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http://dx.doi.org/10.5322/JES.2003.12.9.1017

Study on Rapid Removal of Suspended Solid by Modified Magnetite Powder  

이혁희 (한국화학연구원)
박상원 (계명대학교 환경대학)
Publication Information
Journal of Environmental Science International / v.12, no.9, 2003 , pp. 1017-1023 More about this Journal
Abstract
The high speed elimination process of suspended solid was investigated to treat the pulp waste water by using surface modified magnetite particle and magnetic power. The effects of the various aluminum salts such as Al(NO$_3$)$_3$ㆍ9$H_2O$, AlC1$_3$ㆍ6$H_2O$, $Al_2$(SO$_4$)$_3$ㆍ13∼14 on the COD, BOD and suspended solid were systematically studied. It has been found that the 2.0 wt% of Al was most effective for the modification of Fe$_3$O$_4$ powder and then best for the treatment of pulp waste water, Optimum quantity of modified magnetite in this study was 12 wt%, and aging time was found to be 12 hours. Comparing with the conventional process, the required time for SS removal was drastically decreased. BOB and COD were also effectively removed when applied to the pulp wastewater.
Keywords
SS removal; Surface modification; Magnetite;
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