| 利用无色硫细菌氧化废水中硫化物的研究 |
| 摘要点击 3047 全文点击 3040 投稿时间：1995-01-26 |
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| 中文关键词 好氧生物脱硫 好氧填料床生物膜反应器 无色硫细菌 成单质硫 |
| 英文关键词 aerobic microbial desulfurizing process upflow aerobic biofilm reactor colourlesssulfur bacteria elemental sulfur |
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| 中文摘要 |
| 本试验直接以硫酸盐还原相出水作为进水,采用升流式好氧生物膜反应器。在室温(18—22℃)条件下,研究了利用好氧无色硫细菌去除水中硫化物的可行性。试验表明,当硫化物容积负荷达到12kg/(m3·d)(以H2S计,下同)。水力停留时间为22min。pH值为7—8、溶解氧浓度为5.0—5.5mg/L时,硫化物的去除率可达90%以上,被去除的硫化物几乎全部转化为单质硫,同时有机物的去除率约为10%。试验结果还表明,反应器内所需的溶解氧浓度和pH值的升高值分别与进水硫化物负荷和硫化物去除负荷里线性关系。 |
| 英文摘要 |
| Studies have been carried out on the possiblity of converting sulfides directly by colourless sulfur bacteria into elemental sulfur in the treatment of effluent from sulfate reducing reactors. The treatment was conducted in an up flow bio film reactor packed with Rasschig rings at an ambienttemperature (18—22℃ ). The results show that sulfides were removed at a rate of over 90% and almost all of sulfides removed were coverted into elemental sulfur while organics being removed ata rate of about 10% only,when the treatment was conducted with a sulfide volumetric loading of 12 kg H2S/(m3·d),a hydraulic retentiontime of 22 minutes and a dissolved oxygen (DO) concentration of 5.0.—5.5 mg/L and at a pH value of 7—8.The results also show that the DO concentration required in the bio film reactor and the increase in PH value were linearly correlated to the sulfide loading in the in fluent and to the amount of sulfides removed,respectively. |
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