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Solidification of Sludge with Arsenic Using Fly Ash

ZHAO Meng1, LI Jie2, WANG Ping-yan1 (1.Department of Municipal Engineering, School of Civil Engineering, Kunming University of Science and Technology, Kunming 650224; 2.Henan Environment Protection Academy, Zhengzhou 450004)  
Solidification of sludge in sulphuric acid wastewater treatment system with fly ash and cement was studied. The affecting factors including time, additives, proportion of materials, caring condition and pH were analyzed. Comparing with cement solidification, fly ash solidification was much more economical.
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