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Approach to the Influnce of SCN~-on COD Value in Coking Chemical Polluted water

Qiu Jingzhen;Liu Zhuoying;Ding Youyuan College of Chemical Engineering of BUU, 100009  
This paper is on approach to the reaction principle and experiment determination of SCN~- vs. COD interrelation value and analyze for the COD data provided by SCN~- in differ- ent process of biochemical treatment of the polluted water, which is in Beijing Coking Chemical Factory. The paper concludes that SCN~- in the polluted water after two steps of biochemital treatment has been effectivelly reduced, the first step is much more effectively than second and SCN~- can not be absorbed by suspended substanced.
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