mbsbr with 27-ml foam cubes was observed to outperform the other mbsbrs in removing 4-cp and nitrogen. the reasons were: (1) there were more biomass in inner layer of the 27-ml cubes, compared to that of the 8-ml cubes, which was more shielded from the inhibitory effect of 4-cp and (2) the 27-ml cubes were more mobile than the 64-ml cubes. although increasing 4-cp concentration to 600 mg l−1 resulted in incomplete removal of 4-cp in the mbsbrs, results of the batch reactor with 27-ml foam cubes showed that complete 4-cp removal within the react period could be achieved by increasing the packing volume to 20%.

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