剩余污泥低温加碱与超声波碱耦合溶胞方法的研究

Study on Low-temperature Alkali Adding Lysis at and Ultrasonic-alkali Coupling Lysis for Excess Sludge

摘要: 对低温（30~60 ℃）加碱（pH为10~12）和超声波碱耦合条件下污泥的溶胞情况进行了研究，结果表明：在温度为50 ℃，pH为10条件下，污泥低温加碱溶胞中单位加碱溶出的SCOD_Cr最高。超声波的引入，不仅大大提高了低温加碱的溶胞效果，而且对溶胞过程温度的要求有所降低。对于超声波碱耦合溶胞过程，温度为22℃，pH为10条件下单位加碱溶出的SCOD_Cr最高。

Abstract: Two sludge lysis methods, low temperature (30-60 ℃) alkali adding (pH as 10-12) lysis and ultrasoni-alkali coupling lysis, were studied. The results indicated that the SCOD_Crproduced by unit alkali was the highest under the condition of 50 ℃ and pH 10 for low-temperature alkali adding lysis. The introduction of ultrasonic wave not only greatly improved the effect of lysis, but also decreased the requirements for the temperature during the lysis. For the ultrasonic-alkali coupling lysis, the SCOD_Cr produced by unit alkali was the highest under the condition of 22 ℃ and pH 10.