Xuejun Tan

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TTC-electron transport system activity and OUR tests were compared for assessing heavy metal inhibition of activated sludge. The median inhibitory concentrations (IC<sub>50</sub>s) of Cu<sup>2+</sup>, Zn<sup>2+</sup>, Cd<sup>2+</sup>, Hg<sup>2+</sup>, Ni<sup>2+</sup>, Pb<sup>2+</sup> and Ag<sup>+</sup> measured via the two tests were similar, which(More)
In order to enhance the efficiency of anaerobic digestion, the effect of alkaline pre-treatment has been studied on waste activated sludge(WAS) from a wastewater treatment plant(WWTP) in Shanghai,China. The results indicated that sodium hydroxide strongly influenced the solubilization of sludge and subsequent anaerobic digestion. The COD and protein(More)
The effect and the application ways of enhanced coagulation using KMnO<sub>4</sub> were tested in this article. It was demonstrated that the addition of KMnO<sub>4</sub> to coagulant (PAC) could enhance the efficiency of coagulation, which helped for reducing clogging of ultrafiltration membrane. KMnO<sub>4</sub> is suitable to be used before PAC addition(More)
The effect of temperature on the hydrolysis and acidification of ultrasonic-pretreated waste activated sludge (WAS) under alkaline conditions was investigated in this study. The experiment temperatures were set at 10, 20, 37, and 55°C. Experimental results showed that the hydrolysis of ultrasonic-pretreated WAS under alkaline conditions increased(More)
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