Fenton-UASB-生物接触氧化处理Fischer-Tropsch合成废水的研究

Study on Fischer-Tropsch synthesis |waste water treatment by Fenton-UASB-Biological contact oxidation

摘要: 用Fenton-UASB-生物接触氧化组合工艺对Fischer-Tropsch合成废水进行处理。实验结果表明,采用Fenton法对废水进行预处理，在pH值为3，H₂O₂的投加量为30mL/L，Fe²⁺投加量为1.2g/L，反应时间为120min时，去除了63%的COD_Cr，有效地提高了废水的可生化性；Fenton预处理出水经UASB厌氧生物处理后，COD_Cr去除率达90%以上；最后经接触氧化后，出水COD_Cr达100mg/L以下，达到了GB8978-1996《污水综合排放标准》中化工类废水的二级排放标准。

Abstract: The waste water from Fischer-Tropsch synthesis plant was treated by Fenton-UASB-Biological contact oxidation combined process. The results showed that the pretreatment of the waste water by Fenton oxidation can not only eliminate COD_Cr by 63%, but also improve its bio-degradability effectively when the pH was 3, reaction time were 120min and dosage of H₂O₂ and Fe²⁺ was 30mL/L and 1.2g/L respectively; after treatment by UASB anaerobic, the COD_Crremoval rate could reach up to 90%; and finally after contact oxidation, the effluent COD_Crwas below 100mg/L, which can meet the second discharge standard of chemical waste water in GB8978-1996 Integrated Wastewater Discharge Standard.