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超臨界氧化技術處理吐氏酸生產廢水

Treatment of wastewater from Tobias acid production with supercritical water oxidation

  • 摘要: 為更好地處理難降解的高濃度有機廢水,研究了在間歇式超臨界水反應裝置內,超臨界水氧化技術處理吐氏酸生產廢水的最佳條件及其處理效果.通過單因素試驗和正交試驗,系統地研究了不同條件下廢水COD和色度的去除率.當溫度為380℃、壓力為24 MPa、時間為150 s以及過氧比為1.8倍時,COD去除率可達96.7%,色度去除率可達97.5%,且反應后廢水的可生化性有極大改善.

     

    Abstract: In order to better treat high-concentration refractory organic wastewater, the optimum conditions and treatment effect for treating wastewater from Tobias acid production were studied in a batch-type supercritical water oxidation (SCWO) device by SCWO technology. Through single factor and orthogonal tests, the removal rates of COD and chrominance were investigated under different experimental conditions. When the temperature is 380℃, the pressure is 24 MPa, the residence time is 150 s and the excess oxygen rate is 1. 8, the removal rates of COD and chrominance reaches 96. 7% and 97. 5%, respectively, and the biodegradability of the wastewater is improved greatly.

     

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