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A new process for reduction of waste sludge by ultrasound has been demonstrated. In former studies, ultrasound was mainly used for dehydration of waste sludge. Otherwise, it has been reported that ultrasound could efficiently provide a chance for excess sludge removal in reactor directly. Therefore, ultrasound was suggested to reduce waste sludge in SBR reactor in this paper. The results showed that...
The experiment investigated decoloration rate of the mixed solution under visible light, which was consisted of lixivium and dye solution. The lixivium was got through the process of purifying silica sand by the means of ultrasonic treatment. Meanwhile, the effect of the concentration of ethanedionic acid, time of treatment by ultrasound, the initial concentration of dye solution and the volume of...
This paper reports before and after the low frequency low power ultrasound were treated with different concentrations of algae in Taihu Lake sample water quality changes, and we have found that low frequency and low power ultrasonic can not only safe and efficient removal of algae in Taihu Lake, and the treated water quality improved significantly. After two times of ultrasonic treatment and for 24...
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