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Study on Treatment of Chromium-containing Wastewater by Absorption

SUN Ying LI Su-qin(School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing;Key Laboratory of Ecology and Recycle Metallurgy,Ministry of Education Beijing 100083)  
Modified fly ash and steel-slag were investigated to deal with wastewater contained with Cr6+.The results show that the steel-slag has not very good effect on the removal of chromium.The fly ash which is modified with calcium hydroxide at high temperature has very good effect on the remove of Cr6+.The removal effect of Cr6+ is affected by the addition amount of modified fly ash,temperature,shake speed and the initial pH value.It should be considered to dissemination and application of modified fly ash in industry.
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