超声破解污泥影响因素分析
Effect of characteristics of waste activated sludge and experimental conditions on ultrasonic disintegration
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摘要: 超声破解是促进污泥快速厌氧消化的一项新技术，不仅超声波参数直接影响污泥破解效果，而且污泥性质和辅助条件也影响污泥破解效果。以污泥溶解性化学需氧量增加值(SCOD+)和污泥破解度(DDSCOD）为评价参数，通过超声破解不同性质污泥试验，得出污泥的初始温度、pH值和污泥浓度等参数对污泥破解效果起重要作用。增加搅拌和曝气辅助条件破解污泥的试验，得出间歇搅拌和曝气能增强污泥超声破解效果。Abstract: Ultrasonic disintegration of waste activated sludge is a new technology to accelerate anaerobic digest of waste activated sludge. Not only ultrasonic parameter but also characteristics of waste activated sludge and experimental conditions are important parameters to affect the disintegration of waste activated sludge. In order to assess the effects of characteristics of waste activated sludge and experimental conditions on ultrasonic disintegration of waste activated sludge, experiments with difference characteristics of waste activated sludge are carried out and analyzed with the increase of soluble chemical oxygen demand (SCOD+) and disintegration degree of waste activated sludge (DDSCOD). It is concluded that the parameters of initial temperature, pH and concentration are contributive to disintegrate waste activated sludge. Simultaneously, experiments with stirring or blowing are completed. It is confirmed that intermittently stirring and blowing can enhance waste activated sludge disintegration.
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